Microphone details required

[rob2630]

I wonder if anyone is able to help. I am trying to find details, preferably circuit diagram, of the MDRMN4025B microphone. I have figured out what each of the four connections does but need to know what the power supply should be and what should be connected to the audio connection. I could try and trace the circuit but I don't want to get it wrong and blow up the mic. I would greatly appreciate any help on this.