Selector Switch Pop - Newbie Question

[LHMAudio]

I have searched the forum, but cannot find an answer to my problem.

I wired up a three way Goldpoint stereo selector switch to select the source for my power amp. The switch is break before make and I am switching both the signal and ground wires.

My problem is I get a loud pop when I switch from one source to another. I'm sure if I tied the grounds together that would solve my problem, but I have read that switching both the signal and ground is the proper way to do a selector switch.

Any help is greatly appreciated.

Lindsay

 

[Trebla]

I think it's more usual to have a "make before break" type for this application. Someone correct me if i'm wrong.

 

[LHMAudio]

The Goldpoint distributor insisted that a selector switch should be break before make. I had asked for make before break and they do not have that type of selector switch.

 

[Wavebourn]

If it pops you have some DC on it. Shunt it's output to ground by a resistor, it should help. And be sure your signal sources has no DC on outputs. Also, I would not switch ground wires.

 

[LHMAudio]

Thanks Wavebourn. What value resistor should I use for the shunt to ground?

I've appreciated reading your posts on the John Curl Thread.

Lindsay

 

[Wavebourn]

Thanks Wavebourn. What value resistor should I use for the shunt to ground?

I've appreciated reading your posts on the John Curl Thread.

Thanks!

As soon as the majority of modern equipment have around 100K inputs I assume 470K will add inaudible losses.