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Old 21st April 2002, 08:11 AM   #1
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Default guitar pots.

i don't like how the volume knob on my guitar goes from off to really loud in the first quarter turn of the pot and the rest of the way increases the volume only slightly. did that make any sense? anyways, is there anyway to make that pot more... linear ? throw some resistors in there? buy a better (or different) pot?
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Old 21st April 2002, 10:46 AM   #2
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Hrmmm, sounds like you have a linear taper pot instead of the usual log taper one, but this would be VERY rare... if this is the case, you can replace the pot with a logarithmic one of the same value or "convert" the linear pot to a "log-antilog" one like Rod Elliot describes on the "better volume control" project ( http://sound.westhost.com/project01.htm ).
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Old 21st April 2002, 12:53 PM   #3
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in addition to using a log pot, may i also suggest you consider using a multiturn pot as they allow finer adjustment of the volume for a given rotation.
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Old 21st April 2002, 06:38 PM   #4
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thanks for the link.
i think i want the pot to be sensitive, just equally sensitive throughout the whole turn, that way i can go from quit to loud easily with my pinky and do neat volume swells and sound like a violin sometimes.

the first idea on that page looks promising, but i don't know if guitar pickups are high or low impedance.


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Old 22nd April 2002, 02:21 AM   #5
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also, the quasi-log pot on Rod Elliot's website has a pretty low linear region so you wont keep the log transfer function for a great deal of the pot's total rotation.
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Old 22nd April 2002, 02:52 AM   #6
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At last, a topic on which I can contribute!

Some guitar makers use linear taper pots, for reasons I don't understand. Because human hearing is logarithmic, this causes the "first 1/4 turn covers most of the range" syndrome. You can substitute a log or audio taper pot and have a saner response to changes in the control.

Most guitar volume pots are 250K or 500K ohms; the higher value is for guitars with humbucking or overwound pickups, the 250K works best with single coil pickups.

I hope someone finds this of use.
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