Have a crazy idea

[tsenfw 10+ year member]

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?

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[wu501 10+ year member]

not gonna work....

 

[yunvme666 10+ year member]

cut some wide 45s and put them in the corners....

 

[tsenfw 10+ year member]

not gonna work....

Because you tried it and it didn't work?

 

[yunvme666 10+ year member]

and you cant continue to knock volume down with wider strips over top of them? lol....it will work....

 

[tsenfw 10+ year member]

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 shitty and temp setup.

Might just give the foam a try.

 

[mlstrass 5,000+ posts]

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 10+ year member]

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 5,000+ posts]

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 10+ year member]

wouldnt certain chemicals and fumes damage the woofers?

 

[yunvme666 10+ year member]

let him do it i wanna hear the "my subs stuck in expanding foam" story....lol....

 

[Pioneer~Saturn 5,000+ posts]

let him do it i wanna hear the "my subs stuck in expanding foam" story....lol....

lawl

 

[tsenfw 10+ year member]

****it! Thought it was going to work lol

 

[sholiz 10+ year member]

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 10+ year member]

Really temporary setup, shitty 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?