So I was running Busman BSC1's with hyper caps and big-ass shure windscreens, at 10" with cables running into a Denecke PS-2. The PS2 spits out XLR, so I use a HOSA adapter (I know...) to make those dual XLR males into one stereo 3.5 for the 9100. The 9100 pre then drops the signal into my R-09HR. I've done this setup a million times with no problems, but this time, my 9100's clipping light stayed bright red, even though I couldn't hear anything wrong when I tried to monitor it. I'm guessing that this problem will be the 9100, because during an intermission, I swapped out all batteries with new ones (the originals were new, but who knows), checked all connections, switched my link from the 9100 to the R09HR, and double checked that the caps were screwed down securely on the mics. Another short test involved unplugging everything from the 9100 and just turning it on... any cable activity was met with about 30-60 seconds of no activity from the clipping light, then it came on weakly, then stronger, then all the way; even with no cables plugged in. Unplug either the input or output, the light goes off for a while, plug in either in or out, and the light goes out for a comparable amount of time (30 seconds or so). Just when I thought I had the whole thing solved, and that I had diagnosed a problem with the 9100, it operated fine throughout the second set (90min or so). I have no idea what's going on, so here's a screenshot, I can get audio samples if that'll help.
BTW: The show was Counting Crows at Pier 6 Pavilion in Baltimore MD