Originally Posted by Busker
I assume that's double the value of a 500K ohm pot.
Does it generally make your bass sound brighter? Are they in common usage?
Also, what's the difference between audio and linear taper?
I will try to explain this in laymans terms:
When you turn your volume knob all the way up, there is no resistance from input to output, but there is a resistance from your signal to ground. So even with a pot all the way up, some of your signal will still bleed off to ground, and cause you to lose some of your brightness.
The greater the resistance, the less of your signal bleeds thru to ground, so thats why a higher value pot has a brighter tone.
When you combine resistors in parallel, their resistance decreases:
1 500K pot is 500K
2 500K pots is 250K
3 500K pots is 166.67K
and so on.
The more pots you have in your circuit (this does not apply to active tone controls), the darker your tone.
So 1M pots are generally used when you have alot of pots in your circuit.
As far as audio vs. linear
Audio taper pots are generally used for anything relating to audio, because they are perceived to have a smoother response.
Linear taper pots are generally used whenever you need the middle of the pot to be at the halfway point in the resistor.
(for example EQs and balance pots)
Some people prefer differently, but generally, you would probably want to go for an audio taper for volume, and a linear taper for tone