tarandfeathers wrote:I'm a little confused by this. I have a Gefell MV692/UM70, which I built a power supply for, basically just a pair of caps to decouple pins 2 and 3, and on the mic side 12v applied exactly as standard phantom power through a pair of matched resistors.
Sounds good.
This appears to have been working fine (for a couple of years now), but from the diagrams on that site it looks like I'm applying an incorrect voltage to one of them.
You could always test this at the microphone. It sounds to me like you've got it right though. I didn't fully understand what people were saying at that other forum.
Could I be doing the mic some damage like this? Or, if I were to make one of these conversion boxes, could I be getting more out of the mic? Hmmm... I didn't think the Gefell stuff was T-Power anyway...
I doubt you're doing it any damage if it is working fine. If it sounds good, then that's fine. If the capsule received too much voltage, the diaphragm would get sucked onto the backplate probably and you would hear it happening.
I still don't know much about T-Power and I'm not sure if the Gefell mics are T-Power.
Someone email Gefell!
I'm sure a very simple arrangement could be made (eg. a couple of resistors) for a specific mic.