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The original was posted on /r/hometheater by /u/MadDog00312 on 2024-01-23 00:25:47+00:00.
Hi all, I have a new project that I’d like some suggestions on:
My spouse wants me to build some floor to ceiling bookshelves into the back wall of our dedicated theater space, (16 foot wide and 12 foot ceiling) and I got the idea of potentially putting an array of unpowered subwoofers (likely 6-12 drivers in total) underneath the bookshelves.
As I’m limited by the depth of the bookshelves, the subwoofers have to fit in a depth of 12-13 inches tops. I doubt I can get away with more than 18-20 inches of height as I’ll need space for the isolation pucks/pads and two layers of 3/4 inch plywood for the base of the bookshelves.
To try to isolate the subwoofer enclosures from the bookshelves, I figure I would use isolation pads between each enclosure on every side but the front, so the only contact between subwoofer and bookshelves are the isolation pads.
I also think doubling up the base of each bookshelf and using green glue on all seams as well as isolation pads around the bookshelves would likely be sufficient to stop them from vibrating.
I did some back of napkin math, and figure that each 3 foot section of bookshelf will weigh 120 pounds empty and probably 300-400 pounds if they are totally full of books.
Does anyone have any advice or suggestions I should consider?
Here’s a couple of items I’m not sure on that I’ve already identified:
- sealed or vented subs? I already have 4 Arendal 1723 2S subs, so I’m not hurting for bass, but I want IMPACT and air movement.
2). Driver size? I might be able to fit 15 inch drivers, but should I look at a larger number of 12 inch drivers?
3). Amplification: I have a 6 channel Buckeye amp I’d use to power the array. It can run ~300 watts a channel into 4 ohms all day long.
4). Am I nuts to think I can isolate the vibration enough? I think it’s possible, without doing plan B which is making a concrete slab frame for the subwoofers to go into?
Any advice is appreciated!