- Is the run between the mixer in the booth and the amp rack on the stage a proper, balanced XLR? Have you verified that this cable is wired correctly?
The cable seems to be wired fine, although the two ends are much too far apart for me to use a tester on it. Suggestions?
- Have you lifted pin 1 of that XLR, AT the stage?
Yes. I've lifted it at the booth, too. It actually makes the hum slightly louder.
- Is anything bonded to the conduit that the XLR runs in? Measure the impedance of pin 1 to the conduit with it disconnected at both ends.
I'll try this.
- Does all equipment in the stage rack share a single common ground? E.g., is all equipment plugged into a rack rider or some similar, which is plugged into a single outlet?
Stage rack is powered by a single outlet. Booth equipment was on two different ones, but I moved it all to 1. No effe
- Same question for the Booth.
- Is there any additional equipment in the facility connected to the sound system which is plugged in to power somewhere else?
The cable seems to be wired fine, although the two ends are much too far apart for me to use a tester on it. Suggestions?
- Have you lifted pin 1 of that XLR, AT the stage?
Yes. I've lifted it at the booth, too. It actually makes the hum slightly louder.
- Is anything bonded to the conduit that the XLR runs in? Measure the impedance of pin 1 to the conduit with it disconnected at both ends.
I'll try this.
- Does all equipment in the stage rack share a single common ground? E.g., is all equipment plugged into a rack rider or some similar, which is plugged into a single outlet?
Stage rack is powered by a single outlet. Booth equipment was on two different ones, but I moved it all to 1. No effe
- Same question for the Booth.
- Is there any additional equipment in the facility connected to the sound system which is plugged in to power somewhere else?