4 pin footswitch

[Bombacaototal]

Just wondering if anyone knows the mouser part number of the male plug to the 4pin XLR style footswitch.

I bought the following but unfortunately it does not fit:
https://www.mouser.co.uk/ProductDetail/ ... cycode=GBP

[erwin_ve]

That is is the C4F from switchcraft; according to their spec sheets you need a AA series connector; AA4M or AA4F, https://www.mouser.co.uk/ProductDetail/ ... 52BAhzc%3D

[Bombacaototal]

That is is the C4F from switchcraft; according to their spec sheets you need a AA series connector; AA4M or AA4F, https://www.mouser.co.uk/ProductDetail/ ... 52BAhzc%3D

Awesome Erwin!! Many thanks.

I just went back through my orders and this was my original female part, C4F indeed
https://www.mouser.co.uk/ProductDetail/ ... cycode=GBP

This should do the job, but 10 weeks lead time
https://www.mouser.co.uk/ProductDetail/ ... d6ZZVvE%3D

This A series one should be ok
https://www.mouser.co.uk/ProductDetail/ ... FXWw%3D%3D

[erwin_ve]

That is is the C4F from switchcraft; according to their spec sheets you need a AA series connector; AA4M or AA4F, https://www.mouser.co.uk/ProductDetail/ ... 52BAhzc%3D

Awesome Erwin!! Many thanks.

I just went back through my orders and this was my original female part, C4F indeed
https://www.mouser.co.uk/ProductDetail/ ... cycode=GBP

This should do the job, but 10 weeks lead time
https://www.mouser.co.uk/ProductDetail/ ... d6ZZVvE%3D

This A series one should be ok
https://www.mouser.co.uk/ProductDetail/ ... FXWw%3D%3D

Edit: never mind, make sure you got a male version!

[Bombacaototal]

The male XLR arrived.

On the amp female side I have wired my reverb to PIN 4, which is meant to ground the exit of the control "SEND".

My footswitch male side is wired with red to ground and white to PIN 4. I measured the PIN 4 and I get 002.1 ohms and nothing in either footswitch positions.

I measured the PIN 4 from the female XLR and I get about 55K and 0 Volts. If I ground it with alligator clips it kills the reverb, but if I use the footswitch the reverb is always present.

It looks to me, based on the alligator clip experiment, that the wiring on the female is good,but I am puzzled why the footswitch is not working. Any ideas??

[Richard1001]

Your wiring the reverb transformer secondary to ground, this should be the output of the reverb tank i think. And then you will also need a shielded cable.

[Bombacaototal]

Your wiring the reverb transformer secondary to ground, this should be the output of the reverb tank i think. And then you will also need a shielded cable.

Hi Richard, no I'm am grounding after the send pot and before the reverb driver, like Dumble. I prefer doing there then after the tank

[sluckey]

You must use a shielded cable. And use a dedicated ground wire on the chassis socket shell.

[Richard1001]

Ah, i see. I got confused reading about a 2.1 ohm to ground resistance.

I see in the picture that you wire pin 4 of the female plug to ground with An alligator clip connected somewhere to ground. To test the female side, i think the right test would be connecting a wire between pin 4 and pin 1. Just to check if pin 1 of the female plug is grounded.

[Bombacaototal]

Ah, i see. I got confused reading about a 2.1 ohm to ground resistance.

I see in the picture that you wire pin 4 of the female plug to ground with An alligator clip connected somewhere to ground. To test the female side, i think the right test would be connecting a wire between pin 4 and pin 1. Just to check if pin 1 of the female plug is grounded.

Hi Richard, I think you found my issue, thanks a lot for the help. On the female side, you are correct, I wired PIN 4 to the reverb send (dwell) pot output. On the picture in the previous post I added a "dummy" hook up cable to do the tests, as my probe was too thick. With my "dummy" red hook up cable, by using an alligator clip, when I connect the allogator clip to ground (in my case I used one of the toggle switches) the reverb stopped, which is what I want. On my female jack I only have 2 things wired, the PIN 4 and the ground point. My PIN 1 is not wired to anything, and by readig your post I understand I should wire it to the ground point, correct!?

EDIT: as far as the 2.1 ohm reading, it was when I was testing the pedal itself, with the probe connected on one side to the male PIN 4 and the other to the jack metal itself

[Bombacaototal]

You must use a shielded cable. And use a dedicated ground wire on the chassis socket shell.

Hi Steve, I actually have my send (dwell) pot at the back, just behind the reverb driver socket and next to the jack. I find this is a much better design, and I just need two small cable runs, far from any other circutry, and no need for a coax cable.

As far as the chassis female socket, I have indeed grounded it, but funny enough, I was checking Two Rock 2017 amps and they do not ground the female socket anywhere

[Richard1001]

As far as the chassis female socket, I have indeed grounded it, but funny enough, I was checking Two Rock 2017 amps and they do not ground the female socket anywhere

The socket itself is grounded, beeing bolted on to the chassis. On the plug one could use outside metal housing as well.

Glad you fixed the problem!

[Bombacaototal]

As far as the chassis female socket, I have indeed grounded it, but funny enough, I was checking Two Rock 2017 amps and they do not ground the female socket anywhere

The socket itself is grounded, beeing bolted on to the chassis. On the plug one could use outside metal housing as well.

Glad you fixed the problem!

Got it, thanks.

I will try grounding PIN1 and will report back

[Richard1001]

You need to wire pin 1 to ground and wire the plug that way also. Using just the metal housing of the plug and socket is possible, but only if you are positive that there is a good connection. Normaly on 3 pole xlr plugs the ground is on 1 or (1 and 3 when used with 2 conductors)
The groundlug of the plug is only hooked up to shield the plug, not for a connection.

[Bombacaototal]

You need to wire pin 1 to ground and wire the plug that way also. Using just the metal housing of the plug and socket is possible, but only if you are positive that there is a good connection. Normaly on 3 pole xlr plugs the ground is on 1 or (1 and 3 when used with 2 conductors)
The groundlug of the plug is only hooked up to shield the plug, not for a connection.

Hi Richard, I am going to try the fix now. On the male side, I should the connect the PIN 1 to the ground point I am touching with the screw driver, correct? I think this grounds to the housing of the plug. What other options would I have?