Considering laying down something similar to dynamat this spring when i take out my interior and re-finishing it. I stubled upon this on jegs website


This product i was considering putting under the carpet and under the carpet in he rear.
http://www.jegs.com/p/Thermo+Tec/756779/10002/-1


And this product i was thinkin about putting in the doors, and areas the other product isnt suitabe.
http://www.jegs.com/p/Thermo+Tec/758345/10002/-1

it is 70mil so is a little thicker then dynamat

How do you guys think this will compare to dynamat, i am looking to lose vibrations and ambient noise, not so much concerned with the acoustics part of it

 

that first stuff i wouldnt use personally it looks more like underhood stuff. just use all DYNAMAT TYPE everywhere and double up in the spots needed.

Now i did a little looking around for alternates that performed at least as good as dynamat and come across EDEAD. From the reviews from people thathave used both they said it was pretty much identical to where they couldnt tell the difference.

I hav not used it yet im waiting for it to come in, but i ordered 100sq ft of EDEAD 80mil for 248 shipped i believe. Priced dynamat at 204 for 34sq ft seems like your paying for a name on that one.

They offer all different types and thicknesses from 40mil to 130mil i think to 1/2 inch foam acustic stuff. From review dont even bother with the paint/spray on stuff.

I will be doing every square inch of my FD firewall back except the roof and double on the firewall and trans tunnel. I will try to remembe to come give an update of the difference it made. But i talked to a budy that used actuall Dynamat and did everything up tp as close to the firewall as he could back and stated this.

scale of 1 to 10----- 1 being open exhaust loud 10 being lexus he went from a 2.5 to an 8 and didnt even do everything so for me the extra weight will be more than worth it if this comes out anywhere close for me.

z

 

http://www.sounddeadenershowdown.com

Look at this link, It explains everything!
Its how i decided on Damplifier Pro, great stuff!
(make sure you check out the heat section)

 

hmmm interesting results although dated 2005. alot can change in 4 years hmm i wonder if anyone has an updated one around?

z

 

There are threads like this all over the forum. There is even a sticky in the Interior/Exterior section I believe. If you find the sticky you will see a lot of different opinions on sound deadening and I'm pretty sure people experimenting on different brands too.

 

saw that thread before i have just never seen any opinions on this product i listed.

 

I haven't searched for stickies on the topic or read the review linked. But here is a company I used while I lived near their distrubution center/factory. I haven't needed sound deadening materials for some time so I don't know what's changed in the industry. I was real happy with the generic "dynamat" I got from them.

http://www.parts-express.com/wizards...TOKEN=72561946

 

The thing is, sticking almost anything with some mass to the panel will dampen noise and vibrations. The product you link to looks to be a fluffy panel of some kind and while I'm sure it works well to insulate heat, I can't imagine it will dampen stuff as well as Dynamat (or similar "heavy" panel).

I put Dynamat Xtreme in my car and even with just basic hatch and floor coverage, the change was remarkable. Then I finished covering the rest of the car (wheel wells, storage bin area, transmission tunnel, etc.) and was astonished at the difference in heat and noise. With the windows up, the car is quiet like a Cadillac. I went from having to turn the radio to "22" to hear it, to bringing it down to "14".

 

I have eDead in my car and love it. Easy to apply and does a great job. www.edesignaudio.com

 

Well I am reconsidering putting in any dampening product now. Did the calculations and say my car was at stock weight at 2700 pounds (give or take) the added 50 pounds is about a 3% loss in acceleration, not to mention the other performance disadvantages. I dont mind wind and road noise. Its an RX-7. However i am worried about all the damn sqeeks and vibrations from random interior panels and what not. Does anyone have suggestions how to fix those. I will still be gutting the car in spring to clean and possibly lay down some rubberized undercoating on the floors and rear cabin area. But while i am reassemblying everything how can i prevent rattles and other annoying noises. Dynamat is still up in the air, if i do anything i wanna do it right so if i lay a dampener down it might as well be dynamat.

 

i remember someone saying to get some stuff from home depot.. like a/c insulation or something

 

IMHO Aaron Cake is correct, just about anything with mass and stuck to the panel is gonna help. I've used Dynamat in the past and as I remember it was a little more pliable than the stuff I linked to. My naked ear couldn't tell the difference between the two. At least at the time I was buying that stuff, the generic material was much much cheaper.

I've also seen the a/c insulation thing. It seems like it would be good stuff for heat insulation and padding for under the carpet. Heck it would probably work to stop squeaks where panels meet and rub.

I have 2-3 amps (blew one, not sure if I'm going to replace it or not) a mix of 4 mids, 2 tweets and a lil sub. The trunk lid is deadened on all the flat surfaces, behind all the trunk panels, deadened my vert rear deck and the wells under the rear deck. Oh and deadened the door speaker openings...but not the whole door.

It's not a big priority, but on my "to do list" is replacing the padding under my carpet. When I do that I'll use some combination of sticky deadener paneling, an aluminum shield and padding (cause my feet are dainty and need pampering). Whether that is all-in-one product or a mix of different products will wait and see. Whatever is cost efficient and readily available.

 

Yeah you don't have to go a full 50 pounds of dynamat to get results. 100% coverage isn't necessary. Getting the larger panels mostly covered will do worlds of difference. I'd say 2 full trunk kits of Dynamat might give you full coverage in the cabin, and that is about 27 pounds or so (.68 lbs/sq. ft.). You can do spot applications on the doors and it helps out quite a bit.

I'd definitely recommend a decent brand over some cheap stuff, as it's MUCH easier to work with. The cheap stuff tends to get messy and sort of difficult to apply. We used the Tsunami dynamat equivalent at our old shop and I liked it. We then switched back over to Dynamat because our distributor switched and I really couldn't tell a difference. The Tsunami MAY be a little cheaper, but I can't recall.

 

The way I look at it, I probably put 30-40 LBs of Dynamat into the car. My laptop bag weighs nearly 20 LBs and I carry it with me wherever I go. Do I worry about that? No. Do I worry about my little cooler full of drinks and ice that probably ads another 10 LBs (OK, maybe 8?)? No.

If the car is driven on the street, trading off a few pounds for 10x the comfort is a great decision, in my opinion. The reduction in noise was worth it, but even better was the solid feeling it brought to the car and the insulation from the exhaust and transmission tunnel. Even with all the heat shields in place, the tunnel would heat up and make long drives uncomfortable.

Worst case is, I can raise the boost by 1 PSI to compensate.