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

Power Phantom 9-52 V DC.

Type
Condenser (electret)
Pattern
Cardioid
Sensitivity
−37 dBV/Pa
vs 75 end-address condensers

More output than 49% of 75 end-address condensers.

Each stripe is one end-address condenser with a published sensitivity, and each bar counts them; further right means more output. This mic is in blue.

  • Among 204 condensers: more output than 51%
  • Among 311 mics: more output than 66%
Self-noise
28 dB(A) computed
Max SPL
134 dB SPL
vs 110 end-address condensers

Takes louder sound than 27% of 110 end-address condensers.

Each stripe is one end-address condenser with a published max SPL, and each bar counts them; further right means it takes louder sound. This mic is in blue.

  • Among 277 condensers: takes louder sound than 33%
  • Among 343 mics: takes louder sound than 30%
Rated range
70 – 16k Hz

Frequency response

Angle

Distance

From the spec sheet, p. 1.

Polar pattern

Transparency

From the spec sheet, p. 2.

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 SPL1 kHz, 1% THD. "134 dB SPL, 1 kHz at 1% T.H.D."
Signal-to-noise ratio66 dB1 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 dB1 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 mAtypical
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 gless cable. "0.5 oz (15 grams)".
Dimensions56.9 × 12 mmLength × 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
PlacementAudio-TechnicaHang 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 (manufacturers move and drop their documents). Each is © Audio-Technica, unchanged, with its original address.

Product page on audio-technica.comRecording Hacks

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