2008 IDBL rules (FINAL)

shameer · Posted: Wed Apr 16, 2008 9:10 pm Post subject: 2008 IDBL rules (FINAL)

hey guys just received the final copy of the new 2008 rules.........please copy, print and distribute to your fellow competitors.........it would be deeply appreciated......

IdBL - 1
Section 7
IdBL
Rules
THE ULTIMATE SPL CHALLENGE
IdBL - 2
The IASCA dB League (IdBL) is a contest of measurement of the
maximum sound pressure level (SPL) that can be generated from an
automotive sound system. It has no bearing on the perceived sonic
qualities of acoustically accurate music and sound reproduction,
moreover, it is a challenge of scientific proportion.
The IdBL competition format classifies competitors by three main criteria;
first is the amount of square inches of subwoofer cone area, second is by
the level of modifications to the vehicle and third is by the amount of
equipment in the vehicle. Variations of these main factors classify
competitors into 6 different Divisions, 5 of which contain 3 Classes based
on the amount of square inches of subwoofer cone area.
Once classified, competitors compete against all others in their cone area
Class to achieve the highest possible SPL score. The competitor with the
highest score in their Class at the end of the event is the winner of that
Class. Typically, most events allow competitors two chances at achieving
their highest SPL score, giving them the opportunity to better themselves
and have a chance at winning.
You may be asking yourself “Why classify competitors by square
inches of subwoofer cone area?”. Well, the answer is simple; because
there are so many different types, shapes and sizes of subwoofers available
on the market today, this format allows a competitor to compete against
another with approximately the same “amount” of subwoofer cone area.
Oftentimes you’ll hear of a competitor running two ten inch subwoofers
competing against someone who has two fifteen inch subwoofers; hardly
an even match. By using the square inches of subwoofer cone area
formula, a competitor with two ten inch subwoofers would compete
against another competitor who may be running either two ten inch subs
themselves, or three eight inch subs, or one twelve inch sub; not someone
with two fifteen inch subs. Someone with two fifteen inch subs would
compete against someone with three twelve inch subs, or four ten inch
subs, because they have approximately the same “amount” of cone area.
The next question usually is “Why rate by subwoofers at all? Why
don’t you rate by the amount of power?” And that is a valid question…
here’s why: policing the actual rated power of an amplifier has long been
the unsolved riddle of autosound competition. Amplifier power ratings can
vary greatly, depending on what voltage and impedance they are rated at.
THE IdBL COMPETITION FORMAT
IdBL - 3
Using a set voltage or impedance rating to determine amplifier power
opens up the possibility to rate an amplifier at a lower power rating;
decreasing the impedance of, and increasing the voltage to, that amplifier
allows the amplifier to deliver much more power than it is rated for. This
creates a situation where ratings are now not what they seem and is not an
accurate formula to offer fairness to all competitors.
Now, let’s look at the physics of a loudspeaker; in essence, speakers and
subwoofers are, in varying degrees, power limited. Too much power to a
subwoofer and BOOM, you just blew a sub. Typically, the larger a
subwoofer is, the larger a motor structure it has and it will typically handle
more power. So, the larger (or more) subwoofer cone area you have, the
more power you can add.
By using this classification method, competition and winning comes down
to creativity in subwoofer cabinet design and construction, as well as
proper use of your audio equipment. It no longer comes down to
“Whoever can throw the most money into their equipment and system
wins”. In IdBL competition, the benchmark for winning is ingenuity in
design and equipment use, not how much money you have.
Another popular question is “So how do I calculate how much
subwoofer cone area I have in my system?” There are different methods
for calculating cone area, depending on the shape of the subwoofer. For
round subwoofers, the formula for calculating cone area is Radius
squared times Pi (3.14). Example: Take a ten inch round subwoofer; the
radius of all subwoofers is half the diameter, so the radius of a ten inch
subwoofer would be 5 inches; the radius squared would be 5 times 5
which equals 25. 25 times Pi (3.14) equals 78.5. And there you have it; the
total cone area of a ten inch subwoofer is 78.5 square inches. It’s even
easier for square subwoofers; simply multiply two connecting sides of a
subwoofer together (e.g. square 12 inch woofer—12 times 12 equals 144
square inches) and that’s it. There’s a cone area calculation chart for round
subwoofers at the end of this section for quick easy reference. Once you
know the amount of square inches of subwoofer cone area you have for
each size of sub you have, simply multiply that amount by the amount of
subwoofers you have in your vehicle and you’ll get the total cone area for
your vehicle.
Once you’ve calculated the total subwoofer cone area of your sound
system, refer to the vehicle criteria for each IdBL Division to determine
what Division you will be able to compete in. And that’s it! You’re on
your way to competing in IASCA IdBL competition!
Competing in IdBL competition is designed to be fair and fun. We
designed it that way for you, the competitor, so go out and have a great
time at an IdBL competition today!
IdBL - 4
• Competitors in any Division or Class, during SPL testing, who must
operate their sound system from inside the vehicle, must wear
approved hearing protection. IASCA always recommends operating
an SPL competition system from outside of the vehicle in every
situation. However, contestants who choose to operate from inside the
vehicle will do so at their own risk, accord and responsibility. If the
vehicle’s system is capable of exceeding 150 dB, IASCA requires the
use of external control/s such as a remote control or similar device
allowing the operation of the competing sound system from outside of
the vehicle. Failure or refusal to do so subjects the competitor to
disqualification without recourse. IASCA will not permit any
competitor to be inside of a vehicle that could register over 150db
with or without hearing protection.
• The frequency cap for IdBL competition is set at 100 Hz. Official
IASCA AC-3056 AudioControl meters have filters built in to the unit
to eliminate frequencies over 100 Hz during testing. This policy is in
place to create a fair and consistent playing field for all.
• The sound system in the vehicle must be powered by the vehicle’s
charging system and batteries only. External power supplies, trailers,
or chargers may not be attached to the vehicle during testing. The use
of these items is allowed prior to testing but must be disconnected
before entering the competition lane.
• There are specific power input voltage limitations per Division; please
refer to the individual Division rules for specific voltage limitations.
During testing, IASCA Certified IdBL judges may elect to connect a
voltmeter to the vehicle’s electrical system to ensure compliance with
this rule. It is the competitor’s responsibility to ensure that easy access
is available to power connections so that judges can connect the
voltmeter safely and in a timely fashion. Failure to allow judges to
connect a voltmeter to the vehicle’s electrical system during testing
could result in disqualification from the competition.
• The program material used in testing must be commercially available
CD software (e.g. - store bought CDs). CD-R’s, CD-RW’s, MP3’s,
iPods, etc. are not allowed for use in competition. Any other
reproduction format that is not listed is subject to the approval of the
event Head Judge. Any commercially available CD is acceptable at
SPE and DPE events, unless the event is sanctioned as an IdBL World
Record Event. For TKE and IdBL World Record Events, the Official
IASCA IdBL “Max dB2” CD is the only acceptable CD for use.
• Vehicles with cracked or broken windshields will be allowed to
compete in IdBL events if the cracks are covered with a protective
material (e.g. duct tape) to eliminate any chances of the glass breaking
out of its mounting.
IdBL GENERAL POLICIES AND PROCEDURES
IdBL - 5
• The use of compressed air, explosive devices or gases etc. is not
allowed.
• Engine RPM while testing - The vehicle’s engine rpm cannot exceed
2,000 rpm during testing. For vehicles that do not have a tachometer,
competitors will be at the discretion of the event judges to determine
if the vehicle’s engine rpm exceeds 2,000. This is to ensure the safety
of all who are participating and/or spectating during the testing.
• If the vehicle is running during testing, the parking brake must be set.
If the parking brake cannot be set, the competitor must use wheel
chocks under the vehicle’s tires to ensure the safety of everyone
around the vehicle, or shut the vehicle off during testing.
