Normal
To add a bit more to this story - we have a TM8 that was exhibiting the same problem. Low and uneven frequency response on Aux 3. I found this thread and took ours apart to find bulging blocking caps. Here's where things get interesting: I spoke to a friend of mine who does authorized service for QSC. Apparently in early production units of the TM's, the circuit boards were labelled backwards for the blocking caps, so although they appear to be installed correctly, they are backwards, meaning that if you send any of those outputs into a console with phantom power on, there's no blocking going on and the caps will fry.So if you go to the effort of replacing the caps, check to make sure they are in correctly (positive side of the cap should make continuity with pin 2 of the output XLR - ours are backwards currently).Hope that helps anyone else with this problem.Cheers,Brian
To add a bit more to this story - we have a TM8 that was exhibiting the same problem. Low and uneven frequency response on Aux 3. I found this thread and took ours apart to find bulging blocking caps. Here's where things get interesting: I spoke to a friend of mine who does authorized service for QSC. Apparently in early production units of the TM's, the circuit boards were labelled backwards for the blocking caps, so although they appear to be installed correctly, they are backwards, meaning that if you send any of those outputs into a console with phantom power on, there's no blocking going on and the caps will fry.
So if you go to the effort of replacing the caps, check to make sure they are in correctly (positive side of the cap should make continuity with pin 2 of the output XLR - ours are backwards currently).
Hope that helps anyone else with this problem.
Cheers,
Brian
