What type of deadener?

[grimreper912003 5,000+ posts]

Well after serching the products I was interested I still have some open questions. Im interested in using SS Spectrum. Im going to cover the hatch, the doors, and floor pan. My question is, would I be better off using a aluminum backed deadener. If I do use a mat deadener, I would have to use adiffrent brand, probably Raamat BXI.

Will the Spectrum help reduce vibrations in my doors, and increase mid bass response? I will cover all large wholes with plexi-glass. If I could I would use damplifer pro, but its a little more then what I have right now.

Maybe I should do 1 gallon of Spectrum for the floor pan, and enought damplifier to do the doors, would that work better?

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[grimreper912003 5,000+ posts]

my main goals here are to get better midbass responce and to make the bass less audible outside the car.

 

[nauc 10+ year member]

id try.. http://www.secondskinaudio.com/forums/

i use the Damp Pro myself, love it

 

[FoxPro5 5,000+ posts]

I haven't seen damping loss figures on either SS product, but mat-type products work better on naturally stiffer surfaces vs something like a free-layer damper (Spectrum) which does better on more flexible surfaces.

The best midbass response will undoubtedly come from making a proper baffle for your door-mounted mids. Using deadening products gets tricky as they all have their own ideal acoustic properties, install requirements, use-ability, etc.

Randomly applying "deadening" products and following the pack on these forums will probably get you avg results at best, IME. I happen to be a big fan of proper planning and understanding of how these products work before they are used - and I suggest that the results you achieve will highly reflect how much you've done your homework.

Disclosure: I've used every one of the possible candidates you're looking into purchasing and am not endorsing any of them. Just trying to help with understanding their usefulness.

 

[Hydrastas 10+ year member]

peanut butter smear covered with banana peels aluminum foil finished with duct tape.

 

[FoxPro5 5,000+ posts]

make the bass less audible outside the car.

Best bet is to put deadening mat on all large panels that resonate in the 50-250 hz range. This means door skins, roof, rear seat bucket, truck lid, etc.

In order to absorb bass frequencies (say 100 hz and below) you're going to need use thicker and thicker absorption materials as you go down the frequency range. This is not feasible in most cars. So, you're back to the above: focusing on reducing vibration conduction of sound by changing the RF of the surface.

 

[FoxPro5 5,000+ posts]

peanut butter smear covered with banana peels aluminum foil finished with duct tape.

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