Mic Archive
Audix ADX20i
Photo: Audix, from its spec sheet, p. 1.

Audix

Audix ADX20i

Miniature cardioid condenser clip-on for brass and saxophone, on the MC20i gooseneck clip with a butterfly clamp; mini XLR cable for wireless bodypacks, or APS910 phantom adapter (ADX20iP)

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

Type
Condenser (electret)
Pattern
Cardioid
Sensitivity
−44.4 dBV/Pa
Self-noise
29 dB(A)
Max SPL
135 dB SPL
Impedance
250 Ω
Rated range
40 – 20k 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
Capsulemodular threaded capsule, machined brass, 12 mm; cardioid (fitted) or hypercardioid. Architect's specification: "a modular threaded capsule"; "machined out of brass with a length of 30 mm and a capsule diameter of 12 mm"; sensitivity given for both capsules.p. 2
Sensitivity−44.4 dBV/Pa (6 mV/Pa), 1 kHz, cardioid capsule; also −45 dBV/Pa, 1 kHz, hypercardioid capsule (5.6 mV/Pa). "Cardioid - 6 mV / Pa @ 1k, Hypercardioid - 5.6 mV / Pa @1k"; converted (20 log10 0.006, 20 log10 0.0056).
Self-noise29 dB(A), less than. "<29 dB (A-weighted)".
Max SPL135 dB SPL, 0.5% THD; "≥135 dB" in the table. Table: "≥135 dB"; architect's specification: "135 dB at 0.5% THD".
Signal-to-noise ratio65 dB, more than. ">65 dB".
Output impedance250 ohm, nominal, 1 kHz
Rated frequency range40 Hz to 20 kHz
Poweringphantom 9-52 V (ADX20iP, through the APS910); bodypack transmitter (ADX20i). Table: "9-52 V phantom". Page 1 and the operation notes say 5-52 V.
Connector6 ft cable ending in a 3-pin mini XLR female; the APS910 adapter (ADX20iP) has mini XLR male in and XLR out. "Shielded 6' terminating to a miniature 3 pin XLRf"; "APS910 phantom power supply" note.
Weight48 g. "48 g / 1.7 oz", as printed; what it includes isn't said.
Dimensions29 × 12 mm. "Length 29 mm / 1.14 in"; the drawing shows 30 × 12 mm (length × diameter), and the architect's specification says 30 mm long.
Finishblack. "Machined Brass Capsule / Black Finish".
Supplied accessoriesMC20i gooseneck clip with shock mount; WS10 foam windscreen; P1 carrying pouch; APS910 phantom power adapter (ADX20iP only). "Models" and "Supplied accessories".p. 1
ModelsADX20i: mic with 6 ft cable, gooseneck clip and windscreen, for Audix wireless bodypacks. ADX20iP: the same with the APS910 phantom power adapter, for wired use
MountMC20i gooseneck clip: aluminium ring with rubber shock mount, spring-tension gooseneck, butterfly clamp for the bell of a horn
Optional accessoriesMCMICRO stand adapter (any 12 mm mic); SMTMICRO stand adapter with rubber shock mount, 5/8" thread
PolarityPositive pressure on the diaphragm gives positive voltage on pin 2 relative to pin 3p. 2
Placement (Audix)Saxophone and brass: towards, but not inside, the bell; keep the capsule's round ports clear of the shock mount

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.com

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