• Driver and passenger doors must have a flexible gasket seal between
the door and doorjambs to provide a safe routing of the measuring
device cable, protecting it from being cut or pinched. In certain cases,
alternative protection devices will be allowed at the Head judge’s
discretion. In all cases, the measuring device cable provided by the
IdBL judge must not pass through any connection devices that are
mounted in or on the vehicle. The connection of the measuring device
to the meter must only be done with the measuring device cable
supplied by the judge and the same devices must be used to measure
all the vehicles competing.
• Competitors may have as many additional people as they require to
prepare the vehicle for competition. However, a maximum of six (6)
additional people are allowed to hold down the vehicle during testing.
These additional people must have both feet on the ground at all times
during testing and cannot block the view between the competitor and
the meter judge. Having a person or additional persons sitting on top
of, or inside, the vehicle during testing is not allowed.
• The only person allowed to be sitting inside the vehicle during testing
is the competitor or their assigned co-pilot; whoever is designated to
operate the system during testing. Only one person is allowed to be
inside the vehicle during testing, no exceptions.
• Barriers or partitions between driver and passenger compartments are
not allowed. No modification designed to divide the passenger
compartment from the driver’s compartment above the top of the
vehicle’s dashboard (Ultimate Division) and/or console (All other
Divisions) is acceptable.
• The equipment reproducing the program material must be
commercially available through standard retail channels. This
includes, but is not limited to, amplifiers, speakers/subwoofers, CD
head units and processors. If a piece of equipment is in question, it
will be at the discretion of the event Head Judge to allow its use or
not. Modifications to equipment are allowed in certain Divisions;
IdBL GENERAL POLICIES AND PROCEDURES
IdBL - 6
refer to the criteria for each Division to establish what is allowed.
• No powered transducers (speakers), vents, ports, walls or any
other part of the sound system may be located within 25 inches of
the measuring device during testing. In the case of Ultimate Division
vehicles that have a wall, it may pass forward of the “B” pillar of the
vehicle, so long as it allows for seating (fetal position is acceptable) of
two average sized adults (5’9”, 180 lbs.) and still maintains a
distance of 25 inches from the measuring device. This distance is
measured from the point on the wall that protrudes the furthest
(including speakers, surrounds, supports and braces).
• A competitor may not add speakers to, or remove speakers from, a
system in a vehicle competing during the course of a competition, so
as to enable competition in another class. Once a competitor has
registered for a competition, the Division and Class they have
specified on the score sheet is the Division and Class they will
compete in unless, upon inspection by IASCA officials, the
competition vehicle is found not to be within the guidelines set out for
the Division or Class they are registered for. In this case, the judge/s
will reclassify the vehicle for competition.
• Competitors in all Divisions and Classes may use specific items to
cover or tie down external components on the outside of the vehicle,
in order to reduce those components from rattling (e.g. roof racks,
license plates, rear spoilers, etc...). Items that may be used to reduce
rattling are: blankets, sound deadening, bungee cords, rope and
similar items. Items that cannot be used are such items that weigh an
excessive amount that could potentially increase SPL, such as cement
blocks, filled water bottles, batteries, wood boxes and the like.
• Competitors in all Divisions and Classes except the Ultimate Division
are not allowed to add additional items to the interior of the vehicle in
order to decrease cabin volume for the purpose of increasing SPL.
Any items in the interior of the vehicle (in all Classes, no exceptions)
must be solidly attached to the inside of the vehicle and designed to
remain in the vehicle, while competing or not. Therefore, items
similar to those listed in the rule above, such as cement blocks,
wooden boxes, water jugs and the like cannot be placed in the vehicle
prior to competing or while in the judging lanes. If any these items are
built in to the installation of the system and have been mounted
solidly, they will deemed acceptable only after inspection from the
Head judge. Additionally, competitors are not allowed to have
additional people sitting in the vehicle during testing in the lanes. The
only person allowed in the vehicle during testing in the lane is the
person operating the system (the competitor or their assigned
co-pilot).
IdBL GENERAL POLICIES AND PROCEDURES
IdBL - 7
• All panels of the vehicle (hood, doors, trunk/hatch, sunroof, windows,
tonneau covers, truck caps, etc..) must be closed during testing for the
duration of the SPL run (30 seconds). At no time during the SPL run
can any panel be opened until the SPL run is complete. Failure to
comply with this rule may result in disqualification.
Exception: Certain vehicles that have their source units mounted in or
behind panels, so as to allow operation of the system from outside the
vehicle. In these situations, the competitor must advise the Head
Judge prior to competing and present the vehicle for inspection to the
Head judge. So long as the panel in question, in it's open (or
operational) position, does not allow airflow to the inside (or venting
to the outside) of the vehicle during testing and the competitor can
prove this, the judge may approve the vehicle for competition.
• The Head Judge has the right to require any competitor to tear down
their vehicle and/or system for the purpose of rules compliance.
Refusal to do so may result in disqualification form the event.
BREAKDOWNS - As unfortunate as they are, breakdowns do
happen. We at IASCA understand this and want to offer the
competitor as much opportunity as possible to rectify the situation.
That is why we have developed a policy for this contingency.
In the event a competitor experiences a breakdown while in the
lane prior to being tested, they will be directed to remove their
vehicle from the lane and will be allowed ten minutes to repair the
problem. If the competitor repairs the problem in the time allotted,
they will be allowed to compete without penalty. However, if the
competitor cannot repair the problem within the time allotted, they
will forfeit that run and receive a score of zero. They have until they
are called up for their final run to repair the problem and bring their
vehicle into the judging lane. In this case, they will only be allowed to
run once (their final run) and will have to stand with the score they
post.
If a competitor experiences a breakdown prior to entering the
competition lane, it is the competitor’s responsibility to notify the
IdBL Head Judge of a breakdown if additional time is needed to repair
the breakdown. The competitor must notify the IdBL Head Judge
early enough to allow sufficient time for the Head Judge to make
alternate arrangements while waiting for the competitor to repair the
breakdown. However, if the repair cannot be completed within the
regular time frame of the event, the competitor will receive a score of
zero for their run/s.
IdBL GENERAL POLICIES AND PROCEDURES
IdBL - 8
TIEBREAKERS
A tie score is determined by two competitors achieving the same score
after two (2) runs. Example: Competitor A scores 149.9 dB in their first
run and 150.0 dB in their second run. Competitor B scores 150.0 dB in
their first run and 149.7 dB in their second run. Both competitors
achieved a high score of 150.0 dB after their two runs and are therefore
tied. Once all regulation runs are completed, the competitors that are tied
will return to the judging lane for a third “tiebreaker” run. Both
competitors will then be judged and the competitor with the highest score
in the tiebreaker run will be declared the winner in the tiebreaker and be
awarded the higher position in the standings, regardless of the previous
scores. If the tie is not broken after two tiebreaker runs, IASCA will
award duplicate placing for the tied competitors. The results of a
tiebreaker can only affect the positions below the tied competitors.
Example: If the tie is for second place, only the second and lower
positions can change, even if one or more of the tiebreaker scores are
higher than the first place score. If one of the tied competitors fails to
appear for their tiebreaker run/s, they forfeit the position they are
competing for.
EVENTS
NOTE: The average IdBL event usually offers two runs, however it is up
to the discretion of the event host. Due to the high volume of competitors
at some events, some event hosts may only have time to offer one run;
please check with the event host before going to an event to verify how
many IdBL runs they will be offering.
IdBL GENERAL POLICIES AND PROCEDURES (cont.)
IdBL - 9
CHANGING/MOVING DIVISIONS AND/OR CLASSES
Competitors who wish to change the Division or Class they compete
in must request this change in writing to the IASCA office either by mail,
fax or email for approval.
An IdBL competitor may move up or down in Division or Class one
time during the competition season and maintain the points they have
accrued, as long as they accrue a minimum of 50% of their points in
their new Division/Class during the season. Once the competitor
moves to the new Division/Class, they can no longer accrue any points in
the old Division or Class that they used to compete in.
