interesting. another forum says do not start a new thread for the same device. different strokes folks. the only confusion is keeping the trends straight :loco
otherwise Im pretty good with discernment. probably bench the amp this weekend and practice with the pot connections as small and delicate as they are on PCBs.
but knowledge of operation flow wouldnt hurt.
I see that AUTOMIX plug lifts CT GND off of Q2 base turning it ON that turns Q1 ON.
must be sending + voltage to either FS-2 or FS-3 through FS-1 to operate the CMOS switches ? this is what is confusing to me. the switches, CMOS and foot :loco
pretty straight forward after signal hits U5A then its OP amp to hop amp til it gets to the power amp stage. goes through two driver/phase inverter IQ1 and IQ2. one is getting inverted signal from OT secondary. then 6L6GC pp output :duh
PS: at the same time AUTOMIX Q1 ON is sending bias voltage to U2 that beefs-up the signal from U1A while U4 is OFF...
hmmm... more thinking. maybe Q2 is sending CT GND to FS-2 or FS-3 through Foot Switch. U2 does the combining while foot switch connects FS-1 GND to either FS-2 or FS-3 turning each OFF/ON
otherwise Im pretty good with discernment. probably bench the amp this weekend and practice with the pot connections as small and delicate as they are on PCBs.
but knowledge of operation flow wouldnt hurt.
I see that AUTOMIX plug lifts CT GND off of Q2 base turning it ON that turns Q1 ON.
must be sending + voltage to either FS-2 or FS-3 through FS-1 to operate the CMOS switches ? this is what is confusing to me. the switches, CMOS and foot :loco
pretty straight forward after signal hits U5A then its OP amp to hop amp til it gets to the power amp stage. goes through two driver/phase inverter IQ1 and IQ2. one is getting inverted signal from OT secondary. then 6L6GC pp output :duh
PS: at the same time AUTOMIX Q1 ON is sending bias voltage to U2 that beefs-up the signal from U1A while U4 is OFF...
hmmm... more thinking. maybe Q2 is sending CT GND to FS-2 or FS-3 through Foot Switch. U2 does the combining while foot switch connects FS-1 GND to either FS-2 or FS-3 turning each OFF/ON