Dumble Switching Question

[wattsup]

I know this might be sacrilege but is there a way to do the switching for the footswitch with a 1/4" jack instead of the standard? I thought I saw a Dumble like that once but don't know where I saw it.

[ampgeek]

Yes!

I have used Cliff type TRS (tip, ring, sleeve) sockets and stereo plugs for two relay switching systems many, many times including my Dumble'esq builds (OD, PAB functions).

Not sure if a greater than 2 function option using 1/4" size exists though.

Good luck,
Dave O.

[wattsup]

Yes!

I have used Cliff type TRS (tip, ring, sleeve) sockets and stereo plugs for two relay switching systems many, many times including my Dumble'esq builds (OD, PAB functions).

Not sure if a greater than 2 function option using 1/4" size exists though.

Good luck,
Dave O.

Thanks Dave O. Are there any examples of that type of wiring on here that you can point me to?

[Smitty]

If you've got everything grounded right, use a regulated relay supply with pop cap and diode you can use the number two jack hole on old Fenders with a regular Switchcraft stereo jack (grounded to the chassis).

[10thTx]

Lots of good information on relays and switching here:

http://el34world.com/Forum/index.php?topic=14348.0

Including how to use a stereo 1/4" jack for two button footswitch.

With respect, 10thtx

[ic-racer]

The Fender amp I modified to ODS circuitry had two 1/4" jacks and I used them as follows:

Jack 1 (mono isolated ground)
PAB LED POWER to jack 'ground'
PAB RELAY POWER to jack 'tip'

Jack 2 (stereo grounded)
OD LED POWER to jack 'ring'
OD RELAY POWER to jack 'tip'
GROUND to jack 'ground'

That is still the usual 5 wires. I think there are ways of doing it with less wires than 5 but I don't know it off hand.

https://tubeamparchive.com/download/file.php?id=4402

[wattsup]

Thanks 10thTx and ic-racer that's exactly the stuff I am looking for.