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Mojave Audio

Mojave Audio MA-37 Large Diaphragm Tube Condenser Microphone

SKU #L91017000000000
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Overview

Condenser microphone with high headroom and vintage design.

The MA-37 large diaphragm tube condenser microphone from Mojave Audio is a modern take on the legendary Sony C-37a. Known for its high headroom and ability to tame brittle high end, it became a workhorse in the 60’s, especially during the golden age of Hollywood recording. The Mojave MA-37 features an EF86 tube, Lundahl transformer and a special capsule built in California. It features a unique mechanical approach, developed by RCA in the 1930s and adapted by Sony, to achieve a choice between cardioid and omnidirectional polar patterns – an adjustable tuned acoustic chamber. The simple yet elegant circuit design is based around a single-stage tube amplifier. The hi-pass filter controls are located on the power supply, offering three options: at (M), 100Hz (V1) and 200Hz (V2).

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Specs

MA-37 Large Diaphragm Tube Condenser Microphone Specifications:

  • Capsule type: Single diaphragm
  • Polar pattern: Choice of cardioid or omni; via mechanical shutter
  • Frequency response: 30 to 18,000 Hz. ±3 dB ("M" setting)
  • Sensitivity: -46 dBv referred to 1 volt per pa.
  • Maximum SPL: 120 dB with pad off, 135 dB with pad on.
  • Distortion: Not to exceed .5 percent at 134 dB
  • Self noise: Better than 18 dB
  • Bass cut: M flat
  • V1 -6dB at 40 Hz.
  • V2 -6dB at 100 Hz.
  • Impedance: 170 ohms, floating.
  • Recommended load 1500 ohms or higher
  • Power requirement:
  • 115 or 230 VAC, 50 or 60 hertz; 5 watts
  • 6 volts DC at 200 mA
  • 140 volts DC at 1.5 mA. from dedicated power supply
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