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OmnidirectionalCardioidGauge Microphones ECM-84

Detachable-Capsule Pencil Condenser Microphone

The ECM-84 is Gauge’s low-cost pencil condenser microphone. It provides Cardioid and Omnidirectional pickup patterns via a pair of interchangeable capsules.

Gauge ECM-84 ShockmountThe capsules are true condensers (externally biased), and are believed to have 22mm diaphragms.

Two switches on the microphone body provide access to a -10dB pad and a high-pass filter (slope and cutoff frequency unknown). These switches differentiate the ECM-84 from some competitive models; the MXL 604, for example, has a single switch that can engage the pad or filter, but not both, whereas the Advanced Audio CM-54 provides a two-position pad and two-position filter.

The ECM-84 bears a superficial similarity to the Apex 185 and Alctron HST-02A, but boasts lower self-noise than both.

Gauge ECM-84 KitThe ECM-84 ships with an elastic shockmount, two interchangeable capsules — one cardioid, one omni — and a padded wooden storage box.

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The mic was released in 2009.


Compatible Capsules
Gauge Microphones ECM-84 CardioidCardioid Gauge Microphones ECM-84 Cardioid
Cardioid capsule
Sensitivity: 9 mV/Pa
Freq. Resp.: 30 - 20,000 Hz
MSRP: n/a | Still In Production
Gauge Microphones ECM-84 OmniOmnidirectional Gauge Microphones ECM-84 Omni
Omnidirectional capsule
Sensitivity: 9 mV/Pa
Freq. Resp.: 30 - 20,000 Hz
MSRP: $89 | Still In Production
Pads & Filters Impedance SPL/Noise
  • Pad: -10dB (Via Switch)
  • Filter: HPF (Via Switch)
200 Ohms (Low) Max SPL: 129 dB
Self-noise: 18.0 dB(A)
Weight Length Max Diameter Interface(s)
n/a 133mm (5.24'') 25mm (0.98'')
  • 3-pin XLR male (1)
Power Specifications
  • Requires phantom power
  • Phantom voltage: 48v

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