Description
Product details
The A231 is a large diaphragm condenser microphone built for the most discerning studio user. With its externally-biased “true condenser” capsule and low-noise circuitry, the A231 is able to capture the nuances of the human voice as well as the rich overtones of acoustic instruments with natural warmth and in stunning detail. An exceptionally consistent cardioid polar pattern focuses on the performance while offering smooth off-axis rejection.
The 33 mm condenser capsule of the A231 features a precision-tensioned diaphragm made from a specially formulated, heat-treated film with gold deposition distributed evenly to the far edges of the diaphragm. The result is a 25% greater effective diaphragm area when compared to the capsule of a typical large diaphragm microphone.
Behind the double-woven steel mesh grille of the A231, acoustic reflections and diffractions are minimized for transparent sound capture. The internal shock mount isolates the capsule from mechanical vibrations, eliminating the need for a bulky external shock mount. Proprietary impedance control between the capsule and circuitry ensures consistent and reliable performance across a wide range of environments.
Designed, machined, assembled, and tested by Audix in Wilsonville, Oregon.
Specifications
-
Transducer / Capsule Technology
33 mm externally-biased condenser capsule / 29 mm 3.4 micron gold-sputtered diaphragm -
Frequency Response
20 Hz – 20 kHz -
Polar Pattern
Cardioid -
Output Impedance
150 ohms -
Sensitivity
16 mV / Pa @ 1 kHz -
Signal to Noise Ratio
82 dB -
Maximum SPL
140 dB -
Dynamic Range
128 dB -
Equivalent Noise Level
12 dBA -
Operating Voltage
48 V (± 4 V) Phantom -
Connector
3-pin XLR m -
Materials / Finish
Body: Machined aluminum and gold-plated brass band Grille: Steel alloy -
Weight
330 g / 11.6 oz
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