Thanks, Henry. This makes perfect sense. I figured that the second resistor was related to the signal coming from the backplate but you've explained why. I am interested in your comment about a capsule acting as its own coupling capacitor. I thought the coupling capacitor was necessary to polarize the capsule by maintaining a consistent charge.
Also, your preference for applying the bias voltage to the diaphragm and grounding through caps while taking the signal from the backplate is intriguing. I hadn't even considered that was possible. If you do this with a dual diaphragm with a single backplate, does that mean you can only do figure 8 and (if you cut the charge to one diaphragm) cardioid?
