So, I've now built two operational JCM 800 preamps that I think turned out awesome with help from here!
My question is, could I put the 1M input resistor on a switch so I could change from high impedance to low impedance so I could use the preamp as an unbalanced mic preamp?
I plan to use XLR/TRS jack for the input if so.
Would putting the 1M input resistor on a switch with a 500-Ohm resistor work? With the switch I could swap between 1M and 500-Ohm, use the 1M for guitar and the 500-Ohm for dynamic mics? I've attached the preamp schematic I've used for both of my builds.
My question is, could I put the 1M input resistor on a switch so I could change from high impedance to low impedance so I could use the preamp as an unbalanced mic preamp?
I plan to use XLR/TRS jack for the input if so.
Would putting the 1M input resistor on a switch with a 500-Ohm resistor work? With the switch I could swap between 1M and 500-Ohm, use the 1M for guitar and the 500-Ohm for dynamic mics? I've attached the preamp schematic I've used for both of my builds.