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View Full Version : Custom fiberglass box volume? (pictures)



sTaLa
05-11-2006, 10:26 PM
I almost finished my fiberglass box. I'll put a 12" Infinity sub in there and it needs a sealed enclosure of 1'... but the box is way too big!!! I thought I could fill the space with some foam (you know the kind that takes a lot of expansion once it is in contact with air), but I'll need something like 10 cans of them.

My questions are: 1. Is it that bad if the volume is bigger? 2. If it is, do you have any suggestions of any material I could use?

I've been working on it for something like 3 weeks, I'm eager to finish it!

http://www.rx7club.com/attachment.php?attachmentid=173863

http://www.rx7club.com/attachment.php?attachmentid=174330

ssj2xxgotenxx
05-11-2006, 10:28 PM
Links don't work.

req
05-11-2006, 10:31 PM
um its not bad perse. but it might not sound the best.



um. yea you must have made that box like, WAAAy to **** large.

vosschs
05-11-2006, 10:32 PM
links doont work for me either

sTaLa
05-11-2006, 10:32 PM
Strange... they work for me... Anyway, you can go on that link, it'll be very easy to find the pictures.

http://www.rx7club.com/showthread.php?t=534467&page=2

sTaLa
05-11-2006, 10:35 PM
um. yea you must have made that box like, WAAAy to **** large.

My first priority was to make it fit the car nicely since I don't really have any trunk. I thought I could manage something with the volume.

req
05-11-2006, 10:35 PM
LOL dude

thats a huge box. looks like 2 or 3 cubes!!!

you could fit like 3 subs in there, maybe four lol.

yea, expandable foam is your best bet dude *shrug*

sTaLa
05-11-2006, 10:39 PM
It's also my first try with the making of sub enclosure AND fiberglass. I think the foam will absorb some of the sub's bass... but that s**t doesn't expande like it should... 3 times bigger my ***.

spaz0055
05-11-2006, 10:57 PM
lol, just stuff a few pillows in there, maybe 3 or 4, who knows lol

sTaLa
05-11-2006, 11:13 PM
lol, just stuff a few pillows in there, maybe 3 or 4, who knows lol

Well, I'm not so sure: they will keep moisture and they're not really compact (they contain air also), so they will not reduce the volume as effectivly as foam would... maybe I'm wrong though.

PepsiFiend69
05-11-2006, 11:16 PM
why dont you try putting an MDF wall within the enclosure to cut down its inner volume? just make sure its sealed up real good.

sTaLa
05-11-2006, 11:27 PM
I thought about it, but I'd have to make 2 pieces of MDF (one big enough will not pass through the sub hole) and join them IN the enclosure. After that I'd have to seal them together and on the enclosure. I don't think it's worth the trouble...

Mmm, it's sad to say, but I think my best option is the foam :(

j3bus2k3
05-12-2006, 12:09 AM
Why not reduce it for a 10" sub and port it? Or just finish it, sell it and build a new one...

MrSector9
05-12-2006, 12:14 AM
4x4 pieces work pretty good, screw them to the inside.

Maybe use the foam and then resin it so it is completely solid on the outside. Try this first on some foam out of the box incase it has adverse affect.

box looks good though

SQBubble
05-12-2006, 12:15 AM
Why not reduce it for a 10" sub and port it? Or just finish it, sell it and build a new one...

x2

orrr ur best bet would be:


get a 12" thats built for that kind of sealed enclosure!!!

vorgath
05-12-2006, 11:38 PM
My 1042W requires 0.75 cubic for a sealed enclosure, 1.75 for a ported one, so for a 12 it should be (considering it's 1 cubic for a 12) probably something like 2 cubic foot maybe ?

vorgath
05-12-2006, 11:43 PM
Sorry for the double/tripple whatever post, guys. **** cox/comp combo messed up

req
05-13-2006, 12:16 AM
btw - foam will NOT absorb any bass dude. if anything it will deaden the inside of the box and create less resonances.

how about you just fill it with foam the right way. wood will be way to hard to work right.