How? Through what device/cable?
Sorry for not replying earlier. Our mains are all fed from the xlr out on the mixer. Some of our subs are fed from an unbalanced RCA output to xlr and others are fed through a crossover. I am thinking that it is an issue with cabling because some of the cables are unbalanced, but it also hums in the amps that use balanced xlr.
Chop the earth pin off your laptop power lead. Lots of power supplies link AC earth to DC negative, hence the laptop chassis. This basically creates an antenna surrounding hard disks, high frequency processors. So yeah chop the earth off. Not really a problem on a double insulated supply.Sent from my iPhone using Tapatalk
Nope. Bad to do, irresponsible to suggest.OP has not seen fit to reply with requested information in the last 10 weeks. Perhaps just ignoring the problem made it go away...
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