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<blockquote data-quote="Brad Harris" data-source="post: 105280" data-attributes="member: 380">Buzzes, rain, festivals and crappy security make for easy problems to become way too complicated.Did you have any transformers to put between the stage rack and the M7?Anyone have a QBox, or at the very least a spare 58 and a turnaround on site to verify the send signals are clean coming out of the stage rack?The CD at FOH may have done something with the clock sync coming in the digital in (the only time I&#039;ve used external clocks on profiles is to sync up multiple stage racks, as the cards in the brain never seem to work for me.)Sounds like there was a voltage difference between the grounds of the M7 and your stage rack.I carry a handful of Rapco IsoBlox just for these situations. A decentish (*cheap*) line level transformer. If you have any low freq content (under 115hz), I&#039;d use a better transformer. Price/size/weight is right for me for a quick buzz fixer for talkback, monitor and record feeds, etc.BRad</blockquote>

[QUOTE="Brad Harris, post: 105280, member: 380"] Buzzes, rain, festivals and crappy security make for easy problems to become way too complicated. Did you have any transformers to put between the stage rack and the M7? Anyone have a QBox, or at the very least a spare 58 and a turnaround on site to verify the send signals are clean coming out of the stage rack? The CD at FOH may have done something with the clock sync coming in the digital in (the only time I've used external clocks on profiles is to sync up multiple stage racks, as the cards in the brain never seem to work for me.) Sounds like there was a voltage difference between the grounds of the M7 and your stage rack. I carry a handful of Rapco IsoBlox just for these situations. A decentish (*cheap*) line level transformer. If you have any low freq content (under 115hz), I'd use a better transformer. Price/size/weight is right for me for a quick buzz fixer for talkback, monitor and record feeds, etc. BRad [/QUOTE]

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