09-08-2015, 02:44 PM
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#9 (permalink)
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Base Member
Join Date: Apr 2015
Location: Kali
Posts: 54
Drives: 12 370z
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Quote:
Originally Posted by mishuko
as Ark said you need to get the towers both sides and the centre piece as well. i'd also try and get into the wheel well as deep as you can get it. also the inner side of the trunk is nice and flat but has a big hollow noise.
i think you will get closer to the 5db reduction mark if you did a single layer over the entire thing and a double layer over the wheel wells but i can't back that up with tests.
the one thing to remember though is the dynamat/hushmat will not sound proof, it will only reduce the noise levels a little bit. my biggest notice is the road noise from the tires + the rock 'pings' from the underside. if you want to really reduce the noise you need to go the whole 9 yards.
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The shock towers were solid metal and not paper thin 1/16" of an inch like the wheel wells and the bottom of the trunk. I got the wheel wells with two layers on the front and the back. On top of the factory material as well as some surrounding areas...
I'd like to see if someone actually got measurements of sound reductions. It is easy enough to go back and add more, but I don't want to waste time and add unnecessary weight. Covering the entire trunk etc is not wise just for the sake of covering it doesn't make sense.
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