FYI How to fix AKG Solid Tube hum problem
« on: September 12, 2005, 04:20:04 PM »
One of my AKG Solid Tube mics developed a bad hum and I as able to fix it, here is the deal. If you have one you might want to do this.

The only connection between the mic body and the head grill is the joit where they fit together. The body side has some paint overspray on it and the head side gets oxidized over time and it can loose contact. This means no shielding for the capsule and bad hum.

Just taking the mic apart and putting it back together can cause or fix this. However, a better fix is to remove the three screws in the bottom, seperate the two pieces, abrade the metal on both parts till you get down to bare shiny metal and reassemble the mic.

If you want to go overboard you could also solder a wire to the inside of the screen and splice that in to the pin 1 wire going to the XLR. Just leave enough slack to take the mic apart and a quick disconnect would be nice too.

Saved me a repair bill and a lost session.


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