I did some testing last night and found that the only way I can get audio through our Neumann mic will be accompanied with loud hiss that people seem to be encountering while using phantom power. I've tried every combination of channel for the mic, power and recording, and I always get hiss. When I turned the phantom power off, the hiss slowly dies down and I get normal clean sound for about 2 seconds and then it dies also, which I assume is the power level dropping.
So would I be correct in assuming that if we get an external power source for the mic, or a mic that runs on its own power, that the hiss problem goes away? Has anyone found a work around for this issue yet otherwise? I havent seen one in the posts I've read but it never hurts to ask... We have a shoot coming up and I need to get this solved ASAP.
Also, if external power is the way to go, could someone recommend a good product that provides this? We're using a Neumann KMR 82i.