Combined A/B/Y and channel switch

[ESPm2M]

Hi all, it's been a while, I hope everyone is well.

I want to wire up a custom switch that will both switch a signal path on/off and change the channel on my Mesa head.  My goal is to be able to enable the signal path of a second amp while on the distorted channel of my Mesa so as to fatten my distorted sound (obviously there are other ways to achieve this, but I  have the second amp laying around). FYI, the second amp is a single channel high gain amp that is pretty useless for clean sounds.

How can I wire up a single switch for this? I have a Morley A/B/Y that I can mod (perhaps with a 4PDT on the A/B switch?), but I'm not exactly sure how to do this.

Any thoughts?

[The Tone God]

Those Morley ABYs are passive and therefore can't drive two loads at once. You have to go active. I designed a simple active splitter circuit and PCB that retro-fits the Morley ABY. I've done numours upgrades for clients whom have all been happy with the conversion.

I don't know much about Mesa channel switching to comment. Maybe fit the active board and a 3PDT with another jack to control the amp.

Andrew

[ESPm2M]

Thank you Andrew. I'll look into an active design.  if you have any further comments or ideas they are more than welcome.

[d95err]

I'm building a similar box, but I'm using a simpler approach. I'm using a separate switch for the channel, but I put it close enough to the other switches to enable pushing both at the same time.

This gives virtually unlimited possibilities to combine sounds. Since I shape my sound mainly with stompboxes, I use the channel switching only as a solo boost, using more or less clean settings for both channels on my Peavey Classic 30.

My box is a passive 2 loop box, where I can select loop A or loop B (not both) or bypass. One switch for bypass, one switch for A/B and in the middle the channel switch.