18 replies to this topic

[siknis]

does anyone know roughly how much dynamat i would need to do my car. its a 2 door BMW E36.

i intend to start at the boot (entire boot). then work forwards under the rear seats and then under the front seats (basicly the whole floor from the boot to the kicks)

a little bit in the doors(speakers are going to be in the kicks so no need) then SD in the kicks and im done.

yes i know this is a sh!t load of SD but i hate road noise and rattles

im looking at buying somthing like the 36sq ft. bulk pack, would this be enough or should i order more
if i order what i need at once i will probably be able to get a better deal

also, any idea on rough weight per sq ft.

thanks for any help guys

[Jack88]

no idea mate but at a gues the dynamat door kit should be sufficient (1 kit per door i think).someone else mite be able to clarifly better.

[SirNemesis]

1 bulk pack did my boot. I think you'll need a bit more

[Pulse-R]

Dynamat Extreme is I think about 200g per sq. ft.
( just weighing up by memory)

the doors shouldn't need much if you're not putting woofers in there - just the outer skin would do it. but you'll need to do the insides of the kicks, and the boot/parcel shelf if you put a sub in there.

a fully s.d'd door weighs about 3 to 5kg more than usual.

[siknis]

ok thanks,

yeah, not much in the doors, i dont think i'll bother sealing it up or anything. every available surfuce in the boot will the done

going off that, im looking at 2 bulk packs or more

any more imput?

cheers guys

[joelus]

well get one pack and go from there.

You can always get more.

If you have heaps left over you could always resell on here, people always on the lookout for SD im sure.

Cheers Joel

Edited by joelus, 30 June 2006 - 12:25 AM.

[Ruger3]

i went through 2 bulk packs and 3 extra sheets doing a bootlid, every inch of the boot and under the parcel shelf and inner and outer skin of 2 front doors in a BA falcon i reckon youll need about 3 bulk packs.
also think of doing the roof! gets rid of the tinny sound when its raining.

[~thematt~]

Doing your panels with SD is a great Idea, it has so far taken me 2 bulk packs to do my doors (fully on front and one sheet on back) and the boot (mines a hatch). Roof is also a good idea.

As for the floor, no reason why you cant, but the floor of a car is rated fairly thick, and very weighty. Adding SD to this will do SFA difference to lowering resonance. Best bet here is to add XtremeLiner, or Dynaliner to simply deaden the road noise. Ive got 2. Added to that, some companies have asphalt based paints (Stinger I think is one) that you can coat your wheel-wells in. That should make a heap of difference as well (as does choosing different tyres).

2 door coupes should take a whole bulk pack alone, with another for the boot. Grab a third for the roof and the smaller panels you didnt do with the first two. Xtreme Liner on the floor and the forward footwells, and you'll swear you're riding in a coffin

[Juls]

Doors completely deadened and sealed 15-17 sq ft Per Door.
unsealed Door 10sq ft per door.

Boot, 60-100 SQ Feet

Floor 30-70 sq ft

Roof 30-50 sq ft

Entire Car, 200-300 SQ Feet

Utes normally need about 100-150sq ft,
Sedans 150-300sq ft.

But this is "complete" and proper deadening.
not just a bit here and there.. I mean everything.

It works out rather expensive if you want to do it with dynamat extreme.

I tend to do the important surfaces with dynamat, and the not so important surfaces with a cheaper product.

If your being scant, you can SD a sedan with 100-150 sq feet. you will get great results, and going the extra 150 sq ft really is only neccessary for pure SQ systems or SPL.

by the time I finished SD My BA Falcon Ute I had used 190 SQ Ft of deadener.
but then I also did my tray and front guards too which was a extra 30-40sq ft.

When I'm deadening I use the Knock Test.
I apply 1 layer, then I knock the panel in a few locations if i can hear any resonance at any freq, I apply another layer. then knock test again, until I remove ALL resonances from that particular panel.
Depending on the car, large open panels may need as much as 3 layers in places to be 100% effective.
it depends alot of the quality of the metals and thickness, example a mazda 121 door needs more deadening per panel than say a Rolls Royce Fantom.. (well the fantom doesn't need it at all, but for examples sake) since the 121 has super thin panels.

Juls

Edited by Juls, 30 June 2006 - 12:37 PM.

[maderia]

let me know how you go mate..

I drive a E36 coupe as well. I have already sound deadening the bootlid, now planning to do the the foot well for the front speakers to improve the mid-bass.

As you aware, the factory speakers are 5"1/4 - it lacks mid-bass compare as it locates in the kicks.

I'm thinking to get the wedge pack, it should be enough for me

Cheers

[siknis]

maderia, on Jul 2 2006, 06:28 AM, said:

let me know how you go mate..

I drive a E36 coupe as well. I have already sound deadening the bootlid, now planning to do the the foot well for the front speakers to improve the mid-bass.

As you aware, the factory speakers are 5"1/4 - it lacks mid-bass compare as it locates in the kicks.

I'm thinking to get the wedge pack, it should be enough for me

Cheers

will do,

yeah the fronts do lack midbass, but stock 4" rears arn't half bad for paper cones
6" will fit in the stock kicks, the location shouldnt be that bad for bass. i intend to leave them there but make some fibreglass kicks to house either 6" or 7" speakers and aim them up a little to try raise the front stage.

im also thinking a 3 way setup with 7" kicks 3" in doors and tweets in the pillars or general area. im a bit unsure what to do...

i went shopping today, no bulk packs available so i bought 3 boot packs which is 60sq. ft total.

then 2 packs of some random brand road noise deadner, thats for the floor. they have orderd in more SD and i will pick it up if need be.

[driv3R]

I have gone through 3 bulk packs (36sq ft each) and a trunk kit (20 sq ft each) in my EL xr6 and i still havn't lined the roof. However, almost every sq inch is covered from the firewall back.

I dont think it is possible to deaden too much is it?

[siknis]

well i doubt you can deaden too much, but your car might start getting a bit heavy
how much noise have you cut out, any vibrations or much road noise?

well i picked up my system today, i might start a thread in installations, its going to be so very sweet

[driv3R]

Yeah, i have cut out most of the road noise... just wind noise mainly now. I would say it has a fair bit less road noise than a brand new Xr6, (test drove one bout a month ago) and they are pretty quiet. and im running no resonator on my exhaust either.