blunderfonics
Member
I recently picked up a pair of Chinese Ribbon mics via a group buy over at the Tape Op Message Board. When I started using them as a close pair it became apparent that the output of one was inverted from the other. I was able to determine which mic had the problem easily enough by comparing them to other mics. Quality control on budget mics being what it is, I initially assumed it was just a bad wiring job but when I disassembled them to correct the problem both were wired identically. I checked everything I could see without fully dissasembling the mic down to the last screw but didn't notice anything obviously out of place. So at this point I'm thinking that either:
a) The motor was physically inverted (either back to front or end to end) before getting wired.
b) The polarity of the magnets were not oriented correctly during manufaturing of the motor.
or
c) The polarity is getting flipped inside the transformer.
Do any of these theory's make sense? If there are any ribbon experts out there who might know the best way to test for proper assembly, I'd love to gain some insight before I take the mics apart again.
Thanks
a) The motor was physically inverted (either back to front or end to end) before getting wired.
b) The polarity of the magnets were not oriented correctly during manufaturing of the motor.
or
c) The polarity is getting flipped inside the transformer.
Do any of these theory's make sense? If there are any ribbon experts out there who might know the best way to test for proper assembly, I'd love to gain some insight before I take the mics apart again.
Thanks