Signal on both outputs but mixer balance set to one channel.
Buzz Lightyear
Posts: 75
Hey Gang,
Having discovered some insane wiring issues and an overnight ground loop created - I felt it was time to check everything out more in detail. So here's the long and short of it...
Floor pots in dance floor utilize two XLR inputs. Each input is independently wired to a second XLR box in an upstairs room. From that box, an XLR cable is inputted to that and ran to the rack to feed the DRPA. Upstairs, there is a four wire signal cable utilizing red (+) and white (-) and bare wire ground (|). Then, there is another cable utilizing green (+) and white (-) and bare wire ground (|). Downstairs it's different story! Sound contractors (maybe?) had attached a signal lead to the green/white combo and it has red (+) and white (-) and bare wire ground (|). Unfortunately, it is unknown which lead is actually hot, cold, or ground. Since I had discovered a large majority of mismatched connections, I am returning everything to the standard 1-GROUND 2-HOT 3-COLD.
SO!
The issue I am presently facing is that I took the green/white signal wire out of the loop and using the four wire signal cable, I used red/black for left channel and white/black for right channel. White and red being the HOT (2) on each channel and black for COLD (3) and sharing bare wire for common ground (1) between the two.
Upstairs I utilized the same exact format. However, even with the mixers' balance set to one channel I still get signal to the opposing channel when the HOT lead is attached to the XLR box. When I swap COLD leads I get no signal to the channel I am designating to send signal to the rack so I know that I have the one channel isolated correctly.
Oh, and the mixer is also set to STEREO.
I like to think I'm pretty good at wiring but I'm kinda \"huh?\" about this one. Any idea-rs?
Mike
Having discovered some insane wiring issues and an overnight ground loop created - I felt it was time to check everything out more in detail. So here's the long and short of it...
Floor pots in dance floor utilize two XLR inputs. Each input is independently wired to a second XLR box in an upstairs room. From that box, an XLR cable is inputted to that and ran to the rack to feed the DRPA. Upstairs, there is a four wire signal cable utilizing red (+) and white (-) and bare wire ground (|). Then, there is another cable utilizing green (+) and white (-) and bare wire ground (|). Downstairs it's different story! Sound contractors (maybe?) had attached a signal lead to the green/white combo and it has red (+) and white (-) and bare wire ground (|). Unfortunately, it is unknown which lead is actually hot, cold, or ground. Since I had discovered a large majority of mismatched connections, I am returning everything to the standard 1-GROUND 2-HOT 3-COLD.
SO!
The issue I am presently facing is that I took the green/white signal wire out of the loop and using the four wire signal cable, I used red/black for left channel and white/black for right channel. White and red being the HOT (2) on each channel and black for COLD (3) and sharing bare wire for common ground (1) between the two.
Upstairs I utilized the same exact format. However, even with the mixers' balance set to one channel I still get signal to the opposing channel when the HOT lead is attached to the XLR box. When I swap COLD leads I get no signal to the channel I am designating to send signal to the rack so I know that I have the one channel isolated correctly.
Oh, and the mixer is also set to STEREO.
I like to think I'm pretty good at wiring but I'm kinda \"huh?\" about this one. Any idea-rs?
Mike
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Comments
G
Originally, it was a ghost (about -10db) hard left or right and strong signal with balance centered.
Now to find out why I all of a sudden have the ground loop buzz back at my ZC...
Thanks Gadget. It appears \"talking\" it out helps me answer my own problem. I might post in the ZC section here in a bit about the \"buzz\".
Mike