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View Full Version : Have a crazy idea



tsenfw
07-14-2008, 11:06 AM
Anyone ever use that expanding foam in a can stuff to reduce the volume in an enclosure?

I have a crappy temp sealed enclosure that I'm gong to use and it's way too big. Thinking about using this foam to reduce the volume if it'll stick to sides of the box and not come loose. I don't feel like using extra wood like everyone says, there has to be an easier/faster solution.

Anyone tried this?

wu501
07-14-2008, 11:13 AM
not gonna work....

yunvme666
07-14-2008, 11:15 AM
cut some wide 45s and put them in the corners....

tsenfw
07-14-2008, 11:21 AM
not gonna work....

Because you tried it and it didn't work?

yunvme666
07-14-2008, 11:23 AM
and you cant continue to knock volume down with wider strips over top of them? lol....it will work....

tsenfw
07-14-2008, 11:43 AM
and you cant continue to knock volume down with wider strips over top of them? lol....it will work....

yeah, I guess I could 45 the back two corners if that's what you meant. I'm going for like 1/4 to 1/2 volume reduction though. Don't feel like wasting the time, energy, and wood on such a ****** and temp setup.

Might just give the foam a try.

mlstrass
07-14-2008, 11:46 AM
Only issue I see is controlling how much foam you put in there, so you can determine how much volume it takes up.

Ed Lester
07-14-2008, 03:45 PM
yeah, foam has been tried. Problem is, Its not dense enough. instead of reflecting sound, it slows down the waves and propogates a new wave at a reduced rate causing unwanted harmonics. Kind of like polyfill making the box "seam" larger.

lilmaniac2
07-14-2008, 03:47 PM
yeah, foam has been tried. Problem is, Its not dense enough. instead of reflecting sound, it slows down the waves and propogates a new wave at a reduced rate causing unwanted harmonics. Kind of like polyfill making the box "seam" larger.

truf

pjvoc
07-14-2008, 04:03 PM
wouldnt certain chemicals and fumes damage the woofers?

yunvme666
07-14-2008, 04:06 PM
let him do it i wanna hear the "my subs stuck in expanding foam" story....lol....

Pioneer~Saturn
07-14-2008, 05:31 PM
let him do it i wanna hear the "my subs stuck in expanding foam" story....lol....

lawl

tsenfw
07-14-2008, 08:32 PM
****it! Thought it was going to work lol

sholiz
07-14-2008, 11:55 PM
can make pretty large 45's ... can set angles different too to account for woofer depth cut 2 more pieces for in between those and get it nice and tight if you're good w/ tablesaw... glue it all down, glass it over once, and you can take as much space as you want.

tsenfw
07-15-2008, 12:20 AM
Really temporary setup, ****** box, probably better off just building a new one but I'm lazy. Also, how would I fit the 45's through a sub cutout?

sholiz
07-15-2008, 04:22 AM
very carefully?

808_bass
07-15-2008, 04:43 AM
Really temporary setup, ****** box, probably better off just building a new one but I'm lazy. Also, how would I fit the 45's through a sub cutout?

uuuhh....put them in sideways or angled then stand them up?????:confused:

req
07-15-2008, 07:55 AM
cut the back of the box off and put a new piece of wood there. :duh:


put a guide on the table saw for like 5" or whatever, cut, turn box, cut, turn box, cut, turn box, ect. until the back half falls off. new piece of wood + glue + new carpet = new box.