Guest Jecklin Posted August 31, 2017 Share Posted August 31, 2017 This is driving me mad. My set up is not conventional so I'm aware this may be a little off the radar for most. Here we go.... I run two condenser microphones clipped onto my Contrabassoon into a little beringher mixer (providing phantom power) through my effects chain (EHX freeze and pitch fork) into a philjones double4. Great. And I get an earth hum. If I touch any metal in the chain the hum reduces massively. If I run a line out from the mixer into my audio interface to record I get no hum on that channel. If I remove the pedals the hum is still there. If I plug a bass into the double 4 instead, there is no hum. So... There is some interaction between the double4. I used to use one microphone and a Joe meek Q3 and got hum from that as well. The double4 runs on a wall wart so too the Joe meek and the mixer. Would you imagine that there is not adequate earthing? Is there a way to add earthing short of clipping Some wire from metal onto me? Any help gladly received. Cheers Thomas Quote Link to comment Share on other sites More sharing options...
Guest Jecklin Posted August 31, 2017 Share Posted August 31, 2017 Ok it seems this problem is widely reported from double 4 users. I need the newer 3prong UK earthed power supply. Time to give synergie a shout Quote Link to comment Share on other sites More sharing options...
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