setting up a switch to act like this:

[cedric]

the idea is to have a bypass-LOOP switch that,
when switched OFF won't let any of your signal go to the pedal(s) in the LOOP.
EXCEPT it'll let the sounds of the pedals in the LOOP (eg. noise, self. oscillations etc..) come through.

and when ON it'll act like a normalsignal router.
routing your signal to the pedals in the LOOP.

bascially NOT shorting the LOOP effects (ie. 'send fx' and 'return fx' to ground, when bypassed.

shold be possible with a DPDT right?
EHX did it at one point didn't they?

- ced

[RickL]

Wouldn't a spst do that? 'On' connects the guitar to the effects, 'Off' disconnects the guitar but still leaves the output of the effects connected to the amp.

[cedric]

perhaps. i'm not sure.
wouldn't it make a lot of unwanted noise when OFF then?

but a drawing/schem would be cool

- ced

[Ge_Whiz]

I guess it all depends how much noise, and what kind, you want to come through the chain when the guitar is disconnected. As an alternative to the SPST, leaving the input 'floating', a SPDT (or one-half of a DPDT) could be used to select input between guitar and earth. Centre (common) to effects chain input, one outer pole to guitar output, other pole to earth.

Er, why do you want to do this? Then we might understand your needs better.

[cedric]

yes. let me explain.

i'm building a "modular pedal", consisting of various stuff in one big box.

two of the switches should/shall be able to choose either to go:
1) into an analog delay, and make it self oscillate or..
2) bypass the analog delay (input), and only be able to hear the output (ie. the self osc.)

preferrably by using a DPDT/3PDT (as i need LED status as well).

clear enough? or blurry as hell?

- ced