View Full Version : Dynamat Extreme
chiefsilverback
31-01-2006, 12:28
I know I'm not installing it in a SEAT, but I'll probably get far more info on here so...
I'm going to install some new front speakers into the Trophy this weekend and I'm thinking about sound deadening, but I only want to do enough to kill any unsavoury rattles that could be caused from the woofers attaching directly to the plastic door trim!!!
Would a piece of Dynamat Extreme on the back face of the door cards be sufficient, or do I need to do more than that? I'm keen to keep it to a minimum, so as not to add too much weight.....
warren_cox
31-01-2006, 12:41
I'm sure Pete will be able to shed more light than I can, but when I sent my last Leon off to have a 'professional' install (thats what they called it), at Oxford Car Audio, they removed the internal door skin and dynamatted over the entire internal metal door skin (covering all the internal metal frame).
They did put a large square of mat on the outer door skin first, but the weight of all the dynamat on all 4 doors, boot floor pan and under rear seat must have been excessive.
chiefsilverback
31-01-2006, 12:49
I have posted a similar thread on ICECavern, but Pete is busy and I figured I'd open it up to more than one person....
I don't want to do the entire outer door skin, but I'm thinking some on the plastic trim could really help in killing any vibrations caused by the woofers mounted directly to the plastic!?!?
Apparently the Inifity Kappa's have quite punchy bass and I don't want to have the associated rattle of flimsy plastic....
warren_cox
31-01-2006, 13:07
by matting my interior door skins it meant that when the trim panel sat against it was also sat against the matting, pressing it tighter against the metal panelling.
Any dynamat will help, but used strategically will have greater benefit than randomly placed snippets of it. Try and work out by tapping the door skin which bits are likely to rattle/vibrate more.
Icecavern
31-01-2006, 13:21
I have posted a similar thread on ICECavern, but Pete is busy and I figured I'd open it up to more than one person....
I'm not the only person on ICECavern you know :whistle:
and I've been busy at work for a change ;) ;)
chiefsilverback
31-01-2006, 14:16
I'm not the only person on ICECavern you know :whistle:
Not the only one, but certainly one of the more active.... ;)
stuart_hatch
31-01-2006, 14:28
I tried to do this on my toledo, but dam door skins are rivited on, no way was i drilling those out!
Im sure if you want to keep the weight down, just putting some directly behind the speaker will make a differnce
I put some on my door cards as well and plan on sticking some acoustic foam on the door cards in an attempt to make them nice and quiet.
Icecavern
31-01-2006, 16:05
I tried to do this on my toledo, but dam door skins are rivited on, no way was i drilling those out!
Riveted on? The door skin is bolted to the car, it's just the speakers that are riveted on surely?
chiefsilverback
31-01-2006, 16:40
I've just purchased 2 custom packs for £20 each on e-bay...
stuart_hatch
31-01-2006, 16:45
Riveted on? The door skin is bolted to the car, it's just the speakers that are riveted on surely?
Really? either my car is differnt or the person who did my sounds is talkin pish
I have 5 rolls of brown bread sound deadening if you want some really good stuff
Icecavern
31-01-2006, 17:01
Dynamat Extreme is far better than brown bread though ;)
Is that proven or just prefference
Icecavern
31-01-2006, 19:54
Experience
You need to sound deaden as much of the panel as you can, as its the panel that flex's and rattle's, which is what the sound proofing stops.
I used to have a fiesta, and did he whole door panels, and the boot. Never got round to fitting it in the reas to of the car.
In my mates cossie, i talked him into soundproofing it, and he's grateful, did everything on the cossie, everywhere. Even spent 20 minutes with my arm stuck in the boot lid, while trying to get right to the corners.
For a cheaper alternative to the brown bread and Dynamat, you can use roofing felt from B&Q , and wickes etc..... not the ones with the gravel, just the smooth stuff. It works too!!
Icecavern
31-01-2006, 20:11
Flashing tape ( the stuff you get from B&Q ) is NOT the same thing and doesn't work the same. You could get a similar result to one layer of dynamat extreme with about 3 or 4 layers of flashing tape. Only thing is it would weigh a hell of a lot more and you'd have spent the same amount on it.
Pete
stuart_hatch
31-01-2006, 20:43
I have 5 rolls of brown bread sound deadening if you want some really good stuff
ill have some
check out the link mate http://www.seatcupra.net/forums/showthread.php?t=78319