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Old 3rd January 2011, 08:51 PM   #1
graygem is offline graygem  United States
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Default Mono to Dual Channel convert

I have the circuit below but would like to just use single gang pot and split the mono after it. Any help is appreciated.


http://i984.photobucket.com/albums/a...aygem/HTLL.jpg
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Old 3rd January 2011, 11:06 PM   #2
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What is that supposed to do? If the pot is as drawn, you will get virtually no output regardless of setting, since the signal gets grounded before it goes to the output.

I am wondering what possible use this could be.
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Old 4th January 2011, 12:04 PM   #3
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A very small hand warmer?

A single pot with the wiper feeding 2 10K Rs each feeding the amp inputs is what you are after. Where did you get that circuit?

Actually, all you have to do is parallel the inputs.

Last edited by Bill Fuss; 4th January 2011 at 12:07 PM.
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Old 4th January 2011, 03:28 PM   #4
graygem is offline graygem  United States
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My mistake in drawing. The wipers are not the grounded pins.
Here's the corrected one. Thanks.

http://i984.photobucket.com/albums/a...ygem/HTLL2.jpg
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Last edited by graygem; 4th January 2011 at 03:40 PM.
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Old 4th January 2011, 08:26 PM   #5
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Why not something like this?
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File Type: jpg mono_stereo.jpg (32.5 KB, 50 views)
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Old 5th January 2011, 04:42 PM   #6
graygem is offline graygem  United States
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Would this do the job? The output is going directly into a NJM2073 amp. The input is coming from some kind of preamp. I cut down the r9 resistor to 470 because of the paralleled r9/r10. I don't know if I would have to do anything to the caps and res after the pot. Again, any and all help is appreciated.
Thanks.
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File Type: jpg HT LL2.jpg (140.5 KB, 42 views)
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Old 5th January 2011, 05:18 PM   #7
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The wiper should be your output, not input. And the 4.7k voltage dividers aren't necessary.
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Old 7th January 2011, 02:57 PM   #8
graygem is offline graygem  United States
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Ok, here is my full schematic along with the proposed changes that were suggested. Thank you all.

http://i984.photobucket.com/albums/a...chemScanSm.jpg
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