An Advanced or Ultimate Division competitor who no longer works
within the industry cannot move down to the Stock Division within the
same season; however, they can move down to the Stock Pro Division so
long as their vehicle meets the criteria set forth for that Division.
If a competitor is found to be alternating between Divisions or
Classes through the competition season in order to gain points, that
competitor will forfeit all points accrued in any Division or Class and have
their invitation to compete at the Finals revoked for that season.
Competitor Division and Class specifics
• Competitors with one vehicle are only allowed to compete in one
class at any event.
• Competitors who compete with more than one vehicle may do so, but
they must hold an individual membership card for each vehicle
competing.
• Competitors can only compete in the Division and cone area Class
they fit into. Example: A Stock Division competitor with two ten
inch subwoofers must compete in the Stock 1 Class; they cannot
compete in any other Division or Class within the same event or at
other events, unless prior approved by the IASCA Head Office.
IASCA Affiliate country offices may approve a competitor’s request
for a class change within their country (or area of responsibility), but
must notify the IASCA Head Office of the change.
IdBL GENERAL POLICIES AND PROCEDURES (cont.)
Notes:
IdBL - 10
IN THE COMPETITION LANE
• The competitor has three (3) minutes from the time the
measuring device is positioned in the vehicle to prepare their vehicle
for competition. If a competitor is not prepared and ready to compete
within that 3 minute time frame, they will receive a score of zero (0)
for that run.
• Once the competitor is ready to compete, they must notify the
Head Judge that they are ready by either verbal communication (if
outside the vehicle), a “thumbs up” sign or honking the horn,
signifying that they are ready.
• Once the competitor notifies the Head Judge that they are ready,
the Head Judge will begin the countdown and signal the competitor
by raising their hand in the air with all five fingers extended. A “5-4-3
-2-1, fingers to fist” countdown will indicate to the competitor that the
countdown has begun. When the Head Judge points at the competitor
after the countdown, this indicates that the 30 second timer has
started; the competitor then has 30 seconds from that time in which to
achieve their highest SPL score. At the 10 seconds left mark, the Head
Judge will lift their arm half way with a closed fist; at the 5 seconds
left mark, the Head Judge will extend his fingers from the fist and
begin a “5-4-3-2-1 fingers to fist” countdown, indicating the last 5
seconds of the run. Once the run is complete, the Head Judge will do a
sweeping, flat hand gesture and a “thumbs up” to indicate the run is
over and official. If the Head Judge uses a flat hand sweeping gesture
but does not give a “thumbs up” at any time during the run, this will
indicate to the competitor that the run is over and that there is an issue
that has to be dealt with. The Head Judge will then confer with the
other judges and the competitor in regards to the potential issue.
• It is the competitor’s responsibility to ensure that they have a
clear view of the Head Judge, while in the competition lane. They
are responsible to ensure that nothing interferes with their view of the
Head Judge before, during, and after the run; this includes team
members, manufacturer representatives, press, podiums, equipment,
the vehicle or any part of the vehicle (doors, panels, etc.).
• During the competition run, all panels in or on the vehicle must be,
and remain, securely closed and latched for the duration of the run.
The Inspection Judge will complete a final “walk around” of the
vehicle to confirm that all panels are securely latched and closed. If at
anytime during the 30 seconds of the competition run a vehicle’s
panel comes loose, opens or is opened, the run will be disallowed and
the competitor will receive a score of zero for that run, no exceptions.
IdBL COMPETITION PROCEDURES
IdBL - 11
• Once the run is complete, the competitor has three (3) minutes to
remove the vehicle from the competition lane from the time the
measuring device is removed from the vehicle. If the competitor’s
vehicle is not moving out of the competition lane within that 3 minute
time frame, the run may be disallowed and they could receive a score
of zero (0) for the run.
IdBL WORLD RECORD PROCDURES
IdBL records are reset on January 1st of each year. All standard
procedures apply for an IdBL World Record Event as they do in regular
event competition, however there are a few additions to the procedures.
IASCA/IdBL World Records are achieved by exceeding the highest
recorded IdBL World Record score in their class as of that date, twice
consecutively during regulation runs at a sanctioned IdBL World Record
Event. The lower of the two Record breaking scores will be considered the
new official IdBL World Record. Records can only be set at events where
an IASCA Certified world record official is present. The "two run" system
is in place to validate the capabilities of the competitor, their vehicle &
system, and to confirm that the first run wasn’t just a “fluke”.
Upon breaking the record in the first run, the competitor’s vehicle will be
moved aside and inspected by IASCA officials, to confirm that it meets
with all rules and regulations in the competitor’s Division/Class. Prior to
inspection, no one can touch the vehicle, except IASCA officials. Once
the inspection is complete, the officials will validate the vehicle and notify
the competitor. The competitor has until they are called up for their next
run to prepare the vehicle for the second run (charge batteries, etc…). If
the competitor “backs up” their first run with a second score higher than
the current IdBL World Record, IASCA officials as previously described
will reinspect the vehicle. Once the inspection is complete and everything
is in order, the record will be official and will be recorded as such.
NOTE: World Record attempts can only be recorded on an approved
Official IASCA AC-3056 meter with the AudioControl SPL-190 sensor.
An IASCA Certified World Record Judge must be present during the run
to officiate and all rules and procedures must be strictly adhered to. Any
violation of any IdBL rule, regulation, policy or procedure will result in
disqualification of the record.
PROCEDURES FOR A SHOW HOST/PROMOTER
• An IASCA Event Sanctioning Form for an IdBL World Record Event
must be completed by the Show Host/Promoter and sent to head office a
minimum of 30 days prior to the event. The IdBL World Record event
and regular event sanctioning fees must be paid in full upon application.
IdBL COMPETITION PROCEDURES (cont.)
IdBL - 12
• An IASCA/IdBL Certified World Record Judge must be hired to
officiate any IdBL World Record Event. The Certified World Record
Judge will supply the meter to be used for the World Record attempts.
Each Certified World Record Judge owns an IASCA approved
AudioControl AC-3056 SPL meter with an SPL-190 sensor, which is
registered to them. These meters are the only meters approved to certify
IdBL World Records.
• During registration, each competitor attempting to match or break an
IdBL World Record must complete an Official IdBL score sheet and sign
it. Without this sheet, the score is not valid. All required information on
the score sheet must be filled in and the score sheet must be signed by
the competitor, most importantly with their name and membership
number. The white copy of the score sheet must be sent in to the IASCA
head office for our records within 14 days of the event taking place.
• If an IdBL World Record is broken, a copy of the IdBL World Record
Verification Form must be completed and sent in to the IASCA head
office along with the score sheet, or ahead of time by electronic format
(email only). It is the responsibility of the Head Judge (IdBL World
Record Certified Judge) to fill out this form and forward it to the IASCA
Worldwide Inc. head office. It is the Show Host/Promoter’s responsibility
to send in the white copy of the competitor’s score sheet for confirmation.
These forms must be sent in to the IASCA head office within 14 days of
the event taking place. If the score sheets and results are not received
within that time frame, the score will not be recognized.
All IASCA IdBL World Record Event Hosts and Affiliates must verify
the competitor’s full name, address, competitor’s membership number,
vehicle and equipment information on the score sheet and World
Record Verification Form and that the forms are sent to the IASCA
Worldwide Inc. Head Office. These sheets must also include the name of
the IdBL World Record Certified Judge and their judge’s number. If this
information is not included, the competitor’s score will not be recognized
as a World Record.
Procedures for Judges (Judging procedure)
Judging Team – The IdBL Judging Team will consist of a
minimum of 2 (two) judges; the World Record Certified Judge (Head
Judge) who will be in charge of operating the AudioControl meter and an
Inspection Judge, who will be in charge of positioning the sensor and
visually inspecting the sensor, the vehicle and the competitor during the 30
second run. Additional judges are allowed; they may take over some of the
duties of the Inspection Judge as approved by the Head Judge, but are not
IdBL COMPETITION PROCEDURES (cont.)
IdBL - 13
necessary to validate an IdBL World Record attempt.
