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Comments
Such pots were common on hi fi and other audio systems and intended to correct for less than symmetrical speaker placement (or sometimes different speakers!).
Yes, one pot is a regular log track the other anti log. Note that a 500k pot will insert a serious amount of "tone sucking" resistance into the circuit but maybe HF loss is no so much an issue with a bass?
Dave.
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
I don't know about the Warwick circuitry but in the general application the balance control inserts about 6dB loss per channel because there is a contribution from two speakers. (see Duggie Self's Audio Circuits for the full SP on pan pot laws and balance controls.)
I could be wrong but I don't see how this can work in a passive circuit and give zero loss and a low output Z?
Dave.
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
The volume stays consistent throughout the turn because the volume on one pickup falls while the other rises. When it's at the centre, each pickup is at half volume. (Assuming the pickups are adjusted so they're same volume individually!)
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
That will work, but I find a blend control easier to use and a more 'elegant' solution. If you're going to fit two pots you might as well make one of them a blend if that's what you want.
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
Works great cheaper and easier to repair too.