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Audio potentiometer replacement
drummerdimitri:
It's a scratchy pot since if I put upward pressure while increasing the volume, the scratchiness goes away.
I found that the ALPS "blue" pot to be a worthy replacement as it is used in most mid-tier Hi-Fi equipment.
Not sure if I need it to be linear or log. Any thoughts on that?
sam[PS]:
For volume control the standard is using log pots, that's the reason why lot manufacturer call log pot "audio" pot. That's not the only solution but in doubt it's the safe bet.
Just my 2cts ...
SiliconWizard:
--- Quote from: pqass on May 06, 2020, 09:54:33 pm ---If audio-taper log pots are hard to find/expensive maybe you could substitute a linear-taper with a loading resistor at its output to produce a log-ish curve.
see: http://sound-au.com/project01.htm#s1
--- End quote ---
I also recommend this. There was a past thread dealing with this already.
The resulting curve is usually good enough for audio purposes, and as I already mentioned earlier, there is an added benefit IME. The loading resistor allows to discharge static charge that tends to build up at the wiper - so that avoids the potential scratching sounds.
OTOH, you need to consider the resulting input impedance and see if it can fit your requirements. Just my 2 cents.
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