Audio Technica AT2031 Specifications
AT2031
Cardioid Condenser End-Address Microphone
The ideal microphone for stringed instruments
Features
•Outstanding performance and rugged construction
•High SPL handling and wide dynamic range
•Smooth, extended frequency response with a slight rise in the high-frequency region
•Switchable 150 Hz 6dB/oct hi-pass filter
•Cardioid polar pattern improves isolation of desired sound source
•Low self noise perfectly suited for digital recording equipment
•Ideal for stringed instruments such as Violin, Cello, Acoustic Guitar, Harp and Piano.
Description
The AT2031 is the ideal microphone for stringed instruments in critical studio and live applications. Its permanently polarized element offers extended frequency response with a slight rise in the high frequency range for a more detailed sound. Its low self-noise and high SPL handling capability offer a wide dynamic range, perfectly suited for the most demanding applications.
Operation and Maintenance
The AT2031 requires 48V phantom power for operation.
Output is low impedance (Lo-Z) balanced. The signal appears across Pins 2 and 3; Pin 1 is ground (shield). Output phase is “Pin 2 hot”—positive acoustic pressure produces positive voltage at Pin 2.
To avoid phase cancellation and poor sound, all mic cables must be wired consistently: Pin 1-to-Pin 1, etc.
An integral 150 Hz high-pass filter provides easy switching from a flat frequency response to a low-end roll-off. The roll-off position reduces the pickup of low-frequency ambient noise (such as traffic, air-handling systems, etc.), room reverberation and mechanically coupled vibrations. To engage the high-pass filter, slide the switch toward the “bent” line.
Avoid leaving the microphone in the open sun or in areas where temperatures exceed 110° F (43° C) for extended periods. Extremely high humidity should also be avoided.
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20 series microphones |
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Element |
Fixed-charge back plate, |
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permanently polarized condenser |
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Polar Pattern |
Cardioid |
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Frequency Response |
20-20,000 Hz |
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Low Frequency Roll-Off |
150 Hz, 6 dB/octave |
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Open Circuit Sensitivity |
-34 dB (19.9 mV) re 1V at 1 Pa |
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Impedance |
85 ohms |
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Maximum Input Sound Level |
141 dB SPL, 1 kHz at 1% T.H.D.; |
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Noise |
17 dB SPL |
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Range (Typical) |
124 dB, 1 kHz at Max SPL |
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Signal-To-Noise Ratio |
77 dB, 1 kHz at 1 Pa |
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Power Requirements |
48V DC, 2.0 mA typical |
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Switches |
Flat, roll-off |
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Weight |
134 g |
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Dimensions |
143.0 mm long, 21.0 mm maximum body Ø |
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Output Connector |
Integral 3-pin XLRM-type |
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Accessories Furnished |
AT8405a stand clamp; windscreen; |
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soft protective pouch |
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In the interest of standards development, A.T.U.S. offers full details on its test methods to other industry professionals on request.
1 Pascal = 10 dynes/cm2 = 10 microbars = 94 dB SPL
1Typical, A-weighted, using Audio Precision System One.
Specifications are subject to change without notice.
frequency response: |
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polar pattern |
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330˚ |
0˚ |
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30˚ |
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<![if ! IE]> <![endif]>inBd |
300˚ |
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60˚ |
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10 dB |
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<![if ! IE]> <![endif]>Response |
270˚ |
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90˚ |
50 |
100 |
200 |
500 |
1k |
2k |
5k |
10k |
20k |
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Frequency in Hertz |
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240˚ |
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120˚ |
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LEGEND |
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12" or more on axis |
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LEGEND |
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Roll-o |
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210˚ |
150˚ |
200 Hz |
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1 kHz |
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180˚ |
8 kHz |
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SCALE IS 5 DECIBELS PER DIVISION |
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Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224 Audio-Technica Limited, Old Lane, Leeds LS11 8AG England
©2011 Audio-Technica U.S., Inc. audio-technica.com
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