Mic Archive
Microtech Gefell M 930
Photo: Microtech Gefell, from its spec sheet, p. 1.

Microtech Gefell

Microtech Gefell M 930

Compact side-address large-diaphragm cardioid condenser (PE diaphragm, transformerless transistor preamp)

Type
Condenser
Pattern
Cardioid
Sensitivity
−33.6 dBV/Pa computed
Self-noise
7 dB(A)
Max SPL
142 dB SPL
Impedance
100 Ω
Rated range
20 – 20k Hz

Frequency response

Angle
Distance

Frequency response: from the spec sheet, p. 2. Graph with lines labelled "0°" and "180°"; relative dB (0° is 0 dB in the mids). Distance, room and smoothing not stated. Drawn from the left edge (about 40 Hz) to the right edge (20 kHz).

Dashed: outside the rated range, or simulated (other angles and distances). Hover or tap the graphs for values.

Polar pattern

Polar pattern: from the spec sheet, p. 2. Three polar plots, 0° up, each with 1 kHz and two other frequencies; rings 0, -10, -20 dB labelled (5 dB per ring). Measuring conditions not stated.

Compare with other mics

All specs

From the spec sheet
Capsulelarge-diaphragm pressure-gradient capsule, PE diaphragm. "large diaphragm capsule", "PE diaphragm" (p. 1); "Acoustic operating principle: Pressure gradient transducer" (p. 2).p. 1
Sensitivity−33.6 dBV/Pa (21 mV/Pa), 1 kHz. Not stated by the manufacturer: From "21 mV/Pa": 20·log10(0.021).p. 2
Self-noise7 dB(A), IEC 268-4. "Inherent noise IEC 268-4: 7 dB(A)". The 2016 brochure says "DIN EN 60268-4: 7 dB-A" (p. 8).
Self-noise (CCIR 468)13 dB, CCIR 468-4
Max SPL142 dB SPL, 0.5% THD
Signal-to-noise ratio87 dB, re 1 Pa at 1 kHz, A-weighted; also 81 dB, re 1 Pa at 1 kHz, CCIR-weighted
Dynamic range135 dB, of the electronics
Output impedance100 ohm
Rated frequency range20 Hz to 20 kHz; also [40, 20000], 2016 brochure. "20 to 20.000 Hz". The 2016 brochure gives "40 ... 20.000 Hz" (p. 8), and both response graphs start at 40 Hz.
PoweringP48 phantom (IEC 61938)
Current draw3.6 mA, P48. "3,6 mA".
ConnectorXLR-3M. The brochure adds "goldplated contacts" (p. 8).
Weight210 g. The brochure: "Weight without MH 93.1" (p. 8).
Dimensions118 × 45 mm. Length × diameter, "118 mm x 45 mm".
Finishsatin nickel or dark bronze
Max. output level18 dBu (RL = 10 kΩ); 17 dBu (RL = 1 kΩ)
MountsMicrophone holder MH 93.1 (standard); elastic suspensions EA 93 (with A 93 adaptor) or EH 93 Pp. 1
AccessoriesW 76 windscreen; P 110.20 popscreen; C 70.1 / C 70.1 HF 10 m XLR cables
Description"the smallest large membrane microphone"
From the catalog
OutputTransformerlessp. 1
Internal suspensionCapsule and electronics elastically suspended inside the metal housingp. 4
Response character"a smooth frequency response with a slight presence boost in the 7 to 11 kHz range"
Stereo and surroundMatched pairs for XY (SH 93 stereo holder) and ORTF (TD 93 double mount, 170 mm, 110°); INA 5 / INA 5-R surround arraysp. 10

Documents

Copies kept by Mic Archive, because manufacturers move and drop their documents. Each is © Microtech Gefell, unchanged, with its original address.

Product page on microtechgefell.deRecording Hacks

Recommended for

Instruments whose sources name this mic, or an earlier version or variant of it.

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