• Time Frame to achieve a World Record – In order for an IdBL
World Record to be official, a competitor must achieve the World Record
score twice during regulation runs within the show hours set for the event.
• IdBL World Records must be set during regulation runs (the allowed
number of runs for that event); in the case of an event that allows only one
run, or in the case of two day events that allow one run per day, one (1)
additional run may be approved for the purpose of attempting the World
Record, no more.
• If an IdBL World Record is broken, the three (3) minute time frame
for teardown may be extended to allow the competitor time for photo
opportunities or other celebratory items. The time extension is at the
discretion of the IdBL Certified World Record Judge or the event Head
Judge.
• Breakdowns for competitors attempting an IdBL World
Record– In the case of a breakdown, it is the competitor’s responsibility
to notify the IdBL Head Judge immediately of the breakdown, especially
if additional time is required to repair the breakdown. If the repairs cannot
be completed during the regulation specified time frame , the competitor
can request an extension of the time frame from the IdBL Head Judge only
and they may grant the extension based on the situation. The maximum
extension an IdBL Head Judge can grant will be fifteen (15) minutes, no
exceptions. If the repairs cannot be completed within that extension, the
competitor will not be allowed to complete that run and will receive a
score of zero (0) for that run.
•Competitors and their vehicles must comply with all the rules and
regulations set forth in the IASCA/IdBL rulebook. Any infraction of the
rules will automatically rescind any IdBL World Record set. If an
infraction is discovered after the event at any time, the competitor’s score
(and World Record) will be revoked. It is the competitor’s responsibility
to ensure that their score sheet is signed and all pertinent information has
been recorded. A copy of the Official IdBL score sheet is available to the
competitor and it is the responsibility of the competitor to secure a copy of
that score sheet for their records.
IdBL COMPETITION PROCEDURES (cont.)
Notes:
IdBL - 14
MEASUREMENT EQUIPMENT
The official meter for use at IASCA sanctioned competitions is the
IASCA AC-3056 with the AudioControl SPL-190 sensor. It is the only
meter that can be used at TKE events (Territorial Key or Triple Point
Events) and the only meter and sensor combination allowed to record
IdBL World Record attempts when the event is officiated by an authorized
IASCA IdBL World Record Judge. Other AudioControl RTA/SPL Meters
are permissible at single point (SPE) and Double Point (DPE) events.
Other brands of SPL meter systems can be used at SPE events if
authorized by the IASCA Head Office in South Daytona, Florida.
SENSOR / MICROPHONE PLACEMENT GUIDELINES
The event judge/s must ensure that the measuring device height and
orientation are absolutely consistent from vehicle to vehicle. The
measuring device must face towards the front of the vehicle at all times.
The position is as follows for all measuring devices used in IdBL
competition; 4 inches up from the top of the dashboard and 12 inches over
from the OEM passenger side "A" pillar.
This is accomplished by using the IASCA certified placement jig (see
diagram above). For the SPL-190 sensor, the jig must be positioned
against the windshield with the base of the jig (A) touching the top of the
dashboard and the far right of the jig (B) touching the passenger side “A”
pillar. The sensor is then positioned in the top left opening (C), placing the
opening of the sensor in the "4 and 12" position. The cable attached to the
sensor must be at the bottom of the sensor when in its final position, not to
one side or on top.
A
B C
IdBL MEASUREMENT PROCEDURE
IdBL - 15
Once the measuring device is positioned, the competitor will have the
opportunity to verify it has been positioned properly. The competitor is not
allowed to touch the measuring device once it is positioned, however if
they feel it is not properly placed, they can request that it be repositioned
and the judge is required to do so. Note: If the competitor requests that the
measuring device be repositioned, this does not give the competitor an
extension on the 3 minute preparation time set out before being judged.
Once the measuring device has been positioned for the first time in the
run, the 3 minute countdown will begin.
If the judging staff experiences an equipment failure (with either the
meter, measuring device or cable) during the competitor’s run, the score
in that run will not count and the competitor will have the option of
rerunning within a specified time period.
IdBL Divisions and Classes are designed to give all competitors, from
newcomers to local competitors to seasoned veterans, a “place to play”.
Notes:
IdBL - 16
IdBL Divisions classify competitors by their experience and the level of
modifications to their vehicles, while the Classes within the Divisions
ensure that competitors are pitted against others with a similar amount of
subwoofer cone area. Each Division section describes competitor, vehicle
and equipment criteria, plus rules specific to that Division. The following
chart lists all IdBL Divisions and Classes:
DIVISIONS
AND
CLASSES
ROOKIE DIVISION
Rookie 1 Class - 1 to 160 sq. in.
Rookie 2 Class - 161 to 260 sq. in.
Rookie 3 Class - 261+ sq. in.
STOCK DIVISION
Stock 1 Class - 1 to 260 sq. in.
Stock 2 Class - 261+ sq. in.
STOCK PRO DIVISION
Stock Pro 1 Class - 1 to 260 sq. in.
Stock Pro 2 Class - 261+ sq. in.
ADVANCED NO WALL DIVISION
Advanced No Wall 1 - 1 to 260 sq. in.
Advanced No Wall 2 - 261+ sq. in.
ADVANCED DIVISION
Advanced 1 Class - 1 to 520 sq. in
Advanced 2 Class - 521+ sq. in.
ULTIMATE DIVISION
Ultimate 1 Class - 1 to 520 sq. in.
Ultimate 2 Class - 521+ sq. in.
IdBL - 17
The intent of the Rookie Division is to give newcomers and local
competitors a place to compete without the worry of having seasoned
IdBL veterans coming in and taking all the “top spots”. It allows
newcomers and local competitors to compete in IASCA IdBL competition
and learn what IdBL is all about.
Veteran competitors are encouraged to assist Rookie competitors in
increasing their knowledge of SPL competition.
• Competitors are allowed to compete in the Rookie Division for one
year only; after one year, competitors must move up to one of the
higher IdBL Divisions. Competitors may petition IASCA to extend
their Rookie term if they have competed at 3 shows or less in their
first season. IASCA reserves the right to approve or deny the petition.
• Competitors can not have received any schooling or accredited
education in the mobile electronics industry (e.g. car audio installation
schools) at any time prior to or during their Rookie year.
• Competitors cannot derive any income or support from any facet of
the mobile electronics industry or any of its affiliations during their
Rookie year; including, but not limited to the sales, installation,
manufacturing, design, testing or engineering of autosound products.
• Competitors cannot derive any income or support from the publishers
of any mobile electronics magazine during their Rookie year,
including but not limited to print and internet publications.
• Competitors cannot derive any income or support from the
participation in or arranging of autosound and/or similar style
competitions, sanctioned or unsanctioned during their Rookie year.
• Competitors operating their sound system from inside the vehicle
while competing must operate the system from the standard driver’s
seat seating position. Competitors must be seated as if they were
driving the vehicle; no other seating position is acceptable.
• Competitors are allowed to have up to six (6) “co-pilots” assisting
them while competing in the competition lanes. If the co-pilots are
assisting by holding down panels on the vehicle, the co-pilots must
have both feet on the ground at all times during testing. Co-pilots are
not allowed to jump up on the trunk, hood or roof of the vehicle while
it is being tested.
• Competitors must completely fill out and sign their Official IdBL
score sheet. Failure to do so will result in the loss of any accrued
IASCA CAP points from the event, no exceptions.
• Competitors can not have been a member of IASCA or any other
autosound competition organization prior to becoming a Rookie
member of IASCA.
IdBL ROOKIE DIVISION
ROOKIE DIVISION - COMPETITOR CRITERIA
IdBL - 18
1. All vehicles in the IdBL Rookie Division must remain OEM stock.
External and internal aftermarket add-ons such as body kits, wings,
wheels, aftermarket seats, steering wheels or any automotive related
cosmetic and performance items not related to the vehicle’s 12 volt
electrical system are allowed.
