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Room extension subwoofer enclosure?

3047 Views 9 Replies 4 Participants Last post by  bpape
Hey guys,

I do a lot of lurking, but this is my first question. Should be an easy one for you guys. Hope this hasn't been covered before.

I've included a diagram, hopefully, to make this easier to understand.

I want to get my subwoofer out of my main home theater area. I want to build a small (3x3x3) insulated box behind the screen wall, in an attic area, big enough to hold a subwoofer enclosure. NOTE: this box will NOT be the subwoofer enclosure, just a box to protect the actual subwoofer from attic temps. It's, basically, just a small addition to the main room space with the sheet rock removed and a speaker grill covering the removed sheet rock.

My question is how do I calculate the size the sheetrock cutout needs to be? I don't want to restrict airflow, but I only have ~16" between the bottom of the screen and floor.


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The sub you choose will determine the size the sheetrock cutout needs to be. Do you have a sub or will you be building one?
It should accommodate the Audiosource if you lay it on its side. As for future upgrades, that will depend if you have access to the "room" from the back side, as a larger sub won't fit through the front access. Usually ugrading means something larger, a point to consider. A DIY sub can be built to fire through the 12" x 30" opening.
Ideally, you really don't want to do what you're suggesting. Any time you put a sub or any other speaker back in a recessed 'tunnel' like that, you're going to completely change the frequecy response and cause all kinds of resonances that you really don't want.

Bryan
As long as the sub is flush with the opening it should work, I think?
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