CurtZHP
Well-known member
Just fired up the G7. Hooked it up to a Mackie mixer and monitored through headphones. Hit the switch on the power supply. Disappointed by lack of audio, but not really surprised. Tried turning the pattern switch, got the usual thumps. Here's where it gets interesting.....
I look down at the Mackie, and I notice that the Phantom Power LED is lit. Looked at the Phantom Power switch on the back several times to confirm that it is indeed in the OFF position. ??? The LED must actually read a DC voltage, and obviously that voltage is coming from the mic!
I unplug the mixer, grab the voltmeter, and check the pins on the mic's output XLR. Here are my findings:
Cardioid pattern = 57VDC
Omni pattern = 0VDC
Figure 8 pattern = 122VDC!
That's ugly!
Although I checked all the PSU connections when I finished the PSU last year, I checked them again. Note: these measurements are without the mic connected.
Pin 1 = 0VDC
Pin 2 = 174VDC
Pin 3 = 0VDC
Pin 4 = 0VDC
Pin 5 = 85.5VDC (cardioid), 0VDC (omni), 176.5VDC (fig-8)
Across Pins 6 and 7 = 6.3VDC
Other information:
Capsule: Peluso CEK12 Transformer: OEP A262A3E (windings wired in series. I was told this helps with capsules that have a top end lift like the CEK12.)
Help!
I look down at the Mackie, and I notice that the Phantom Power LED is lit. Looked at the Phantom Power switch on the back several times to confirm that it is indeed in the OFF position. ??? The LED must actually read a DC voltage, and obviously that voltage is coming from the mic!
I unplug the mixer, grab the voltmeter, and check the pins on the mic's output XLR. Here are my findings:
Cardioid pattern = 57VDC
Omni pattern = 0VDC
Figure 8 pattern = 122VDC!
That's ugly!
Although I checked all the PSU connections when I finished the PSU last year, I checked them again. Note: these measurements are without the mic connected.
Pin 1 = 0VDC
Pin 2 = 174VDC
Pin 3 = 0VDC
Pin 4 = 0VDC
Pin 5 = 85.5VDC (cardioid), 0VDC (omni), 176.5VDC (fig-8)
Across Pins 6 and 7 = 6.3VDC
Other information:
Capsule: Peluso CEK12 Transformer: OEP A262A3E (windings wired in series. I was told this helps with capsules that have a top end lift like the CEK12.)
Help!