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Mods for the JM37

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    Revoice the bright JM37 with an RK-12 or RK-47 capsule from

CardioidJoemeek JM37

Cardioid Condenser Microphone

The Joe Meek JM37 is a large diaphragm, side-address, FET condenser with a fixed Cardioid polar pattern.

The capsule is described a “concentric electrode” design, which likely means “center terminated.” We assume this is a K67 clone from China. The diaphragm is specified as Gold-sputtered Mylar, 26mm in diameter.

The output circuit is transformerless. The mic body is machined brass.

The mic’s self-noise rating of 19dBA is high for modern FET microphones; this mic is likely unsatisfactory for recording spoken word, voiceover, or quiet acoustic instruments.

A dual pattern JM37-DP is also available.

Permalink: Joemeek JM37

The mic was released in 2005.


Pickup Patterns Pads & Filters
Cardioid (16 mV/Pa; 25 - 20,000 Hz)
Capsule Dimensions Impedance SPL/Noise
Diaphragm diameter: 26.29mm
200 Ohms (Low) Max SPL: 128 dB
Self-noise: 19.0 dB(A)
Weight Length Max Diameter Interface(s)
460g (16.23oz) 137mm (5.39'') 22mm (0.87'')
  • 3-pin XLR male (1)
Power Specifications
  • Requires phantom power
  • Phantom voltage: 48v

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