Rob Flinn
Well-known member
I've just got to the testing stage with a C12 clone that I started some years ago (see pic). The insides are a Poctop pcb that I have glued in place with Araldite. The PSU is the matching Poctop board. It uses a Tim Campbell capsule. The problem I have is that the mic seems to overload if I talk loudly into it. If I hold it about 50cm away it sounds quite nice if I speak into it, but is unusable in a real world recording situation. It's difficult to describe the sound, but it is sounds like it has reached the end of it's headroom or like a lot of wind is blowing directly into the capsule. Since it is very high impedance it's quite difficult to test. I'm getting 1.1v bias & 117v at the mic & I have swapped the valve out with another I had. I'm just wondering if anyone else has experience this sort of problem & what the solution was ? Or maybe you have some suggestions as to where I should look ?