JT-30 WITH A 3-PIN CONNECTOR

From the questions I get it's apparent that the confusion continues regarding the use of 3-pin XLR "professional" audio connectors on Harpmics -especially those mics built in the image of the venerable JT-30. All the Harpmics produced by ASTATIC, CTI, HOHNER, and OMNI-TRONIX that fit the JT-30 profile are -indeed- JT-30 kin. All the Harpmics produced under these names from the time the XLR 3-pin male connector was introduced and installed on 'em are HIGH IMPEDANCE units. Their XLR connectors are wired with pin #3 as "HOT" or "Positive" and pin #1 as "GROUND"or "Negative". Pin #2 is not used... This differs from the industry standard configuration for the XLR on LOW-Z mics and 'pro' audio gear in that they're wired with #2 "Positive", #3 "Negative" and #1 as "Shield".
The key to remember is this: The connector DOES NOT determine the unit's impedance. In microphones, the element and its internal matching transformer (if present) establish its impedance. The correct match makes all the difference...