Hi All,
I've just built the Scott Dorsey's "Making Mics Better" circuit. I've followed the schematic and I've have the right tensions: 11V on the zener and 34V on R9. I've tried
the circuit with a standard K67 copy capsule but I've a constant "hum" at about 50Hz.
What could have happened?
Thank you very much.
I've just built the Scott Dorsey's "Making Mics Better" circuit. I've followed the schematic and I've have the right tensions: 11V on the zener and 34V on R9. I've tried
the circuit with a standard K67 copy capsule but I've a constant "hum" at about 50Hz.
What could have happened?
Thank you very much.