2. Vehicles must be driven to the event under their own power and not
towed or trailered in. Vehicles must also be able to be driven in to the
competition lane under its own power.
3. All OEM panels and components in the vehicle must remain in their
factory mounted location (e.g. rear deck trim panels, door panels,
headliners, dashboards, seats, seat belts, etc.). Exception: panels that
are designed to be removable, such as the parcel shelf panel in some
hatchbacks, can be removed. The general rule of thumb is if the
vehicle manufacturer designed the item to be removable, it can be
removed; if the item is designed to be fixed in place, it may not be
removed. Any issues regarding the intent of the manufacturer with an
item will be decided by event officials and their decision will be final.
4. All OEM factory windows in the vehicle designed by the
manufacturer to be operational, must be able to function as the
manufacturer intended them to and nothing can impede their proper
operation. OEM glass may not be replaced with any transparent
substitute material.
5. No panels or sheet metal in the vehicle can be modified so as to
increase the SPL level of the vehicle. All sheet metal, steel, plastic,
wood and any other materials used by the manufacturer to build the
vehicle must remain intact and unaltered, with the following
exceptions; door panel build outs and kick pods built to house
operational speakers the purpose of increasing sound quality only
and/or panel modifications for cosmetic purposes will be allowed.
Build outs designed for the purpose of increasing SPL will not be
allowed. It is at the discretion of the IASCA event official/s to
determine the intent of the build outs; their decision will be final.
6. Competitors are not allowed to have any panels, covers or tinting
blocking the view to the inside of the vehicle during testing. Window
tinting is acceptable, so long as it does not impede the judge’s view of
any component of the measuring equipment during testing. If any
panel, covering or tinting is deemed to block the view of the
measuring equipment and/or is unacceptable by an IASCA Certified
Judge during an event, the competitor will be asked to remove the
item/s so as to not impede the view to the interior of the vehicle.
Refusal to do so may result in disqualification from the event.
7. OEM covering in the trunk or hatch area (e.g. carpet, panels, etc.)
must remain intact and unaltered in the vehicle during testing.
8. Any modification to a vehicle that is not covered in this section will
be considered illegal in Rookie competition and must be approved by
ROOKIE DIVISION - VEHICLE CRITERIA
IdBL - 19
the IASCA Head Office before being allowed in competition.
9. Vehicles that are not allowed to compete in Rookie Division include,
but are not limited to; limousines, conversion vans, ambulances,
buses, delivery trucks and/or vans (cube vans), motorhomes, armored
cars and/or any other vehicle that has been built or modified by
someone other than an automobile manufacturer. If there is a question
as to the legality of a vehicle in Rookie competition, the decision will
fall to the IASCA Head Office and that decision will be final. If a
vehicle in question attends an event to participate, the event officials
are instructed to allow the vehicle to compete and after the event, send
the information to the IASCA Head Office to be reviewed for the
decision. If the vehicle is found to be illegal for competition in the
Rookie Division, it will be reclassified and the competitor, officials
and event host will be notified immediately. Vehicle and competitor
positioning and CAP points will be adjusted for that event.
Notes:
ROOKIE DIVISION - VEHICLE CRITERIA (cont.)
IdBL - 20
All equipment used in the Rookie Division must be commercially
available through standard retail channels (retailer, box store, etc.).
Equipment used can not be modified in any way.
SOFTWARE
• Competitors must play music only from an approved
commercially available CD. CD-R’s, CD-RW’s, MP3’s, etc. are not
allowed in competition whatsoever.
• Competition CDs with test tones or sine sweeps are not allowed in
Rookie Division competition.
SOURCE UNITS
• Only CD source (head) units are acceptable for IdBL competition.
iPods, DAT, mini disc, hard drives, etc. are not allowed unless
approved by the IASCA office.
• The source unit must be mounted properly and securely in the factory
OEM radio location of the vehicle.
AMPLIFIERS
• Competitors in Rookie Division are limited to one amplifier per pair
of subwoofers.
• One amplifier means that all amplifier components must be encased
within one heatsink. “Strapping” multiple amplifiers together as “one”
is not considered as one amplifier.
• Amplifiers must be safely and securely mounted in the vehicle.
SUBWOOFERS/SPEAKERS
• The Rookie Division is limited to subwoofers with single or dual
voice coils only; “Quad coil” subs are not allowed.
• Subwoofers must be mounted safely and securely in the vehicle and/
or subwoofer enclosure (sub box).
• All subwoofers must be mounted in the OEM cargo area of the
vehicle. Speakers and/or subwoofers mounted in the interior of the
vehicle, installed with the intent of increasing SPL levels below 100
Hz, will be deemed as part of the SPL system and the vehicle will be
reclassified to a higher Division/Class.
PROCESSORS
• All types of processors/line drivers/crossovers/equalizers are allowed
in IdBL competition, so long as they fit all criteria for competition
and are powered by the vehicle’s 12 volt charging system.
SOUND DEADENING
• Sound deadening (or dampening) materials may be used behind or
inside any factory OEM panels, so long as the factory panel remains
intact, unaltered and in its original factory OEM location.
SUBWOOFER ENCLOSURE/S
• Subwoofer enclosures (or Sub boxes) can be either pre-fabricated
(store bought) or custom made enclosures.
ROOKIE DIVISION—EQUIPMENT CRITERIA
IdBL - 21
• Subwoofer enclosures must be safely and securely mounted in the
cargo area of the vehicle; they cannot be sitting loose.
• The subwoofer enclosure cannot have a seal or gasket around it,
creating a seal between the interior and cargo area (e.g. fiberglass
cover around opening between interior and cargo area, sealing off the
cargo area from the interior).
• The subwoofer enclosure cannot exceed 25 inches in height from the
OEM floor of the cargo area to the top of the enclosure. This includes
any “supports” or “legs” that prop up the enclosure and any
components attached to the enclosure (amplifiers, subwoofer basket/
surround, power distribution block, etc.). If any part of the enclosure
utilizes the spare tire well area of the cargo area, the 25 inch height
measurement will be taken from the bottom of the spare tire well.
• Walls are not allowed in Rookie Division.
PORTS
• Ports can be either store bought generic plastic ports or square/
rectangular ports built into the enclosure. Store bought “flared” ports,
or flared ports built in to a pre fabricated enclosure are acceptable.
• ABS or PVC plumbing pipe, or any similar non standard porting/
tubing not specifically designed for car audio use, is not allowed.
• Square/rectangular ports must be part of the enclosure and fixed to the
enclosure (no adjustable ports allowed, round or square/rectangular).
• All styles of ports are limited to 14 square inches of port surface per
subwoofer (maximum 4” round port). Ports can be any length.
WIRING/CONNECTIONS/FUSING
• The maximum size power and ground wiring allowed in the Rookie
Division is 0 gauge wire. One (1) “run” of power wire and one (1) run
of ground wire is allowed from the battery to the amplifier/
distribution block.
• IASCA recommends that all wiring for electronics be fused at the
power source.
ELECTRICAL SYSTEM
• Maximum allowed voltage (vehicle running or off) is 15.5 volts.
• The vehicle’s OEM factory style alternator must remain intact and
unmodified, in its OEM factory location.
• Additional alternators and/or voltage regulators are not allowed.
• Vehicle electrical wiring (starter/alternator/body ground) may be
upgraded to the maximum allowable size of wire in Rookie Division.
BATTERIES
• Only one battery is allowed in Rookie Division.
• Battery must be a standard automotive 12 volt battery.
• The battery must be mounted in its factory OEM location.
• The battery may be upgraded, but the upgraded battery must fit in the
OEM factory battery location, with no modifications to the battery,
ROOKIE DIVISION—EQUIPMENT CRITERIA (cont.)
IdBL - 22
the battery mounting tray or the vehicle itself. Modifications to the
OEM factory battery tray or the vehicle will cause the competitor to
be reclassified in a higher Division, based on the extent of the
modifications.
CAPACITORS
• Up to 5 farads of capacitance is allowed in the Rookie Division.
