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Audio-Technica AT4051b
Photo: Audio-Technica, from its spec sheet (Recording Hacks copy), p. 1.

Audio-Technica

Audio-Technica AT4051b

Small-diaphragm condenser (externally polarised), cardioid, transformerless, with detachable capsule, 80 Hz high-pass and 10 dB pad switches

Type
Condenser
Pattern
Cardioid
Sensitivity
−34 dBV/Pa
Self-noise
16 dB(A)
Max SPL
145 dB SPL
Impedance
50 Ω
Rated range
20 – 20k Hz

Frequency response

Angle
Distance

Frequency response: from the spec sheet (Recording Hacks copy), p. 1. Printed under the graph: "12\" or more on axis" (30 cm or more). 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 (Recording Hacks copy), p. 1. Full circle, 0° at the top, "SCALE IS 5 DECIBELS PER DIVISION". Measuring conditions not stated.

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All specs

From the spec sheet (Recording Hacks copy)
CapsuleAT4051b-EL cardioid head capsule on the AT4900b-48 body (both available separately). "The AT4051b consists of two modular subassemblies: an AT4900b-48 body and an AT4051b-EL head capsule"; omni (AT4049b-EL) and hypercardioid (AT4053b-EL) capsules also fit.p. 1
Sensitivity−34 dBV/Pa (19.9 mV/Pa), open circuit. "–34 dB (19.9 mV) re 1V at 1 Pa".
Self-noise16 dB(A), typical, A-weighted (Audio Precision System One). "16 dB SPL", footnote "Typical, A-weighted, using Audio Precision System One".
Max SPL145 dB SPL, 1 kHz, 1% THD; also 155 dB SPL, with 10 dB pad (nominal)
Signal-to-noise ratio78 dB, 1 kHz at 1 Pa; typical, A-weighted
Dynamic range129 dB, 1 kHz at max SPL, typical
Output impedance50 ohm. Low impedance balanced.
Rated frequency range20 Hz to 20 kHz. Tolerance not stated.
Poweringphantom 48 V DC. "48V DC, 4.8 mA typical"; "It requires 48V DC phantom power".
Current draw4.8 mA, typical
Low cutflat, roll-off; 80 Hz; 12 dB/octave; high-pass. "80 Hz, 12 dB/octave"; switches "Flat, roll-off; 10 dB pad (nominal)".
Pad−10 dB. "10 dB pad (nominal)".
ConnectorXLR-3 male (integral). "Integral 3-pin XLRM-type".
Weight126 g, less accessories. "126 g (4.4 oz)".
Dimensions21 × 155 mm. Maximum body diameter × length: "155.0 mm (6.10") long, 21.0 mm (0.83") maximum body diameter".
Supplied accessoriesAT8405a stand clamp for 5/8"-27 threaded stands; windscreen; protective carrying case
Output stageTransformerless, direct-coupled balanced output
OutputLow impedance balanced, pin 2 hot
HousingTurned brass
Interchangeable capsulesAT4049b-EL omni and AT4053b-EL hypercardioid fit the same AT4900b-48 body
Operating temperatureAvoid more than 43 °C (110 °F) for long periods, and very high humidity

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

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