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altec
Trinituner Peong
Joined: 18 Apr 2003
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Location: Land of Destruction
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 Posted: Tue Feb 02, 2010 10:03 pm
Post subject: what to do to tame door glass reflection? |
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| I find that my music gets kinda piercing in the upper region at louder listening volume. when the glass is down it evens out the compressed sound and the imaging returns. my system is set for sq only and the system comprises of dls, jl and pioneer. |
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pimptacular
TriniTuner 24-7
Joined: 14 May 2006
Tech posts: 1698
Location: in the backseat of your car with your gyul
My 2NRide: BMW 330Ci
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Posted: Tue Feb 02, 2010 10:20 pm
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have you tried adjusting the speaker positioning?
adjusting crosspoint?
adjusting the eq? |
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SR
Chief Cook & Instigator
Joined: 07 Apr 2003
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Posted: Wed Feb 03, 2010 8:56 am
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| try placing a piece of cloth or acoustic foam on the glass to confirm if its reflections from the glass or change of the vehicles acoustics due to the windows being down |
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jeff
TriniTuner WHOoRE
Joined: 03 Jul 2005
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Posted: Wed Feb 03, 2010 9:40 am
Post subject: Re: what to do to tame door glass reflection? |
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| altec wrote: | | I find that my music gets kinda piercing in the upper region at louder listening volume. when the glass is down it evens out the compressed sound and the imaging returns. my system is set for sq only and the system comprises of dls, jl and pioneer. |
if you experience this effect only at a louder volume then it is possible that reflections may not be your issue otherwise why not have this effect at a normal level with your windows up?
tuning and or maybe power compression or distortion can also cause this effect.
how much power you have on your tweets and what are they crossed at |
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altec
Trinituner Peong
Joined: 18 Apr 2003
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Posted: Wed Feb 03, 2010 9:46 pm
Post subject: |
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| tweets x at 5000 and 12 db, I played some music with the cloth clipped on the glass and it reduces the piercing heights somewhat. I think I might have to redo the pods. Trying to figureout how to make aimable pods that not big |
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jeff
TriniTuner WHOoRE
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Posted: Wed Feb 03, 2010 10:12 pm
Post subject: |
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| altec wrote: | | tweets x at 5000 and 12 db, I played some music with the cloth clipped on the glass and it reduces the piercing heights somewhat. I think I might have to redo the pods. Trying to figureout how to make aimable pods that not big |
redo the pods in what way? |
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Brian Steele
3NE 2NR for life
Joined: 03 Dec 2009
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Posted: Wed Feb 03, 2010 10:20 pm
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| altec wrote: | | tweets x at 5000 and 12 db, I played some music with the cloth clipped on the glass and it reduces the piercing heights somewhat. I think I might have to redo the pods. Trying to figureout how to make aimable pods that not big |
How about a foam diffraction ring around the tweeter? That should reduce some of the indirect output a bit, unless the tweeter is facing the glass, of course. |
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altec
Trinituner Peong
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Posted: Wed Feb 03, 2010 10:25 pm
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| its on axis center is pointing to about 8 inches inside of the front edge of the glass. |
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pimptacular
TriniTuner 24-7
Joined: 14 May 2006
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Location: in the backseat of your car with your gyul
My 2NRide: BMW 330Ci
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Posted: Wed Feb 03, 2010 10:41 pm
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that doesnt sound on axis  |
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altec
Trinituner Peong
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Posted: Wed Feb 03, 2010 11:03 pm
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| the tweeter's on axis center, in other words the center of the tweet |
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X_Factor
30 pounds of Boost
Joined: 27 Apr 2003
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Location: St. Augustine
My 2NRide: NISSAN SENTRA b14
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Posted: Wed Feb 03, 2010 11:24 pm
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^
pics? |
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jeff
TriniTuner WHOoRE
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Posted: Thu Feb 04, 2010 3:25 am
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| what are the mids crossed at |
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altec
Trinituner Peong
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Posted: Thu Feb 04, 2010 5:55 am
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| same x at 5000 and 12 db i can get pics weekend, reach home too late during the week. |
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jeff
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Posted: Thu Feb 04, 2010 12:03 pm
Post subject: |
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| altec wrote: | | same x at 5000 and 12 db i can get pics weekend, reach home too late during the week. |
this May be what is causing it here and not the tweeter
freqs between 3k and 5k are very sensitive to the ears and are responsible for "ear fatigue" and music harshness
i dont believe you are using the passive with that set and if i can recall those mids may not be able to play that high thus cone break up in that region may be adding to this. |
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Aimar
Sweet on this forum
Joined: 12 Nov 2004
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Posted: Thu Feb 04, 2010 1:55 pm
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^^keep the install as is and wire it with the passives.
listen for differences 
If that's not ur ambient tweeter up top, then u should try to keep it closer to the woofer  |
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jeff
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Posted: Thu Feb 04, 2010 3:24 pm
Post subject: |
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| Aimar wrote: | ^^keep the install as is and wire it with the passives.
listen for differences
If that's not ur ambient tweeter up top, then u should try to keep it closer to the woofer |
what he could even try is to leave it as it is and keep it active but use a steeper slope on the mid low pass to prevent the break up or phase shift
if this is the same install as a while back then issue should not lie in the equip nor the install |
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altec
Trinituner Peong
Joined: 18 Apr 2003
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Posted: Thu Feb 04, 2010 9:01 pm
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| will try the suggestions and post the results |
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Aimar
Sweet on this forum
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Posted: Fri Feb 05, 2010 1:00 am
Post subject: |
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 Is it his source/ music |
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SR
Chief Cook & Instigator
Joined: 07 Apr 2003
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Posted: Fri Feb 05, 2010 6:11 am
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i agree with jeff
the tweets crossed at 5k and up as well as the mids at 5 k and up??
the mids may be the culprit at high volume
suggest running an rta on it at different volume levels to see if there is anything changing as you raise the volume |
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altec
Trinituner Peong
Joined: 18 Apr 2003
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Posted: Sat Feb 06, 2010 12:56 pm
Post subject: |
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| well played with the fronts again, i think the main culprit is the tweeter angle. i feel at low volume there is not much reflection, at mid to hi I can turn off the right tweeter and would be a a sort of mono "in front your face". when I hold up a towel near the driver's glass, the sound moves to the left. this was done without the the mids playing. |
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BLUE_CP9A
3NE2NR is my LIFE
Joined: 06 Sep 2003
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Location: Trinidad
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Posted: Sat Feb 06, 2010 5:38 pm
Post subject: |
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| what component set we talking about? |
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jeff
TriniTuner WHOoRE
Joined: 03 Jul 2005
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Posted: Sat Feb 06, 2010 6:15 pm
Post subject: |
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| altec wrote: | | well played with the fronts again, i think the main culprit is the tweeter angle. i feel at low volume there is not much reflection, at mid to hi I can turn off the right tweeter and would be a a sort of mono "in front your face". when I hold up a towel near the driver's glass, the sound moves to the left. this was done without the the mids playing. |
i thought we were talking about harshness in the high freq region rather than imaging? |
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BLUE_CP9A
3NE2NR is my LIFE
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Location: Trinidad
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Posted: Sat Feb 06, 2010 6:55 pm
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I gather from what I'm reading you're running active.
What processing are you using?
Also which component set we're talking about?
I see two persons talking about human sensitivity at 3-5k , i echo their thoughts which could be your problem |
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