DIY Center Speaker Design - Home Theater Forum and Systems - HomeTheaterShack.com

 
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post #1 of 7 Old 04-11-07, 02:34 PM
jeromero
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DIY Center Speaker Design

I'm new to this forum and I hope I'm posting to the right place.

My question relates to Home theater and in particular to the design of enclosures. Here is the "problem", I want to build a center speaker that can be "fitted" behind a flat screen TV. the TV is not mounted on the wall so I can move the TV away from the wall a few inches. I wonder if any thoughts to building the enclosure as in the drawing, so it can be mounted in the wall behind the TV and the drivers only showing above the TV.

The drivers I envision would be like parts express 264-815 (3 " mids)and 264-834 (tweeter), similar to the "cyanosure" DIY posted in parts express' website.

any thoughts? Full of it? stick to other design?
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post #2 of 7 Old 04-12-07, 04:29 PM
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Re: DIY Center Speaker Design

That's a pretty interesting concept. There might be some baffle step issues due to the change in size and the orientation of the drivers. I'm not the expert on crossover design though. Are you going to design the crossover or just use the one for the cynosure?
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post #3 of 7 Old 04-13-07, 12:53 PM
jeromero
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Re: DIY Center Speaker Design

Quote:
kano32 wrote: View Post
That's a pretty interesting concept. There might be some baffle step issues due to the change in size and the orientation of the drivers. I'm not the expert on crossover design though. Are you going to design the crossover or just use the one for the cynosure?
I'll try the one posted in the cynosure intially.
post #4 of 7 Old 04-17-07, 08:27 PM
hardman
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Re: DIY Center Speaker Design

To answer your question, I don’t really see any issue with changing the placement of the drivers as long as you keep the box internal dimensions the same. It doesn’t look like the crossover is doing any BSC anyway. If you placed the original design on top of your TV it would be about the same as the box you are suggesting anyway (the TV screen acts as a baffle).

How big is your TV? I ask because you may be happier with just a normal MTM center channel speaker.

I can not really comment on the crossover design as I have not heard this speaker, but it is rather interesting. I have often contemplated a similar speaker array center channel. However, if I were to do such a design I would use a ribbon for the tweeter (ribbons have very good horizontal dispersion) and larger drivers for the woofers (4.5” to 5” more bass). The crossover point would be a derivative of the speed of sound divided by woofer center to center spacing.
post #5 of 7 Old 04-18-07, 09:40 AM
jeromero
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Re: DIY Center Speaker Design

Quote:
hardman wrote: View Post
To answer your question, I don’t really see any issue with changing the placement of the drivers as long as you keep the box internal dimensions the same. It doesn’t look like the crossover is doing any BSC anyway. If you placed the original design on top of your TV it would be about the same as the box you are suggesting anyway (the TV screen acts as a baffle).

How big is your TV? I ask because you may be happier with just a normal MTM center channel speaker.

I can not really comment on the crossover design as I have not heard this speaker, but it is rather interesting. I have often contemplated a similar speaker array center channel. However, if I were to do such a design I would use a ribbon for the tweeter (ribbons have very good horizontal dispersion) and larger drivers for the woofers (4.5” to 5” more bass). The crossover point would be a derivative of the speed of sound divided by woofer center to center spacing.

Thanks for the comments and sugestion,

the TV is a sharp LC42D62U
post #6 of 7 Old 04-18-07, 06:44 PM
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Re: DIY Center Speaker Design

Here is a company that takes what I think your idea is one step further;

http://www.dstechlabs.com/sound/plasmaud.htm

He's local to S. Florida, and I have had a chance to work with him, and is fairly knowledgeable.

Paul
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post #7 of 7 Old 04-19-07, 02:16 PM
jeromero
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Re: DIY Center Speaker Design

Quote:
aceinc wrote: View Post
Here is a company that takes what I think your idea is one step further;

http://www.dstechlabs.com/sound/plasmaud.htm

He's local to S. Florida, and I have had a chance to work with him, and is fairly knowledgeable.

Paul
Thanks, I knew someone else would have thought of this before.
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