Good morning everybody, I encountered a problem yesterday with our new sound system that has me baffled. I need to set the stage, though, so bear with me. We have four hanging microphones on our stage that are hard wired to our patch bay, but not hard wired to our board. Whenever I use them I patch them through whatever channel is available. They need phantom power to operate and work well. Yesterday I set up for a little kiddie musical. The risers were set up well in front of our upstage hanging microphones and the down stage ones wouldn't cover any kids standing in front of the risers. I dug out our old AT boundary microphones (which also require phantom power). When I set them up, they wouldn't work. I tried to change different channels and still nothing. I finally put an AA battery in the power module of the mic and they worked perfectly. My question... Why would these channels operate the hanging microphones requiring phantom power but not the boundary microphones? The only thing that I could come up with is that there is some loss of voltage from the booth to the stage (about a 100' run) and that the hanging microphones (being a newer technology than my 10 year old boundary microphones) may still function with this lower voltage. Does this sound plausible? I am thinking about purchasing a phantom power supply to keep on the stage for these cases. Thanks for any input.