The picture is a little deceiving and maybe not to scale, that area is 88" wide so the horizontal space between the center and subs would be 18" wide which should be plenty of space for the AVR, DVR and XBOX. The openings for the subwoofer would be ~ 20".
The "drawers" would actually just be a panel door or I may change it to be a glass door. I don't mind seeing electronics but for aesthetics keeping them hidden and using an IR repeater might be best. It is all still a work in progress.
I opted to build separate boxes other than build them in to isolate the subs a bit. I would have netted more enclosure volume building in, but I think I made the right choice.
I think the overwhelming opinion around here would to buiild the biggest and best you can afford. Front firing is the is the easiest solution. If you have no backs on the sub compartments and the stand is away from the wall, a rear ported design could be done. Maybe even a dual opposed. Enclosure volume may become a problem the the dual opposed though.
Thanks for linking that thread, RDK! It's huge so I will have to peruse after work. Also, congratulations on your entertainment center. It gave me a few ideas
I though about building sub enclosures and just inserting them into the cabinet, but am leaning toward a built-in solution with some less expensive 15 or 18 inch drivers. Sounds like the OP is also looking at a built-in solution.
RDK, I have been looking in that byo and yours looks awesome. For the aesthetics I'm only allowed to do the 25" tall cabinet so I'm trying to determine how to incorporate speakers, subs, electronics, etc. The DIY subs seems like a great idea and if I can make the box slide fit into the enclosure that could be pretty slick and less permanent for upgrades and moving.
If your display, optical player, amplification, et cetera are all going to be coupled to your enclosure as I think you're intending, I'd definitely put some thought into dual opposed. That way the mechanical vibrations don't go straight into all of your expensive electronics. I know, they'd probably be fine, but it definitely seems safer to avoid the extra vibrations if you can. You could go out each side or one firing forward and one backward. They could share a volume of air or be separate.
While your idea is visually appealing, it is going to be a SONIC crapshoot. The placement of the subs in the room may not yield the bass performance that you are seeking. The benefit of separate subwoofers is the ability to place them in the room to optimize their performance.
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