Hi all,
I am trying to build a box to switch between my sound card (connected to a MAC, MAC is grounded) and my guitar AMP (grounded too)
I am using a DPDT and I've connected it as the following schema indicates.
It generates humming, so I am not sure whether I should try to ground it or I've read as well trying to use a 3PDT.
Any ideas of what solution can get rid of that humming?
Thanks
I am trying to build a box to switch between my sound card (connected to a MAC, MAC is grounded) and my guitar AMP (grounded too)
I am using a DPDT and I've connected it as the following schema indicates.
It generates humming, so I am not sure whether I should try to ground it or I've read as well trying to use a 3PDT.
Any ideas of what solution can get rid of that humming?
Thanks
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