Sassmaster

iTrader: (2)

ok, here's the deal, I'm planning to cut out a part of the rear deck on my lancer, and fire a 12" sub facing up, with up to 1200 RMS running through it. I'm also planning to use lexan to separate the sub from the trunk, since there won't be any obstruction between the sub and the cabin, I'm thinking that 1/4" lexan will be sufficient to separate the sub and the trunk, but still show the sub.

anyone have any thoughts?

(BTW, I already have the 1/4" lexan )

SQ Civic

iTrader: (3)

if you could double it up, to make a 1/2" section, thats what I would do, if you have enough. I would be worried that 1/4" would flex too much, and vibrate and rattle like crazy...

Mark

Sassmaster

iTrader: (2)

if it was part of the box, I'd totally go with the 1/2" (I may be able to get some of that free too ) but I'm thinking that since there'll be no pressure, and it'll be supported well on every side, and not be that big (10" x 22" or so) I figure I can get away with the thinner stuff...

loudtdi

iTrader: (1)

Lexan is super tough, but in sheet format it flexes about as much as the same thickness of MDF. I would use the same thickness of lexan as I would MDF. In your case 1/2" to 3/4" would be good.

SQ Civic

iTrader: (3)

double it up... if you can get it for free (1/4") then why not... especially since you're only using a small piece of it..

mark

Brad-S.A.

iTrader: (35)

Doing this might cause it to chatter together and buzz and make all kinds of noise. Go 1/2 or better. I would go 3/4" if you can find it.

SQ Civic

iTrader: (3)

Doing this might cause it to chatter together and buzz and make all kinds of noise. Go 1/2 or better. I would go 3/4" if you can find it. </font>[/QUOTE]Whne I said double it up, I implied that CA glue should be layered in between, so you wouldn't have that problem...

Mark

SUX 2BU

iTrader: (1)

I'm having a little trouble understanding this. So you want to run your sub IB, hanging from the rear deck, yet you want to isolate the sub from the trunk? Not from the cabin? Traditional IB designs are to isolate the trunk, which acts as your sub 'box' from the cabin.

Will the sub be in it's own box or be in an IB setup? If the lexan will be any part of an enclosure wall subjected to pressure, 1/4" will flex. Lexan isn't as rigid as acrylic so it could flex even more. If the flex does not bother you, do the 1/4".

Sassmaster

iTrader: (2)

The sub won't be IB, it'll be in a sealed box, firing upwards through a hold cut in the rear deck. the lexan will simply isolate the sub from the trunk, and provide protection for the sub from anything inside the trunk. it will in no way be a part of the subwoofer box.

zzzzzzz

iTrader: (5)

SINGLE-VENTED BAND-PASS
("4th Order Band-Pass")
The single-vented band pass is one of the best designs for the car. It is basically a "compromise" design between a sealed and vented box with a good compromise in performance and reliability. Probably the best type of enclosure for most applications.

Advantages: small box volumes, extended low frequency performance, and can be used with very high power amplifiers.

Disadvantages: slight drops in efficiency compared to a vented box and increased box design and construction complexity.

http://homepage.ntlworld.com/intrelu.../boxtheory.htm

is that what you are trying to do or do i not see someing