apologies, some of that went over my head. I'll try my best to tell you my setup...
we use 3 types of Gemini mics for studio recording - Gemini ll, Gemini 5 and Gemini Z5600a - all of which have their own preamp power boxes (or whatever they actually are). They have their own unique cable which connects the mic to the preamp, and then a standard XLR cable is used to connect it to the snake patch bay on the wall. We keep this in our "live room" - it has 16 channels and is split between 2 booths (8 in each booth). The snake runs through to the other booths is connected up to a m-audio profire interface, which is connected to a mac pro via firewire.
As said before, standard XLR and SM58 works fine, no humming. Using a the gemini, as soon as the box in connected to the power cable, humming begins.
no I dont think I am using phantom power. I also sometimes use the same gemini setup, but instead of connecting XLR into snake patch, it goes straight into the back of keystudio midi keyboard. So doesn't require phantom power, just its own box.
How do you eliminate the ground, or lift it as you said. Sorrymate my knowledge is pretty basic.cheers