Adding a circuit selector and control with foowswitch

[bzblues]

Hello everyone!

I have this guitar amplifier that I've added a tremolo circuit. I manage to add a DPDT switch to select between the clean signal (goes straight to the amp circuit) or the tremolo circuit (goes to the tremolo and then to the amp)

So, there is a way of replacing the DPDT switch for a female 1/4 inch jack that I can connect a footswitch to turn on and off the tremolo circuit ... or to select between the clean guitar signal and the signal with tremolo. I've been researching but is a bit confusing.

What would you guys recommend?

Thank you!

[loudthud]

Worst case you could just replace the DPDT switch with a DPDT relay, then switch the relay with the footswitch. You would need a source of DC Voltage, usually 5V obtained from the heater supply. Does the amp make any click or other undesirable sound when you engage the switch ?

The other way to accomplish switching is to just disable the LFO ( Low Frequency Oscillator ) much like Fender did in their Blackface amps. This leaves the element that changes the gain of the guitar signal in the circuit at all times.

[loudthud]

Found this old thread where I show a way to make a 5V power supply for relays without adding a transformer to your amp.

Link: https://music-electronics-forum.com/...v-relay-supply