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A superb omnidirectional crystal microphone used by discriminating Harmonica musicians. The JT 30VC’s high output crystal element has been factory tuned to provide just the right presence or “bite” to create the ideal sound for blues and many other styles of play.

The rugged JT 30VC has a die-cast zinc housing which is “cup shaped” for a comfortable fit in the palm of the hand, and the JT 30VC includes an easy to operate volume control. It is elegantly finished in a non-reflecting black urethane paint with a brass plated grille.


Frequency Response

Generating Element:
Polar Pattern:
Frequency Response:
30 Hz - 8 kHz
Open Circuit Voltage:
-49 dB (0 dB = 1 volt per microbar) @ max. gain
35 mV/Pascal
High (Recommended load is 250K ohms minimum)
Positive Pressure on Diaphragm generates a positive voltage on pin 3 relative to pin 1
Die Cast Zinc Alloy
Body - Black urethane paint
Grille - Chrome Plated
NET Weight:
241 grams (8.5 oz.)
285 grams (10 oz.)

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