Mic Archive
Audix OM7
Photo: Audix, from its spec sheet, p. 1.

Audix

Audix OM7

Dynamic, hypercardioid, handheld vocal mic with a deliberately low output (8-10 dB below typical dynamics) for loud stages

Approximate Some readings for this mic are uncertain; see the graphs.

Type
Dynamic
Pattern
Hypercardioid
Sensitivity
−61.9 dBV/Pa computed
Max SPL
144 dB SPL
Impedance
50 Ω
Rated range
48 – 19k Hz

Frequency response

Angle
Distance

Frequency response: from the spec sheet, p. 2. Titled "Frequency response"; relative dB (axis labelled "dBm", +10 to -10). Distance, room and smoothing not stated.

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. Titled "Polar patterns"; two plots, "Lo" (125 Hz to 1 kHz) and "Hi" (2 to 16 kHz), full circles, 0° at the right. Scale "dBSPL" from 0 at the outer circle to -36 at the centre. Measuring conditions not stated. Approximate reading error up to about 1 dB.

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All specs

From the spec sheet
CapsuleVLM Type C (very low mass diaphragm). "Capsule Technology VLM Type C"; page 1: "VLM™(Very Low Mass) diaphragm".p. 2
Sensitivity−61.9 dBV/Pa (0.8 mV/Pa), 1 kHz. Not stated by the manufacturer: Converted from "0.8 mV / Pa @ 1k" (20·log10(0.0008) = -61.9).
Max SPL144 dB SPL, at least ("≥144 dB"). "Maximum SPL ≥144 dB"; no THD figure.
Output impedance50 ohm, nominal, at 1 kHz; also 150 ohm, 2009 sheet. "Output Impedance 50 ohms"; the architect and engineer text: "equal to 50 ohms at 1 kHz". The 2009 sheet says 150 ohms.
Rated frequency range48 Hz to 19 kHz. "48 Hz - 19 kHz"; no tolerance given.
Poweringnone. "Power Requirements None".
ConnectorXLR-3 male, gold plated. "3-pin XLRm"; page 1: "gold plated XLR connector". The 2009 sheet: "Switchcraft® male XLR connector".
Weight307 g. "307 g / 10.8 oz".
Dimensions53 × 176 mm. Grille diameter × length: "53 mm in diameter at the widest point on the grill and 176 mm in length"; 23 mm at the base.
Finishzinc alloy, black E-coat; steel mesh grille. "Zinc Alloy / Black Finish"; page 1: "durable black E-coat finish, dent resistant steel mesh grill".
Supplied accessoriesMC1 nylon mic clip; P1 carrying pouch. "Supplied accessories". Optional: WS357 windscreen, CBL20 and CBLDR25 cables, T50K transformer, tripod stand.p. 1
Off-axis rejection>30 dBp. 2
Output level"unconventionally low output level (8-10 dB lower than typical dynamic microphones)"p. 1
PolarityPositive pressure on the diaphragm gives positive voltage on pin 2 relative to pin 3p. 2
Placement (Audix)Sing directly into the mic within 1 inch; keep 2-3 feet between mics on stage
Warranty5 years

Documents

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

Product page on audixusa.comRecording Hacks

Recommended for

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

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