Jonas Jadeborn got a BM-800 with a slightly different printed circuit board from the ones I bought.

Fortunately, the circuit is the same as other BM-700 and BM-800 mics, and the pads at the top of the board are the same. So the electrolytic filter cap + goes to Pad 1 and -- to ground at Pad 2 or Pad 4. The small 20 to 30 pF cap goes from Pad 3 to Pad 5. Same as the other board.

Jonas found his mic was quiet without adding a resistor. So here are pictures of his modified mic fitted with a 25mm capsule and paint job.

  --    +

Added cap.

Thank you, Jonas for the pictures. Hope you make some great recordings with your microphone.

Pad1  2  3  4  5

Pad 5  4  3  2  1