RadioKnight
Member
Hello everyone, first post on Control Booth!
Anyway, straight to the business!
Our auditorium has an MS-232 clear-com base station installed in our control booth for lights, sound, and spot headsets (some are old 501 clear-com beltpacks, others have these little off-brand Que-com getups). However, that base station is also hooked up to an ancient ps-10k power supply located on-stage for redundancy (the control booth was given a single 20A circuit for all ten of my power amps, we trip that breaker a lot). Our on-stage headsets are hooked up to the ps-10k (again, another mixed bag of 501's and Que-coms).
Now, the headsets in the booth sound pretty clean, minimal hum, but the on-stage headsets have a lot of hum, so much so that the flyman will miss a cue because he can't understand what's being said. I think the problem has to do with the location of the ps-10k (mounted in a rack which was wall-mounted on top of giant dimmer rack power conduits), and the stage manager's headset (sits next to the same giant conduits while calling a show). Whenever the lights change for a cue, you can hear the hum in the headsets change pitch and/or volume.
I can't move the rack or the power supply, and the stage manager can't relocate either. I don't think an isolator will fix this either but I could be wrong. I'm trying to help out the guys on rail, but I don't know how to fix this problem.
Anyway, straight to the business!
Our auditorium has an MS-232 clear-com base station installed in our control booth for lights, sound, and spot headsets (some are old 501 clear-com beltpacks, others have these little off-brand Que-com getups). However, that base station is also hooked up to an ancient ps-10k power supply located on-stage for redundancy (the control booth was given a single 20A circuit for all ten of my power amps, we trip that breaker a lot). Our on-stage headsets are hooked up to the ps-10k (again, another mixed bag of 501's and Que-coms).
Now, the headsets in the booth sound pretty clean, minimal hum, but the on-stage headsets have a lot of hum, so much so that the flyman will miss a cue because he can't understand what's being said. I think the problem has to do with the location of the ps-10k (mounted in a rack which was wall-mounted on top of giant dimmer rack power conduits), and the stage manager's headset (sits next to the same giant conduits while calling a show). Whenever the lights change for a cue, you can hear the hum in the headsets change pitch and/or volume.
I can't move the rack or the power supply, and the stage manager can't relocate either. I don't think an isolator will fix this either but I could be wrong. I'm trying to help out the guys on rail, but I don't know how to fix this problem.