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So ground pin 1, connect the output of the previous stage to pin 3, and take the signal to the following stages from pin 2.
Yup. This is, as I learned, the correct way to wire up a volume control, to give you a full zero-to-infinity sweep on the knob.
I didn't understand this before, because it seemed to me that at the max-resistance end of the knob's travel, I was fully connecting the signal to ground. As opposed to just putting a lot of resistance between source and destination. It seemed to me like connecting signal to ground so directly like that would be a bad idea. But it seems to work. Clearly I don't have the electronics theory background to understand why. I guess one way to look at it is that it's like a shunt for the electrons instead of an on/off valve.
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I think it also assumes that shorting the inputs won't melt anything.
Exactly. It seemed to me that wiring all three pins like that *WAS* shorting the inputs. I guess it turns out that for a line-level volume circuit, that's exactly what you want to do.
Thanks for the help, everyone.
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