• Competitors may use a single 5 farad capacitor or a multiple of
capacitors totaling 5 farads.
• All capacitors must be safely and securely mounted in the vehicle.
SAFETY EQUIPMENT
If a competitor chooses not to abide by the IASCA Worldwide Inc.
recommendation to fuse all electronics at the source of power, whereas
serious damage or injury to products, vehicles and/or people is
possible, it is advised to keep an “A-B-C” rated fire extinguisher at the
ready. Consult your local fire department for more information about
fire extinguishers.
ROOKIE DIVISION—EQUIPMENT CRITERIA (cont.)
Notes:
IdBL - 23
The intent of the Stock Division is provide a progression for Rookie
Division competitors that have gained a greater knowledge of, or for those
who have a greater knowledge of, SPL and competition than the average
consumer. Stock Division competitors typically use their “daily driver”
vehicles as their competition vehicles.
• Competitors in Stock Division cannot derive any income or support
from any facet of the mobile electronics industry or any of its
affiliations, including, but not limited to the sales, installation,
manufacturing, design, testing or engineering of mobile electronics
products.
• Competitors in Stock Division cannot derive any income or support
from the publishers of any mobile electronics publications, including
but not limited to television, radio, print and internet publications.
• Competitors that are part of a manufacturer’s competition team cannot
receive any support in the way of free product from the manufacturer
as this is considered sponsorship.
• Competitors in Stock Division must be able to provide proof that their
equipment was purchased through standard retail channels (e.g. sales
receipt, credit card receipt, cancelled check, etc.), if so requested by
any IASCA official.
• Competitors operating their sound system from inside the vehicle
while competing must operate the system from the standard driver’s
seat seating position. Competitors must be seated as if they were
driving the vehicle; no other seating position is acceptable.
• Competitors are allowed to have up to six (6) “co-pilots” assisting
them while competing in the competition lanes. If the co-pilots are
assisting by holding down panels on the vehicle, the co-pilots must
have both feet on the ground at all times during testing. Co-pilots are
not allowed to jump up on the trunk, hood or roof of the vehicle while
it is being tested.
• Competitors must completely fill out and sign their Official IdBL
score sheet. Failure to do so will result in the loss of any accrued
IASCA CAP points from the event, no exceptions.
IdBL STOCK DIVISION
STOCK DIVISION - COMPETITOR CRITERIA
IdBL - 24
1. All vehicles in the IdBL Stock Division must remain OEM stock.
External and internal aftermarket add-ons such as body kits, wings,
wheels, aftermarket seats, steering wheels or any automotive related
cosmetic and performance items not related to the vehicle’s 12 volt
electrical system are allowed.
2. Vehicles must be driven to local events (within a 100 mile radius)
under their own power and not towed or trailered in. Vehicles must
also be able to be driven in to the competition lane under their own
power.
3. All OEM panels and components in the vehicle must remain in their
factory mounted location (e.g. rear deck trim panels, door panels,
headliners, dashboards, seats, seat belts, etc.). Exception: panels that
are designed to be removable, such as the parcel shelf panel in some
hatchbacks, can be removed. The general rule of thumb is if the
vehicle manufacturer designed the item to be removable, it can be
removed; if the item is designed to be fixed in place, it may not be
removed. Any issues regarding the intent of the manufacturer with an
item will be decided by event officials and their decision will be final.
4. All OEM factory windows in the vehicle designed by the
manufacturer to be operational, must be able to function as the
manufacturer intended them to and nothing can impede their proper
operation. OEM glass may not be replaced with any transparent
substitute material.
5. No panels or sheet metal in the vehicle can be modified so as to
increase the SPL level of the vehicle. All sheet metal, steel, plastic,
wood and any other materials used by the manufacturer to build the
vehicle must remain intact and unaltered, with the following
exceptions; door panel build outs and kick pods built to house
operational speakers the purpose of increasing sound quality only
and/or panel modifications for cosmetic purposes will be allowed.
Build outs designed for the purpose of increasing SPL will not be
allowed. It is at the discretion of the IASCA event official/s to
determine the intent of the build outs; their decision will be final.
6. Competitors are not allowed to have any panels, covers or tinting
blocking the view to the inside of the vehicle during testing. Window
tinting is acceptable, so long as it does not impede the judge’s view of
the interior and any component of the measuring equipment during
testing. If any panel, covering or tinting is deemed to block the view
of the measuring equipment and/or is unacceptable by an IASCA
Certified Judge during an event, the competitor will be asked to
remove the item/s so as to not impede the view to the interior of the
vehicle. Refusal to do so may result in disqualification from the event.
7. All OEM factory seals and gaskets must be in place on all functional
panels (including but not limited to; doors, trunk, hatches, glass, etc.)
8. Pickup trucks with “cut throughs” from the bed to the cab are not
STOCK DIVISION - VEHICLE CRITERIA
IdBL - 25
allowed to compete in Stock Division
9. All equipment must be mounted in the OEM cargo area of the vehicle
in Stock Division, with the exception of regular cab, extended (king)
cab and crew cab trucks (see rule #10). For clarification purposes in
the case of SUV’s and minivans, the cargo area is considered as the
area directly behind the second row of seating in the vehicle. If the
vehicle is equipped with a third row (or more) of seating, it will not
affect the positioning of the enclosure so long as the enclosure
remains behind the second row of seating. Third row (or more)
seating only may be removed from the vehicle for competition, but
the second row seating must remain intact and securely fastened in the
vehicle (emulates a 4-5 passenger vehicle).
10. Regular cab, extended (king) cab and crew cab trucks are allowed to
compete in Stock Division so long as they do not have a “cut
through” from the bed to the cab. These vehicles are the only vehicles
where equipment and enclosures are allowed to be mounted in the
passenger compartment of the vehicle;. There are certain guidelines
for competitors with these vehicles; REGULAR CAB TRUCKS
(Compact and Full Size) - The subwoofer enclosure must be mounted
to the rear wall of the cab and no taller than 25 inches in height (see
equipment criteria for Stock Division) from the cab floor. The
enclosure cannot impede the full operation of the seat and seat travel
must remain intact. EXTENDED (KING) AND CREW CAB
TRUCKS (Compact and Full Size) - The subwoofer enclosure can be
mounted in the rear “seat” or passenger area of the vehicle, but the
enclosure depth cannot exceed 20 inches. Additionally, the enclosure
must be mounted to the rear wall of the cab and no taller than 25
inches in height from the cab floor. The enclosure cannot impede the
full operation of the seat and seat travel must remain intact.
11. Vehicles equipped with OEM factory “fold down” rear seats may be
folded down during testing; however, the seat must maintain full
functionality and nothing may impede its proper operation. In other
words, when the seat is in its folded position, it must be able to open
and close properly with the enclosure in its “competition” position.
Extended Cab and Crew Cab trucks are exempt from this rule.
12. The vehicle must have the factory OEM dashboard in place, intact and
unmodified from its original design. All accessories/gauges/switches
in the dashboard must remain functional. The only additions allowed
to an OEM dashboard are the painting of “snap in” panels on the
dashboard and speakers for improving sound quality only.
13. Aftermarket and/or custom center consoles are allowed in IdBL Stock
Division competition, but said console/s must be securely mounted
and functional. “Functional” means that the console must provide
storage for accessories and/or house functional electronic equipment.
If in the opinion of the IASCA official, the console is designed for the
STOCK DIVISION - VEHICLE CRITERIA (cont.)
IdBL - 26
purpose of increasing SPL, they may reclassify the competitor to a
higher Division. Any aftermarket or custom console installed in a
Stock Division vehicle cannot extend in height past the bottom of the
steering wheel. In the case of vehicles equipped with tilt steering, the
steering wheel will be positioned perpendicular to the steering column
to take the measurement.
14. No additional brackets or holders may be attached to the vehicle in
any way, or anywhere, on the vehicle, for the purpose of housing
additional equipment of any type. The complete vehicle (exterior and
interior) must maintain its OEM factory look.
