Speaker Placement? - Page 2 - Home Theater Forum and Systems - HomeTheaterShack.com

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post #11 of 12 Old 04-27-10, 10:07 AM
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Re: Speaker Placement?

Ultimately, embedding them in your wall is going to change the way they sound. The engineer(s) would have designed the speaker to be free standing. They would have taken into account how the sound interacts with the speakers surface and a room to some degree. They were not engineered to put in a wall. Most speakers also sound a little better when brought out a few feet from the walls (SBIR).

You will in effect be building a chamber for the speaker that will resonate and constructively/destructively interact with the frequencies emitted by your speakers. Figure too that if you have a concrete foundation wall behind your speaker it will be highly reflective. The entire wall cavity could resonate also if there isn't anything stuffed between the studs. You might find that during higher volume use that the wall buzzes or rattles and that the sound travels up the wall into other rooms.

How much of an effect enclosing your speakers is a bit of a guess right now, but it will certainly be an audible one. If you do decide to go ahead and do it then I would pad the chambers with rockwool or fiberglass board insulation as recommended before. Basically the chamber should be a bass trap so that it absorbs rather than reflects (eg: 4" or more OC703 surrounding the inside of the box). Ideally you would also want to decouple the chamber/box from the wall. Make sure the box itself is very sturdy (glue and screw) so that it doesn't rattle.
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post #12 of 12 Old 04-27-10, 10:11 PM Thread Starter
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Re: Speaker Placement?

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MatrixDweller wrote: View Post
Ultimately, embedding them in your wall is going to change the way they sound. The engineer(s) would have designed the speaker to be free standing. They would have taken into account how the sound interacts with the speakers surface and a room to some degree. They were not engineered to put in a wall. Most speakers also sound a little better when brought out a few feet from the walls (SBIR).

You will in effect be building a chamber for the speaker that will resonate and constructively/destructively interact with the frequencies emitted by your speakers. Figure too that if you have a concrete foundation wall behind your speaker it will be highly reflective. The entire wall cavity could resonate also if there isn't anything stuffed between the studs. You might find that during higher volume use that the wall buzzes or rattles and that the sound travels up the wall into other rooms.

How much of an effect enclosing your speakers is a bit of a guess right now, but it will certainly be an audible one. If you do decide to go ahead and do it then I would pad the chambers with rockwool or fiberglass board insulation as recommended before. Basically the chamber should be a bass trap so that it absorbs rather than reflects (eg: 4" or more OC703 surrounding the inside of the box). Ideally you would also want to decouple the chamber/box from the wall. Make sure the box itself is very sturdy (glue and screw) so that it doesn't rattle.


Thankyou for the advice i will not be putting them in the wall. the mains are 1 foot from the side and back wall. I cant move it in any further due to the screen size. Cheers
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