mdcplas

Well 2 are grounded and the other isn't. I'm not sure which is which though. You can put a multimeter to it and find out. the two wires that buzz back are ground the other wouldn't be

Your seeing the initial voltage because the capacitors have not fully charged. Once charged then your using them as a DC Block. As long as they are charged and not discharged you shouldn't see the 2 volts on the plug again. the ECM-55 I think is the whole Mic isn't it not just the Electret. if so then something like this would work best for you. http://www.bhphotovideo.com/bnh/controller...ow_to_High.html

Since the WM-61A is rated at 2 volts. Couldn't you just wire in a 1.5volt AA or AAA battery 1 for left and 1 for right and just use a capacitor on the line in for left and again for right channel? This would exclude the resistors since the voltage is under the rated volt. NM I needed to read the datasheets.

The website German to English translated. http://babelfish.yahoo.com/translate_url?d...TrUrl=Translate