18 sound, RCF or B&C

[pioneer]

[ChristianRD]

[southside connections]

the rcf is usable to 70hz accuratly, given u have a bandpass enabled x-over, that keeps it in a very sharp cutoff range

eg-

70hz-1.2khz, at 24db/octave


after that you can have a driver involved, used from 1.2khz to 20khz, this makes it a 2way system


however, to make it alot more accurate and louder, you can go 3way

eg-

rcf l12p540 (50hz to 120hz)
rcf l10750yk (120hz-2.5khz)
rcf n450 driver- (2.5khz-20khz)



the resulting configuretion is a 3way and will allow for a much smaller driver unit being used


this ofcourse is only applicable if you have the proper enclosures being used for the midrange

[pioneer]

ahhh thank u southside, but having said that...do most "gallary" men even think about bandpass xovers?

most of the carshows i went and jus "listened" to some of these cars gave me a headache and left a sharp ring in my ear, distortion...music sounding monotonous...annoying...one tone bass...

But eh, these guys like it so

[3stagevtec]

[southside connections]

well for one pioneer, i use them when possible

if my guys can't afford the active x-overs, i look into passive ones, and use a 15band or better eq

passives also allow for a much more simple system, utilizing just one 2 channel amp, or 1 4channel amp per left and right

both passive and active have their downfalls, but in most large gallery applications active will be much more useful in terms of control over each driver independently

passive on the other hand, well makes the both drivers play as one unit, making it very easy to control, well in terms considering that the x-over has been designed with variable slopes, and attenuations

another advantage to passive, is that it's a cheaper alternative and it's simplicity, but the major downfall would be the fact that you need a very powerful amplifer to achive full output from your drivers, since it has no dampening factor feedback for the amp to use


as i said b4, the advantages and disadvatages are numerous, and so, it would come down to your personal knowledge and skill level



remember, the crossovers are one thing, speaker frequency response is very tied into this, choose the right driver for the right applications, learn to use frequency response graphs and take the manufacturer's specifications very very seriously, as there is a very fine line to damaging the products

you can't go and take a midrange optimised driver and expect it to play midbass very well

hence i said, choose the right driver for the right application, and even the cheapest drivers will sound great

i

[pioneer]

But isn't it an overwhelming fact that most people using "pro audio" speakers just slap them in and assume they can be used as set of comps made for car audio applications?

Hence the annoyance and outright disgust they create in carshows and public places?

[southside connections]

corect is right & most trinins take advice widly and won't take time to look futher into their choices

[(...Rovin...)]

thing with d guys who using d pro audio equip most of them just buy 2 of this & 2 of dat going on brand name & not specific model number , they dont take d time to go online & do some research about d freq operating bandwidth to after pick out what pieces of equipment will work well together

they start off with a low model deck with only 1 pair of rca , put in a preamp & then a cross , they dont know what speaker operates within what band width & what to cut off d freqs , buy some low end brand amp\s which is also most likely not enough power for d speakers\drivers then turning up d gain "to max out d power" at d same time doing d same with settings in d deck .

I really wonder about d guys who buy a higher end deck with 3 sets of rcas which have at least a 7 band eq & they put a preamp on it or a 6xs or matrix or epi or matrix etc because thats what their padna do or installer advise , now they cud never get d set to sound clear since too much thing to tune & if u turn 1 up it throws off d other piece of equipment in d chain ....keep things simple !

[southside connections]

here's a very simple system as said, and as used-

pioneer 3100ub
6xs



thats it, and it is capable to be tuned very well, and you can drive up to 2 amps off one pair of outputs comfortably

[silent_riot]

Sorry to stray, but I think its a valid point...
What kinds of setups do the few good sounding gallery cars actually run? eg. Comfort, the tweety tuned cifero.

Maybe that will help the guys who are looking to get into it start off on the right foot.

[southside connections]

they have usually a very very complicated set

eg tweety tuned-

2 15 band eq's, and at most times it's a lanzar

in comfort's, well all i cud manke out was a mcd360 and a preamp

[southside connections]

they have usually a very very complicated set

eg tweety tuned-

2 15 band eq's, and at most times it's a lanzar

in comfort's, well all i cud manke out was a mcd360 and a preamp

[silent_riot]

Well I honestly think that maybe that's the kind of processing one needs to sound good with a gallery setup.
I can see the need for a 15 band EQ or more to get the response where they want it outside the vehicles.

[southside connections]

but at most times it's not nessary, too much processing can cause alot of problems

[noyztoyz]

tweety uses 2 ppi pcx2400 to run his tens and 8s, and smaller ppis to run other things, i cant link mids and amps cuz he has a lot of speakers in there.

[silent_riot]

But at most times, gallery vehicles don't sound good...plain and simple.

What I'm saying is that if the few that do sound good needs that level of processing, then the ones that want to sound good should be utilizing that level of processing to tune their systems as well.

[(...Rovin...)]

to 'dial in' those loud mids imo if ur hu has a good EQ it helps alot to 'smooth out' & raise some of d dips & peaks some of those speakers & drivers naturally have

u ever notice alot of those vehicles with drivers does not really play d very 'fine highs' - thats because some of them on their HUs & processing they dont have those bands they can use to adjust ... though some drivers like some of d selenium models just does not have that wide a freq range so they fall short & simply cannot play d 'fine highs' ... u see ppl adding tweeters to get those highs ...with a bit of EQing d n850 rcf actually do a good job on d 'fine highs'.....

[(...Rovin...)]

also u cud have all d best equipment & best install but d most important thing imo is a good quality recording ...try using a lowish bit rate mp3 on ur set & hear how crappy that sounds ...

[ChristianRD]