Switching two circuits on/off with loop active all the time? TB or buffered

[B_of_H]

Does anyone know how I could wire a 3dpt or 4dpt to activate two circuits with one LED while keeping an effects loop active all the time between the two circuits? 

Input>circuit>send/recieve>circuit>output

?

[jkokura]

I think what you're asking for is impossible. I'm not as familiar with 4PDT switches, but I can't think of a way to wire a 3PDT that way.

Jacob

[anchovie]

What are the circuits? If they have high input impedance, true bypass won't really be necessary.

[earthtonesaudio]

...If your always-on loop contains some sort of buffer, true bypass is not only unnecessary but impossible.  So you could use a SPDT to select between Return or Circuit 2, and similarly if both the Circuit 1 and Send inputs are high impedance, you could potentially just leave both connected to Input all the time, and use another SPDT to select whether Circuit 1 or Input goes to Send.  That leaves a third SPDT for an LED.

[B_of_H]

How about this?




(i gooped it just to make sure I didn't offend anyone here, they are a bufferless TS, a voodoo labs OD and a buffered half man and half horse   )

[sjaltenb]

without having time to really examine your design, im thinking it is the same thing that i recently had to do.

i had two S/Rs that i wanted to flip flop on or off while leaving an effect on in the middle. I also watned to be able to bypass both. so (a or b on/off) and (a or b)

I ended up having to use four dpdt relays to do it, so im guessing that is what you are doing. I dont think it is possible with a single switch.

[B_of_H]

without having time to really examine your design, im thinking it is the same thing that i recently had to do.

i had two S/Rs that i wanted to flip flop on or off while leaving an effect on in the middle. I also watned to be able to bypass both. so (a or b on/off) and (a or b)

I ended up having to use four dpdt relays to do it, so im guessing that is what you are doing. I dont think it is possible with a single switch.

I guess my question is whether you can use a 4pdt like two dpdt's side by side?

this is a charity project emulating mike houser's guitar rig essentially (slo with volume pedal and delay in the loop).  The loop has to be active all the time and in the specific order I have here.  I'd rather not use relays.  

[earthtonesaudio]