Remote A/B switch

[olddawg]

I have several project and vintage amps that are 2 channel but do not have channel switching. I know the conventional way is to have a A/B switch box that you run 3 long guitar cables to. Does anyone have a schematic for an active (preferably 9v) active switcher that you can just sit on the amp with a couple of very short cables and run one cable to it from your guitar that uses a standard footswitch to toggle the channels? I've never seen one offered commercially. Seems like it would sell to me....

[pdf64]

As long as there's a buffered pedal (eg tuner)between the guitar lead and the (passive) AB box input then the following cables shouldn't degrade the signal.
It seems to work out ok for me anyway

[g1]

Whirlwind and saturnworks both make active a/b boxes but they're not cheap. This Belcat one is about the cheapest I've seen:
Genuine Belcat Guitar Amp Switch Box ROHS Active A-B BOX ABS-521 1input, 2output | eBay

[olddawg]

I guess I wasn't clear. I didn't mean active as far as signal at all. That isn't an issue.... I meant active as far as the switching. The usual/normal way to switch channels on an old 2 input amp is to put an A/B switch after my pedal board and run two guitar cables to the amp. I'm suggesting running one guitar cable from the pedal board to a small A/B box at the amp that is switched by a standard 1/4 inch plug foot switch like modern 2 channel amps with channel switching. That way I could use my standard pedal board setup with all of my amps. I don't need a stomp box switcher.

[g1]

So I guess that would be a remote switched A/B box?
Like a relay with remote switch?

[olddawg]

So I guess that would be a remote switched A/B box?
Like a relay with remote switch?

Yeah, exactly. Something like this with the appropriate miniature SPDT relay and using a battery or a wall wort. I may be able to common ground it and just switch the signal to A or B if the channel inputs are common grounded. No need for the power supply in this.

[g1]

If you don't need isolated grounds, this is probably overkill:
Pure A/B+ Remote controlled A/B pedal from Champion Pedals; Allows you to switch between amps while keeping the cable runs short and allowing the flexability of a longer footswitch cable and better tone!

[olddawg]

If you don't need isolated grounds, this is probably overkill:
Pure A/B+ Remote controlled A/B pedal from Champion Pedals; Allows you to switch between amps while keeping the cable runs short and allowing the flexability of a longer footswitch cable and better tone!

Thanks G1 but I think I have people confused. I'm not looking for a stomp box. I guess the best way to describe it is a remote input switcher controlled by a standard foot switch and cable.

[big_teee]

Is this what you're talking about?
Single Relay Remote Locate PCB
Switching Kits
T

[Enzo]

It is still a stomp box. You just want the button remote from the function. The idea would be a common AB switch put next to the amps with short cords, the stomp switch would bo on a wire tether 20-30 feet away out front. Inside the AB box, a relay takes place of the former stomp button. The relay is then controlled from the remote stomp button.

[olddawg]

It is still a stomp box. You just want the button remote from the function. The idea would be a common AB switch put next to the amps with short cords, the stomp switch would bo on a wire tether 20-30 feet away out front. Inside the AB box, a relay takes place of the former stomp button. The relay is then controlled from the remote stomp button.

Pretty much....

[Richard]

Radial makes something similar

Radial Accessories
Radial BigShot? ABY - True Bypass Switcher

[pdf64]

Sorry but (given what I understand of your application) I still don't see what the problem is with, or what benefit any of these products would have over, a simple AB channel select stomp switch as the last item on your pedalboard?
As the length of cable in the signal path is the same whichever.

[g1]

If you don't need isolated grounds, this is probably overkill:
Pure A/B+ Remote controlled A/B pedal from Champion Pedals; Allows you to switch between amps while keeping the cable runs short and allowing the flexability of a longer footswitch cable and better tone!

Thanks G1 but I think I have people confused. I'm not looking for a stomp box. I guess the best way to describe it is a remote input switcher controlled by a standard foot switch and cable.

That link is for a unit like Enzo described. It has a jack for a remote footswitch. The A/B stomp section can stay at the amp. It is a relay type unit.

[mhuss]

What is wrong with the schematic you posted above?