Switching Audio Signals?

[Lewham5115]

I have a project where I will have two guitar pedal effects circuits in the same project enclosure and I would like to be able to turn each one on independently of eachother, but also to change their order in the signal chain, in addition to being able to have them both in series or parallel.

So something like

In - - Effect A - - Effect B - - Out
In - - Effect B - - Effect A - - Out
In - - Effect A - - Out
      - Effect B -


With four switches, one to turn each effect on and off, one to change between series and parallel order, and one to reverse order of the circuits when they are in series.


But I'm struggling to wrap my head around how to achieve this. Having the series/parallel switch is what's really messing with me.

Can this be achieved with mechanical switches? 4000 series logic? Do I need some sort of microprocessor to control relays?

Any help would be greatly appreciated.

[Andy Chee]

4066 analog switches would've been my goto device for this application. 

But maybe there's a modern device people use nowadays?

[magic]

IMO it would be almost OK to have the following switches, which could be simply mechanical:

Select A-in between In and B-out (SPDT)
Select B-in between In and A-out (SPDT).
Enable mixing A-out into Out (SPST). (I presume that mixing is what you mean by "parallel effects".)
Enable mixing B-out into Out (SPST).

One disadvantage of this is that it becomes possible to run the two effects in a loop, disconnected from the input. Hell knows what will happen then, but likely nothing good

[gcewing]

3-position 3-pole rotary switch.
Two of the poles select the input source of each effect (circuit input or the output of the other effect).
The third pole selects the output (effect A, effect B, or both through summing resistors).

	A input	B input	Output
A->B	In	A	B
B->A	B	In	A
Parallel	In	In	A+B