15. Nothing in the vehicle may interfere with the correct placement of
the measuring device and its placement jig.
16. Any modification to a vehicle that is not covered in this section will
be considered illegal in Stock Division competition and must be
approved by the IASCA Head Office before being allowed in
competition.
17. All seats must remain in the vehicle during testing in Stock Division.
18. Vehicles that are not allowed to compete in Stock Division include,
but are not limited to; limousines, conversion vans, ambulances,
buses, delivery trucks and/or vans (cube vans), motorhomes, armored
cars and/or any other vehicle that has been built or modified by
someone other than an automobile manufacturer. If there is a question
as to the legality of a vehicle in Stock Division competition, the
decision will fall to the IASCA Head Office and that decision will be
final. If a vehicle in question attends an event to participate, the event
officials are instructed to allow the vehicle to compete and after the
event, send the information to the IASCA Head Office to be reviewed
for the decision. If the vehicle is found to be illegal for competition in
the Stock Division, it will be reclassified and the competitor, officials
and event host will be notified immediately. Vehicle and competitor
positioning and CAP points will be adjusted for that event.
STOCK DIVISION - VEHICLE CRITERIA
IdBL - 27
All equipment used in the Stock Division must be commercially
available through standard retail channels (retailer, box store, etc.).
Equipment used can not be modified in any way.
SOFTWARE
• Competitors can use any approved, commercially available CD for
competition (except TKE’s). CD-R’s, CD-RW’s, MP3’s, etc. are not
allowed in competition whatsoever.
• Commercially available CDs with test tones and/or sine sweeps are
allowed for use in Stock Division.
SOURCE UNITS
• Only CD source units (head units, CD players) are acceptable for
IdBL competition. iPods, DAT, mini disc, hard drives, etc. are not
allowed unless approved by the IASCA office.
• The source unit must be mounted properly and securely in the factory
OEM radio location of the vehicle. The source unit used in
competition may be removed from its factory location for the purpose
of competing.
AMPLIFIERS
• Competitors in Stock Division are limited to one amplifier per
subwoofer.
• One amplifier means that all amplifier components must be encased
within one heatsink. “Strapping” multiple amplifiers together as “one”
is not considered as one amplifier.
• Amplifiers must be safely and securely mounted in the vehicle.
SUBWOOFERS/SPEAKERS
• All types of subwoofers are allowed in Stock Division competition, as
long as they fit all other criteria specified for equipment.
• Subwoofers must be mounted safely and securely in the vehicle and/
or subwoofer enclosure (sub box).
• All subwoofers must be mounted in the OEM cargo area of the
vehicle in Stock Division. Speakers and/or subwoofers mounted in the
interior of the vehicle, installed with the intent of increasing SPL
levels below 100 Hz, will be deemed as part of the SPL system and
the vehicle will be reclassified to a higher Division/Class.
PROCESSORS
• All types of processors/line drivers/crossovers/equalizers are allowed
in IdBL competition, so long as they fit all criteria for competition
and are powered by the vehicle’s 12 volt charging system.
CAPACITORS
• Up to 10 farads of total capacitance is allowed in Stock Division.
• Competitors may use a single capacitor or a multiple of capacitors
totaling 10 farads. All capacitors must be safely and securely mounted
in the vehicle.
STOCK DIVISION - EQUIPMENT CRITERIA
IdBL - 28
SUBWOOFER ENCLOSURE/S
• Subwoofer enclosures (or Sub boxes) can be either pre-fabricated
(store bought) or custom made enclosures.
• Subwoofer enclosures must be safely and securely mounted in the
cargo area of the vehicle; they cannot be sitting loose.
• Subwoofer enclosures can have a seal or gasket creating a seal
between the interior and cargo area (e.g. fiberglass cover around
opening between interior and cargo area, sealing off the cargo area
from the interior).
• The subwoofer enclosure cannot exceed 25 inches in height from the
OEM floor of the cargo area to the top of the enclosure. This includes
any “supports” or “legs” that prop up the enclosure and any
components attached to the enclosure (amplifiers, subwoofer/basket/
surround, power distribution block, etc.). If any part of the enclosure
utilizes the spare tire well area of the cargo area, the 25 inch height
measurement will be taken from the bottom of the spare tire well.
• Walls are not allowed in Stock Division.
PORTS
• All port styles and designs are allowed in Stock Division.
• ABS or PVC plumbing pipe, flared ports or any similar non standard
porting is allowed.
WIRING/CONNECTIONS/FUSING
• The maximum size power and ground wiring allowed in Stock
Division is 1/0 gauge wire. One (1) “run” of power wire and one (1)
run of ground wire per amplifier is allowed from the battery/ies to
the additional battery/amplifier/distribution block.
• IASCA recommends that all wiring for electronics be fused at the
power source.
ELECTRICAL SYSTEM
• Maximum allowed voltage (vehicle running or off) is 15.5 volts.
• The vehicle’s OEM factory style alternator can be upgraded from its
original OEM factory output only. Larger alternators in physical size
and/or shape are not allowed.
• Additional alternators are not allowed.
• If used, the upgraded alternator must be mounted in the factory OEM
location of the original factory OEM alternator.
• Vehicle electrical wiring (starter/alternator/body ground) may be
upgraded to the maximum allowable size of wire in Stock Division.
• Outboard adjustable voltage regulators on alternators are allowed,
however the controls for the voltage regulator must be mounted in an
accessible location while operating the system, for safety reasons.
BATTERIES
• Two (2) batteries total are allowed in Stock Division. This includes
the vehicle’s main battery.
STOCK DIVISION - EQUIPMENT CRITERIA (cont.)
IdBL - 29
• Batteries must be standard 12 volt batteries; variations of individual or
multiple battery cells equaling 12 volts are not allowed (e.g. two 6
volt batteries connected in series or six two volt batteries connected
the same way). Each individual battery will be counted as an
individual battery, no matter what the voltage.
• One battery must be mounted in the factory OEM battery location.
• The batteries may be upgraded.
• Both batteries must be no larger than 1,200 cubic inches of volume
each. To calculate battery volume, multiply the length, width and
height (in inches) together (L x W x H= Total battery volume in cubic
inches) to determine volume.
• Batteries must be commercially available through standard retail
channels (auto supply store, battery supplier, etc.)
• Both batteries must be connected to the vehicle’s 12 volt charging
system and properly fused, and cannot operate independently from the
vehicle’s factory OEM charging system.
• Any and all batteries in the vehicle, whether connected to the vehicle
or vehicle’s charging system or not, will be counted as part of the
system and the vehicle will be classified as having that amount of
batteries.
• The additional battery must be mounted and securely fastened in the
OEM cargo area of the vehicle; batteries are not allowed in the
passenger area (interior) of the vehicle, whether connected or not,
during testing.
• Non sealed, automotive style batteries mounted in the OEM cargo
area must be enclosed and vented to the outside of the vehicle.
SOUND DEADENING
• Sound deadening (or dampening) materials may be used behind or
inside any factory OEM panels, so long as the factory panel remains
intact, unaltered and in its original factory OEM location.
SAFETY EQUIPMENT
If a competitor chooses not to abide by the IASCA Worldwide Inc.
recommendation to fuse all electronics at the source of power, whereas
serious damage or injury to products, vehicles and/or people is
possible, it is advised to keep an “A-B-C” rated fire extinguisher at the
ready. Consult your local fire department for more information about
fire extinguishers.
STOCK DIVISION - EQUIPMENT CRITERIA (cont.)
Notes:
IdBL - 30
The intent of Stock Pro Division is to provide a progression for Rookie
and Stock Division competitors as they gain knowledge in building SPL

shameer · Posted: Wed Apr 16, 2008 9:18 pm Post subject:

we goin again

IdBL - 30
The intent of Stock Pro Division is to provide a progression for Rookie
and Stock Division competitors as they gain knowledge in building SPL
systems and upgrade their equipment. It is designed for “veteran”
competitors who have gained substantial knowledge during their tenure in
the lower Divisions. These competitors will typically still use their “daily
driver” vehicles as their competition vehicles and will have modified their
vehicle beyond the criteria outlined in the Stock Division.
