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Old 3rd October 2012, 12:24 PM   #31
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Join Date: Jun 2008
Location: Bangkok/London

Thanks Colin, I haven't seen that design; is it german? Here's a rough render of the sub/coffee table. Wd probably need to isolate the top from the main cabinet. I'd put the 2.1 plate amp on the underside with the woofer so then have to move the controls off the amp and mount them somewhere. Also want to add an iPod dock with dac

Last edited by Bill poster; 3rd October 2012 at 12:39 PM.
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Old 3rd October 2012, 12:41 PM   #32
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Location: Melbourne
Sorry to "rain on your parade" but you're going to meet some difficulties trying to mate up that omni directional speaker to any sort of subwoofer located in a coffee table that's Xed over at 150Hz, particularly with a 2.1 plate amp - neat little design tho.
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Old 3rd October 2012, 12:58 PM   #33
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Thanks for the compliment. Yes thats an issue with the Dayton, a fixed high pass of 150 hz(2nd order). I would have thought that the actual x/o point is lower( where the 2 slopes meet) and can be adjusted down to 120hz or more?
The Keiga 2.1 has adjustable hi/lo pass.

Last edited by Bill poster; 3rd October 2012 at 01:00 PM.
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Old 3rd October 2012, 03:54 PM   #34
Colin is offline Colin  United Kingdom
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XAMP-M1 and M2 used in combination will be more flexible and give you variable crossover points

Audio Amps/Crossovers : Xkitz Electronics, Electronic Kits, Fun Educational Electronic Projects

I believe some AV receivers have adjustable roll off for the subwoofer outputs.
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Old 31st July 2016, 05:22 PM   #35
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Location: Amsterdam
Default Reflector shape

Originally Posted by Bill poster View Post
Attachment 304494

Here's a quick rendering of a design I'm working on (need to adjust the shape a bit) for a 2.1 system using full range drivers/sub with active plate amp. The sub(not shown) will be sealed and can be used as a coffee table.
Bit late, but you may want to change your reflector shape from hyperbolic (curved) to conical (straight). This was studied by the German magazine Hobby Hifi 3/2011 (still available on back order). The reflected SPL of the conical shape looks (= sounds) rather bad.

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