Fatmat Behind Door Speakers?

[RickInIndy]

Since this is my first post I'd like to say hi. My nick pretty well sums up my name and location. I just bought a 95 Explorer XLT four door with 104k on it. The first order of business was to replace the stock stereo (base model). I chose a Alpine HU since I had very good luck with my last one, an Alpine one channel amp for an Alpine 12" sub in a sealed enclosure. For the door speakers, I chose Infinity Kappa 5.25 components for the front and 5x7's for the rear. I have a four channel Infinity amp driving them.

Anyhow, I am in the later parts of the install. I chose to gut the interior except driver seat to install the fatmat sound deadener. I am receiving it tomorrow so i thought this would be a good time to ask. The rear door speakers mount onto the stock bracket that mounts to the doors. When I put the fatmat on, should I stick it on the door metal behind the speaker bracket? I ask this because there are some holes there that if needed, would allow the speaker more air space. Am I supposed to cover them up with fatmat behind the speaker of leave them open? Also, should I stuff some insulation inside the bracket before installing the speaker?

One more thing, anyone have any ideas of where to mount the front tweeters?

 

[Saleen_SR71]

from what i heard fatmat doesnt do its job, a buddy of mine bought some and ended up buying another deadener and told me fatmat was a waste of money.

FYI a good site that sells good sound deadener (equal or better in quality than dynamat).... www.secondskinaudio.com

as for the tweeter, you could mount it in the door pannel in the upper right pannel, you coudl mount it next to the speaker, or you could even mount it in the dash near the side window defrosting vent

 

[Bangin01Sport]

I can't speak for fatmat's success -- I've never used it nor heard a review on it.

I'll agree that Second Skin Audio is a top notch deadener manufacturer.

I'm not sure what you are saying about the holes in question. Are these holes in the metal behind the rear panel? If so, yes, these should be covered. Ideally, the front and back waves should be 100% isolated. Sound deadening does a great job of doing this, increasing midrange/midbass response as well as clearing up any muddy discoloration of the sound.

 

[BeauJ]

I used fatmat in my doors and dynamat/uranthane foam in the back/roof. The fatmat worked good for me. Never had any rattling from the subs or bass from the 6.5s.

 

[Saleen_SR71]

i only get rattiling in my truck because the rear door/window is flexing and the headliner... well it shakes a lot but i dont hear any noise coming from it, but i dont think your system is going to be as extreme as mine is

p.s. second skin is having a sale (think its 75% off) on one of their products because of overstock

 

[cgmiller83]

So Rick do you use the Fatman or go with something else?