Buzzzing Noise On My Aftermarket Stereo?! Annoying!

dmw2692004 · September 6, 2007

So i stripped my 2002 Yukon's factory stereo and replaced everything and added a sub.

Specs:

JVC headunit

Kenwood 6.5" 2-way coaxails (4, 2 front, 2 back) (rms-30watts peak-120watts)

Kenwood Amp on woofer (200rms 600max)

JL 12w2v4

Now the problem:

When i listen to music that is very mid-bass heavy, i get a buzzing sounds thats like resonance on my doors, im using the radio to amplify the speakers. The speakers are secured using the factory clips in the front, and the factory mounting bracket in the back.

Does anyone else have this in your cars? and how can i stop this?

Thanks for the help in advance.

SierraLeone · September 7, 2007

So i stripped my 2002 Yukon's factory stereo and replaced everything and added a sub.

Now the problem:

When i listen to music that is very mid-bass heavy, i get a buzzing sounds thats like resonance on my doors, im using the radio to amplify the speakers. The speakers are secured using the factory clips in the front, and the factory mounting bracket in the back.

Thanks for the help in advance.

I do not have the problem, but I have a suggestion for fixing it. It would be a big help if you had an engineering degree in acoustics, but barring that you might try putting in some sound deadening high-density foam. They carry it at retailers that sell high-end vehicle audio systems, the kind where guys like to boost up the bass and rock all the cars stopped at an intersection. I am thinking that Crutchfield's may have it. It is peel-and-stick, I would apply liberally inside the speaker recess area.

dmw2692004 · September 7, 2007

I do not have the problem, but I have a suggestion for fixing it. It would be a big help if you had an engineering degree in acoustics, but barring that you might try putting in some sound deadening high-density foam. They carry it at retailers that sell high-end vehicle audio systems, the kind where guys like to boost up the bass and rock all the cars stopped at an intersection. I am thinking that Crutchfield's may have it. It is peel-and-stick, I would apply liberally inside the speaker recess area.

I was thinking somewere along those lines, but will that really stop the resonance if the whole door is not covered with it?

I was thinking maybe a speaker baffle and then some 10by10 sound deadning sheets around the speaker.

Would stuffing the doors with polyfill do anything to help increase acoustics?

September 7, 2007

Stuffing the doors would probably interfere with the windows.

Sound deadening is what you need. A ceaper (and more importantly, functional) way is to go to Lowe's and by some ThermoKing insulation. it is self adhesive and foil backed and works well on doors. Cover the entire outside door panel and inside door panel. Its way cheaper than standard audio deadening material. I used it in my Vette with great success and will be using it in the new Serra when I get around to it.

SierraLeone · September 8, 2007

I do not have the problem, but I have a suggestion for fixing it. It would be a big help if you had an engineering degree in acoustics, but barring that you might try putting in some sound deadening high-density foam. They carry it at retailers that sell high-end vehicle audio systems, the kind where guys like to boost up the bass and rock all the cars stopped at an intersection. I am thinking that Crutchfield's may have it. It is peel-and-stick, I would apply liberally inside the speaker recess area.

I was thinking somewere along those lines, but will that really stop the resonance if the whole door is not covered with it?

I was thinking maybe a speaker baffle and then some 10by10 sound deadning sheets around the speaker.

Would stuffing the doors with polyfill do anything to help increase acoustics?

A speaker baffle may be the solution, but then again, those are typically tuned and the wrong one or insufficient clearance for it can be problematic. You really do not need to cover the entire door, just the parts that are interacting with the sound pressure wave.

Forget filling the door--as was pointed out, you have windows in there. Also, fill rarely helps with deadening, you ned to add mass to the vibrating surface.

dmw2692004 · September 8, 2007

Stuffing the doors would probably interfere with the windows.
Sound deadening is what you need. A ceaper (and more importantly, functional) way is to go to Lowe's and by some ThermoKing insulation. it is self adhesive and foil backed and works well on doors. Cover the entire outside door panel and inside door panel. Its way cheaper than standard audio deadening material. I used it in my Vette with great success and will be using it in the new Serra when I get around to it.

I think im going to go to lowes and pick up that insulation. How much does it normally cost?

I checked lowes online just not and they dont seem to have it in my area. I am going to give them a call and see what else they have, but if they dont have it, what properties does the ThermoKing have so i can look around at toher brands.