MX391 with 3 pin mini connector - Model 700623-002

FAQ #2984 Updated August 24, 2012

Question:

I just bought a microphone from eBay that looks like the MX391, except it has a 3 pin mini connector on it. It is model 700623-0002. How do I adapt this to an XLR connector?

Answer:

That was an OEM microphone that we made for Intel. The connector on it was specialized to Intel. Follow these instructions to connect this microphone to a normal XLR input on a mixer:

1) Cut off the 3-pin mini connector.

2) Solder on a new 4 pin TA4F connector. This can be ordered as Shure part number WA330. Wiring is as follows:

Shield - Pin 1
Red wire - Pin 2
Black wire - Pins 3 and 4

4) Purchase the RK100PK inline electronics module. The 4 pin TA4F connector will plug into the RK100PK. The output of the RK100PK is a 3 pin XLR. The RK100PK requires phantom power from the mixer.

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MX391

RK100PK

WA330

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