Turning 3-channel mixer into stereo

You could use dual pots and wire them off the PCB boards.

For extra credit you could wire a set of dual pots for panning that feed a set of dual pots for volume.
 
bechbox said:
Is there an easy way to turn two 3-channel mixer (https://www.pedalpcb.com/product/pcb605/) pcbs into a stereo mixer with one volume pot for each channel instead of two?

I could make a box with two 3-channel mixers, but then I would have to turn two knobs to change the level of one stereo channel
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Stereo jacks or just dual mono jacks?
I would consider using dual-concenteic pots. Then you can pan things.
For single knob, use a dual gang pots.
I'd go 9mm.
For dual concentric...
 
jwin615 said:
Or use dual concentric and have both options.
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I’ve had a couple of glasses of wine so bear with me… but a stereo signal… for stereo pan and stereo volume you would need a total of four pots (two dual in my example).

What does dual concentric bring to the table? I think OP wants stereo in and out, not mono in stereo out.
 
Hal Harvey said:
I’ve had a couple of glasses of wine so bear with me… but a stereo signal… for stereo pan and stereo volume you would need a total of four pots (two dual in my example).

What does dual concentric bring to the table? I think OP wants stereo in and out, not mono in stereo out.
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You wire each gang as left and right. You, locked together they will track like a single knob dual gang. But you'll also have independent control if you desire.
Left down, right up or... Inner down, outer up="pan" right. Etc.
Not true dual mono planning but you can still balance left and right.
 
jwin615 said:
You wire each gang as left and right. You, locked together they will track like a single knob dual gang. But you'll also have independent control if you desire.
Left down, right up or... Inner down, outer up="pan" right. Etc.
Not true dual mono planning but you can still balance left and right.
Click to expand...

Ahh I understand now 👍

I have two sets of PPCB splitters and mixers, I’ve used the two mixers like you describe (albeit separate pedals rather than a dual concentric control) to mix a OX Box and OX Stomp going into to my stereo board. It does work, its just not as intuitive as separate pan and volume controls would be.
 
Hal Harvey said:
Ahh I understand now 👍

I have two sets of PPCB splitters and mixers, I’ve used the two mixers like you describe (albeit separate pedals rather than a dual concentric control) to mix a OX Box and OX Stomp going into to my stereo board. It does work, its just not as intuitive as separate pan and volume controls would be.
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MN pots would also work good. But I think that's less control with the same outcome.
You can't truly pan with this setup(moving a single signal across the axis)
You just boost or attenuate one side.
True panning would be double the circuitry.

One could wire the dual concentric opposite each other as well. Turning both clockwise would attenuate one channel less and the the other channel more. It would feel like a pan pot but you have the ability to not attenuate one side fully while not attenuating the other side at all.

One cool thing to do would be to put a short delay line on only one side, let's say left, of a stereo delay/verb input. Set the short delayed signal a little lower or higher, depending on the effect desired, than the other side. With the right timing it will give the effect a left right or right left notion.
If you make it really short on a regular guitar dry signal, you'll get a thickening effect. Talking 5-25ms, depending on how far apart the cabs are
 
Thanks for the input guys! Adding a pan would certainly be a plus - great idea!

jwin615 said:
Stereo jacks or just dual mono jacks?
Click to expand...

Either will work fine. I'll use the mixer as a line mixer for a small wet-fx board in a wet/dry/wet rig with a reverb and two delays (all stereo outs)

jwin615 said:
Not true dual mono planning but you can still balance left and right.
Click to expand...

What do you mean by not "true" dual mono? Will I loose some of the stereo field by doing this?
 
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