Hoffman Amplifiers Tube Amplifier Forum
Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: dude on April 14, 2020, 02:30:01 pm
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This is pretty much a normal thing with amps with a standby switch, turning off the SB, (using as a mute switch) usually with cause a pop. SB switches aren't meant to be a mute switch, anyway. The more l read about SB switches, they aren't needed. Abruptly turning off the high voltage an amp will pop, a normal thing l understand but would a say 600v .047 cap between the rectifier and the standby stop the pop?
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A 100K/3W resistor across the standby switch contacts works pretty good.
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I always put .0047mfd or 0.01 mfd across SB switch contacts. it work.
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Just rewire it as a real mute circuit (ground the signal somewhere late in the circuit, like just before the PI).