I'm having a major issue with vibration and am not quite sure the best route to overcome this. I have already installed sound deadner (b-quiet) in the trunk and on the doors but I'm still getting quite a bit of very noticable resonance from my trunk. I was thinking of putting another layer of b-quiet but I dont think one additional layer can overcome this...

My setup constitutes;
Amp - Lanzar OPTI2000D @ 1 ohm (1.6kW rms)
Sub - Lanzar OPTI1532D (15 inch)
Enclosure - Spare tire well sealed with sub inverted
Car - 2001 Cavalier 4 door sedan

Any advice would be greatly appreciated...

well if it happens to be your seatbelt recoils... I wish you the best of luck... that being the same problem I have yet to figure out with my trunk... for the life of me I can't figure out what I could do to them to take out the jingle... where do you think your noise if coming from? turn up the bass hop in the back seat and have a good listen.. and if anyone has any suggestions on the seatbelt recoils please fire away...

tkink thats bad , my front seatbelt recoils rattle right beside your head .

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premier prs 880
focal k2p upgraded 6.5,s
tn52 tweets
2 jl 300/2,s
jl 500/1
2jl w7 8"s
tuned to 30 hz

i got a bad problem with my spolier myself i have b queit thru my hole car too but i cant get that stupid spoiler to stop ratteling

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1999 Grand Am RED
- Alpine DVA-9965 Head Unit
- Focal Front 5 1/2's
- Focal Rear 6x9's
- 15" L7 Kicker / 5.6 cubic foot box net
- Ultimate T3-1000D Amp
- 200 Amp high output Altenator
- Yellow Top Battery
- 0 Gauge Wire

got some new power and some new adjustments now running a 146.7 on TL

Welcome to the world of Bass . everything and anything will ratlle. You get rid of 1 and you will hear 4 more!!

i just gave up and now keep the music at a decent level so as to avoid over rattling .. lol ( well that and hearing loss)

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Talk to me! msn --> aaronone321@hotmail.com

Alpine 9805
Kicker S10L5 (2004) in ported box
Power Acoustik LT980/2 500 rms @ 4 ohms mono
Power Acoustik LT720/4 70 rms @ 4 ohms x 4
JBL 5 1/4" components

damn bass Cant live with it cant live without it hahaha

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1999 Grand Am RED
- Alpine DVA-9965 Head Unit
- Focal Front 5 1/2's
- Focal Rear 6x9's
- 15" L7 Kicker / 5.6 cubic foot box net
- Ultimate T3-1000D Amp
- 200 Amp high output Altenator
- Yellow Top Battery
- 0 Gauge Wire

got some new power and some new adjustments now running a 146.7 on TL

I think I'll put another 2 layers of b-quiet and see if it helps. From the looks of things I have my work cut out for me in making this car acoustically sound...The resonance is not only limited to the trunk. The front and back windscreens and all the windows in the car are flexing significantly (my wipers are also vibrating). The bumper is also a severe issue. The roof isn't a source of resonance but I'll still put a layer of b-quiet on there. I hope this works...

haha thats alot of fixing to do i didnt really care bout my windows and wipers there basicly nothing u can do about that when they start shaking it just means your system is MEAN !!! haha so atleast u can brag to all ur firends that your windows and wipers shake and theres dont LoL

-Richard

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1999 Grand Am RED
- Alpine DVA-9965 Head Unit
- Focal Front 5 1/2's
- Focal Rear 6x9's
- 15" L7 Kicker / 5.6 cubic foot box net
- Ultimate T3-1000D Amp
- 200 Amp high output Altenator
- Yellow Top Battery
- 0 Gauge Wire

got some new power and some new adjustments now running a 146.7 on TL

Hey

In one of my previous cars I did some experimenting and found that adding small sections of deadener did a better job than covering the whole thing. Cleaning and ensuring it was smooth to get the best bond possible also helped. Someone told me it was because I was changing the resonant frequency of the sheet metal in only one spot, but I can't say for sure.

In my last car I removed the spoiler, sounded much better.

Later - J

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Bought a 1993 Chevy Astro, 43,000km's complete service history right to original bill of sale. What I have put in it?
*Focal 330kx
*uDimension 20vs Denon 3560
*Martin Logan electrostatics from Aerius I
*mids -BMI65
*CD900
Keeping Kimber Hero & Silver streak cables and Goertz AG2 and AG3 speaker wire.

Been there haha, Seemed no matter how many layers I add'd.....I couldnt solve the problem always was a lil rattle kicking it. Might have been the stuff I was using ( Roofing material ) but I have heard of many people using that as a cheap alternative. Next car I do im going with all liquid deadener. Strip the car and give it mad layers of liquid from front to back, bottom to top. Best of luck getting your situation under control.