Mic Archive
Audio-Technica PRO 45
Photo: Audio-Technica, from its spec sheet, p. 1.

Audio-Technica

Audio-Technica PRO 45

Miniature cardioid condenser hanging mic for choirs, ensembles and stages, on a 7.6 m attached cable with the electronics in the XLR plug

Type
Condenser (electret)
Pattern
Cardioid
Sensitivity
−37 dBV/Pa
Self-noise
28 dB(A) computed
Max SPL
134 dB SPL
Impedance
100 Ω
Rated range
70 – 16k Hz

Frequency response

Angle
Distance

Frequency response: from the spec sheet, p. 1. "Frequency Response", "12" or more on axis" (about 30 cm). No dB labels: scaled from the "10 dB" bar and set to 0 dB at 1 kHz. 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. "Polar Pattern", full circle, 0° up; "SCALE IS 5 DECIBELS PER DIVISION". Measuring conditions not stated.

Compare with other mics

All specs

From the spec sheet
Sensitivity−37 dBV/Pa (14.1 mV/Pa), open circuit, 1 kHz. "–37 dB (14.1 mV) re 1V at 1 Pa".p. 2
Self-noise28 dB(A). Not stated; 94 dB SPL minus the 66 dB signal-to-noise ratio.
Max SPL134 dB SPL, 1 kHz, 1% THD. "134 dB SPL, 1 kHz at 1% T.H.D."
Signal-to-noise ratio66 dB, 1 kHz at 1 Pa, A-weighted, typical. "66 dB, 1 kHz at 1 Pa"; footnote "Typical, A-weighted, using Audio Precision System One".
Dynamic range106 dB, 1 kHz at max SPL, typical
Output impedance100 ohm. "100 ohms"; page 1: "Output is low impedance balanced".
Rated frequency range70 Hz to 16 kHz
Poweringphantom 9-52 V DC. "9-52V DC, 2 mA typical".
Current draw2 mA, typical
ConnectorXLR-3 male at the end of the attached cable. "3-pin XLRM-type"; the dimension drawing shows the XLR housing as 68.0 mm long, 19.0 mm diameter.
Weight15 g, less cable. "0.5 oz (15 grams)".
Dimensions56.9 × 12 mm. Length × head diameter: "2.24" (56.9 mm) long, 0.47" (12.0 mm) head diameter".
Finishlow-reflectance black (PRO 45); white (PRO 45W)p. 1
Supplied accessoriesfoam windscreen (AT8146); steel hanger. "Foam windscreen, steel hanger"; page 1 names the windscreen AT8146.p. 2
ModelsPRO 45: black. PRO 45W: white mic housing, windscreen, cable and steel hanger, for hanging against a light backgroundp. 1
Cable7.6 m (25 ft), permanently attached, 2.6 mm diameter, 2-conductor shieldedp. 2
HangerVinyl-coated steel wire hanger; twist the mic in the hanger to aim itp. 1
Placement (Audio-Technica)Hang forward of the front-most source, above the rear-most, aimed between them; the distance to the rear-most source no more than twice that to the front. Pickup width is about three times the distance to the nearest performer; space extra mics at least three times the distance to the front source
Optional accessoriesAT8104a large metal windscreen; AT8117 large foam windscreen; CP8201 line matching transformer; AT8202 in-line attenuator; AT8314 cable; CP8506 and AT8801 phantom power suppliesp. 2

Documents

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

Product page on audio-technica.comRecording Hacks

Recommended for

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

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