Wiring 1/4 jack for reverb on off

[überfuzz]

I'm a bit puzzled... How do I wire a 1/4 jack if I want to have this functionality:

Jack unplugged : reverb OFF
Jack plugged foot-switch off : reverb OFF
Jack plugged foot-switch on : reverb ON

I have a mono jack with a plug-switch, see reverbjack.pdf and a circuit that can be killed by ground on/off.

[überfuzz]

Mhm... Seems the wiring was hunky dory. The issue was a 2.2 Ohm resistor where the schematics calls for 2.2 MOhm.

[Richard]

A Fender style reverb grounds the signal to kill the reverb. If you use a normalled jack and ground the tip when it it not used you should get what you want although the switch will be closed to kill reverb.

[Enzo]

Kinda doesn't matter whether the switch has to be on or off. Either way, it will wind up push-on, then push-off. Wire the jack as Richard suggest, then a one button stomp will do the trick.

[Chuck H]

The only way to make "Jack unplugged : reverb OFF" would be to use a shorting jack. Pretty much a switching jack but it just defaults to a short across the terminals when not in use. Fender used them for the main speaker jack. Commonly available.

I don't see why this is necessary. With the standard mono jack if the jack isn't plugged in you can always just turn the reverb all the way down. Or to whatever level you like. When you need the footswitch it will still turn the reverb on and off because the footswitch creates the short.

[Enzo]

I do agree. The project as specified is simple enough. And if you want no reverb, fine.

The practical problem is that you need the pedal for reverb. And that means if you want reverb at some point and don't have the pedal, or the pedal fails, then you can't turn on the reverb.

[überfuzz]

All plausible points. The hardware was already there, but a bit funky. The jack is 'spick and span' now.

Edit, I see that I posted this thread in the wrong place... Sry!