Tone Stack Switch... Loading Problem??

[pompeiisneaks]

Basically anywhere there's going to be current flowing, if you don't give it a path to 'close the circuit' which means to ground, it builds up some charge between when the switch contact breaks from the one side and when the switch contact connects to the other, there's a small 'arc' that causes the pop.

The fix is a resistor to ground that gives that current somewhere to go while the switch is mid switching. The thing you do NOT want is an easy path to for the signal to go to ground when the switch is connected. This is why a pretty high value resistor is preferred, like 4.7M or even higher 10M etc.

This gives a very low leakage current meaning 99.99% of the signal goes through the closed switch, and then a tiny amount through the resistor, until you switch, and for that second (or less) when the switch is not 'connected' to something, nothing builds up, and then you get no pop. You still need to fully understand why the pop is happening on your amp, but likely a very high meg resistor to ground would resolve it as well.

~Phil

[diddymix]

Phil! Thanks!!! This is awesome I think I undertsnad better,,, so it gives the built up charge somewhere to go when switching.. I think ill try it on my amps switch on every tube input first, thats 2 more 4.7m resistors, n see if that gets it.. really appreciate the info.