JD
Well-Known Member
So, I had a few old EV microphones, a couple of 635A's and a RE-16, good old workhorse microphones still in their bags. Had to test a mixer out, and I grabbed one and plugged it in.... nothing! Picked up another... nothing. Picked up the third... nothing! Picked up an old SM57 and that worked fine. Ok, these mics used to work great, and were almost indestructible. Metered 2 to 3, Open circuit! Autopsy time.
What I found was a little disturbing. There is a glue that is used near the diaphragm that turned into a semi-liquid state and it had dissolved the fine copper wires that led to the coil. It was a sad discovery as I suspect whatever they used, they used on all the models of that vintage. Anybody else run into this?
What I found was a little disturbing. There is a glue that is used near the diaphragm that turned into a semi-liquid state and it had dissolved the fine copper wires that led to the coil. It was a sad discovery as I suspect whatever they used, they used on all the models of that vintage. Anybody else run into this?