It won’t beat true stereo imaging separated by 7 feet apart on the wall.
But I do recall that it sounded good and superior to a “mono” speaker. I think it’s worth it as the circuit is very simple. There was a phantom center image and pan left right works well enough. Not as precise as true stereo. But to be expected.
But I do recall that it sounded good and superior to a “mono” speaker. I think it’s worth it as the circuit is very simple. There was a phantom center image and pan left right works well enough. Not as precise as true stereo. But to be expected.
Or the six driver wth three on the front, one each on the left and right sides, and one on the back in the middle as a bipole of the middle front.
Question about the matrixing that I am still having some confusion around...
Is the layout simply Left-Mono-Right or is it more complex? For example Left = Left minus Right to extract the common contents leaving only the unique content for each channel?
I've just trying to determine if I can do this with 3 or 4 channels of amplification and DSP.
Is the layout simply Left-Mono-Right or is it more complex? For example Left = Left minus Right to extract the common contents leaving only the unique content for each channel?
I've just trying to determine if I can do this with 3 or 4 channels of amplification and DSP.
If I understand right, it's left-mono-right as:
(left minus 100% right)-(mono)-(right minus 100% left) for the four driver version, and
(left minus 50% right)-(mono)-(right minus 50% left) for the three driver version
So it seems like you could do either with three channels, as long as you have two inputs into the dsp and three outputs, but I've never used dsp for anything.
The wirings
https://www.diyaudio.com/community/attachments/matrix03-jpg.421445/
https://www.diyaudio.com/community/attachments/matrix02-jpg.421444/
(left minus 100% right)-(mono)-(right minus 100% left) for the four driver version, and
(left minus 50% right)-(mono)-(right minus 50% left) for the three driver version
So it seems like you could do either with three channels, as long as you have two inputs into the dsp and three outputs, but I've never used dsp for anything.
The wirings
https://www.diyaudio.com/community/attachments/matrix03-jpg.421445/
https://www.diyaudio.com/community/attachments/matrix02-jpg.421444/
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Too late to edit this, maybe not the best layout.
https://www.diyaudio.com/community/threads/thoughts-about-single-box-stereo.383290/post-6958968
You should check out Elias’ write up on this. Lots of details there. The matrix also has a high pass filter for the mixing that has variable knob to dial in the value for “x” (the fraction for the mixing).
http://elias.altervista.org/html/SingleSpeakerStereo.html
Maybe Elias can chime in…
http://elias.altervista.org/html/SingleSpeakerStereo.html
Maybe Elias can chime in…
The matrix approach is good, but is still dependent somewhat on the room and placement. It won't just sound "stereo" wherever you put it. That and the amp problems.
This and much more discussed here; https://www.diyaudio.com/community/threads/thoughts-about-single-box-stereo.383290/
A number of good ideas planned, but it has ground to a halt a little. Busy lives!
This and much more discussed here; https://www.diyaudio.com/community/threads/thoughts-about-single-box-stereo.383290/
A number of good ideas planned, but it has ground to a halt a little. Busy lives!
What about an approach like this one: A stereo pair built into a single enclosure, both channels being separated by a wall. This will diffusely spray some airyness into the room for everyone at any place. And if you instead approach your nose to the separating interchannel wall, then you will be overwhelmed by the precision of a never-heard-before stereo soundstage.
Try this with your regular speakers and a door you have handy to see if it suits your needs. If you then construct such a system for good, the drivers might be close to the interchannelwall in order to minimize reflextions artefacts. And if you like it fancy, then a sanded plexiglass wall looks gorgeous.
Try this with your regular speakers and a door you have handy to see if it suits your needs. If you then construct such a system for good, the drivers might be close to the interchannelwall in order to minimize reflextions artefacts. And if you like it fancy, then a sanded plexiglass wall looks gorgeous.