• Stock Pro competitors may be associated and/or work within the
mobile electronics industry or any of its affiliates.
• Stock Pro competitors may receive compensation or support in the
form of sponsorships from any facet of the mobile electronics industry
or its affiliates, even though they may not work directly in the
industry.
• Competitors operating their sound system from inside the vehicle
while competing must operate the system from the standard driver’s
seat seating position. Competitors must be seated as if they were
driving the vehicle; no other seating position is acceptable.
• Competitors are allowed to have up to six (6) “co-pilots” assisting
them while competing in the competition lanes. If the co-pilots are
assisting by holding down panels on the vehicle, the co-pilots must
have both feet on the ground at all times during testing. Co-pilots are
not allowed to jump up on the trunk, hood or roof of the vehicle while
it is being tested.
• Competitors must completely fill out and sign their Official IdBL
score sheet. Failure to do so will result in the loss of any accrued
IASCA CAP points from the event, no exceptions.
STOCK PRO DIVISION - COMPETITOR CRITERIA
IdBL - 31
1. All vehicles in the IdBL Stock Pro Division must remain OEM stock.
External and internal aftermarket add-ons such as body kits, wings,
wheels, aftermarket seats, steering wheels or any automotive related
cosmetic and performance items not related to the vehicle’s 12 volt
electrical system are allowed.
2. Vehicles must be driven to local events (within a 100 mile radius)
under their own power and not towed or trailered in. Vehicles must
also be able to be driven in to the competition lane under their own
power.
3. All OEM panels and components in the vehicle must remain in their
factory mounted location (e.g. rear deck trim panels, door panels,
headliners, dashboards, seats, seat belts, etc.). Exception: panels that
are designed to be removable, such as the parcel shelf panel in some
hatchbacks, can be removed. The general rule of thumb is if the
vehicle manufacturer designed the item to be removable, it can be
removed; if the item is designed to be fixed in place, it may not be
removed. Any issues regarding the intent of the manufacturer with an
item will be decided by event officials and their decision will be final.
4. All OEM factory windows in the vehicle designed by the
manufacturer to be operational, must be able to function as the
manufacturer intended them to and nothing can impede their proper
operation. OEM glass may not be replaced with any transparent
substitute material.
5. No panels or sheet metal in the vehicle can be modified so as to
increase the SPL level of the vehicle. All sheet metal, steel, plastic,
wood and any other materials used by the manufacturer to build the
vehicle must remain intact and unaltered, with the following
exceptions; door panel build outs and kick pods built to house
operational speakers the purpose of increasing sound quality only
and/or panel modifications for cosmetic purposes will be allowed.
Build outs designed for the purpose of increasing SPL will not be
allowed. It is at the discretion of the IASCA event official/s to
determine the intent of the build outs; their decision will be final.
6. Competitors are not allowed to have any panels, covers or tinting
blocking the view to the inside of the vehicle during testing. Window
tinting is acceptable, so long as it does not impede the judge’s view of
the interior and any component of the measuring equipment during
testing. If any panel, covering or tinting is deemed to block the view
of the measuring equipment and/or is unacceptable by an IASCA
Certified Judge during an event, the competitor will be asked to
remove the item/s so as to not impede the view to the interior of the
vehicle. Refusal to do so may result in disqualification from the event.
7. All OEM factory seals and gaskets must be in place on all functional
panels (including but not limited to; doors, trunk, hatches, glass, etc.)
STOCK PRO DIVISION - VEHICLE CRITERIA
IdBL - 32
8. Pickup trucks with “cut throughs” from the bed to the cab are allowed
to compete in Stock Pro Division.
9. All equipment (Except source unit and speakers for sound quality)
must be mounted in the OEM cargo area of the vehicle in Stock Pro
Division, with the exception of regular cab, extended (king) cab and
crew cab trucks (see rule #10). For clarification purposes in the case
of SUV’s and minivans, the cargo area is considered as the area
directly behind the second row of seating in the vehicle. If the vehicle
is equipped with a third row (or more) of seating, it will not affect the
positioning of the enclosure so long as the enclosure remains behind
the second row of seating. Third row (or more) seating only may be
removed from the vehicle for competition, but the second row seating
must remain intact and securely fastened in the vehicle (emulates a 4-
5 passenger vehicle).
10. Regular cab, extended (king) cab and crew cab trucks are allowed to
compete in Stock Pro Division even though they may not have a “cut
through” from the bed to the cab. These vehicles are the only vehicles
where equipment and enclosures are allowed to be mounted in the
passenger compartment of the vehicle. There are certain guidelines for
competitors with these vehicles; REGULAR CAB TRUCKS
(Compact and Full Size) - The subwoofer enclosure must be mounted
to the rear wall of the cab and no taller than 25 inches in height (see
equipment criteria for Stock Division) from the cab floor. The
enclosure cannot impede the full operation of the seat and seat travel
must remain intact. EXTENDED (KING) AND CREW CAB
TRUCKS (Compact and Full Size) - The subwoofer enclosure can be
mounted in the rear “seat” or rear passenger area of the vehicle, but
the enclosure depth cannot exceed 20 inches. Additionally, the
enclosure must be mounted to the rear wall of the cab and no taller
than 25 inches in height from the cab floor. The enclosure cannot
impede the full operation of the front seat and front seat travel must
remain intact.
11. Vehicles equipped with OEM factory “fold down” rear seats may be
folded down during testing; however, the seat must maintain full
functionality and nothing may impede its proper operation. In other
words, when the seat is in its folded position, it must be able to open
and close properly with the enclosure in its “competition” position.
Exception: Extended cab or crew cab trucks may have the rear seat
removed in order to house the subwoofer enclosure if the enclosure is
mounted in the rear seat area of the vehicle.
12. The vehicle must have the factory OEM dashboard in place, intact and
unmodified from its original design. All accessories/gauges/switches
in the dashboard must remain functional. The only additions allowed
to an OEM dashboard are the painting of “snap in” panels on the
STOCK PRO DIVISION - VEHICLE CRITERIA (cont.)
IdBL - 33
dashboard and speakers for improving sound quality only.
13. Aftermarket and/or custom center consoles are allowed in IdBL Stock
Pro Division competition, but said console/s must be securely
mounted and functional. “Functional” means that the console must
provide storage for accessories and/or house functional electronic
equipment. If in the opinion of the IASCA official, the console is
designed for the purpose of increasing SPL, they may reclassify the
competitor to a higher Division. Any aftermarket or custom console
installed in a Stock Pro Division vehicle cannot extend in height past
the bottom of the steering wheel. In the case of vehicles equipped
with tilt steering, the steering wheel will be positioned perpendicular
to the steering column to take the measurement.
14. No additional brackets or holders may be attached to the vehicle in
any way, or anywhere, on the vehicle, for the purpose of housing
additional equipment of any type. The complete vehicle (exterior and
interior) must maintain its OEM factory look.
15. Nothing in the vehicle may interfere with the correct placement of
the measuring device and its placement jig.
16. Any modification to a vehicle that is not covered in this section will
be considered illegal in Stock Pro Division competition and must be
approved by the IASCA Head Office before being allowed in
competition.
17. All seats must remain in the vehicle during testing in Stock Pro
Division.
18. Vehicles that are not allowed to compete in Stock Pro Division
include, but are not limited to; limousines, conversion vans,
ambulances, buses, delivery trucks and/or vans (cube vans),
motorhomes, armored cars and/or any other vehicle that has been built
or modified by someone other than an automobile manufacturer. If
there is a question as to the legality of a vehicle in Stock Division
competition, the decision will fall to the IASCA Head Office and that
decision will be final. If a vehicle in question attends an event to
participate, the event officials are instructed to allow the vehicle to
compete and after the event, send the information to the IASCA Head
Office to be reviewed for