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Posted by Sonic_c on Dec-02-2009 00:56:

Humming in output leads?

my soundcard has LR 1/4 jack outputs which I have split into two to run a headphone amp on.

but im gettin a humming in the speakers which does stop if you kick the wires in the right place, clearly an earth problem but how would you troubleshoot that?

Do i remove earth wires or something? someone suggested that.

Cheers

Posted by RoBDaWG on Dec-02-2009 01:17:

It's possible they are too close to power wires, sometimes when those touch the RCA cables that happens.

Also you may want to try a ground loop isolator.

Posted by Storyteller on Dec-02-2009 09:06:

I wouldn't recommend a ground loop isolator, that damages the audio signal. Are you working on a laptop? Often disconnecting the ground of the laptop fixes the problem without any further issues.