OldGit Posted July 12, 2008 Share Posted July 12, 2008 (edited) Hi had an odd one at the gig last night. Markbass LMK, into Yamaha mixer amp. My line out was creating a low hum in the PA ast night, even when powered off. We checked cables, mains earths etc .. In the end we just played with it there as the row from the mechanical bull on the dance floor (don't ask) covered the sound up .. Then on the way home I remembered the LMK has a ground lift .. Do you think that may have helped? Edited July 12, 2008 by OldGit Quote Link to comment Share on other sites More sharing options...
BOD2 Posted July 12, 2008 Share Posted July 12, 2008 Was your gear and the mixer plugged into the same wall socket ? If not then you can sometimes have problems if the different wall sockets are on different mains circuits. Allways worth trying the ground lift switch, although it often will not help. Quote Link to comment Share on other sites More sharing options...
OldGit Posted July 12, 2008 Author Share Posted July 12, 2008 (edited) [quote name='BOD2' post='238273' date='Jul 13 2008, 12:07 AM']Was your gear and the mixer plugged into the same wall socket ? If not then you can sometimes have problems if the different wall sockets are on different mains circuits. Always worth trying the ground lift switch, although it often will not help.[/quote] Yes everything runs through our PCB and one socket. Ground lift: OK I'll try it Thursday at the next gig. Edited July 12, 2008 by OldGit Quote Link to comment Share on other sites More sharing options...
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