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Unidirectional Condenser Boundary Microphone

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The AT846/C is a wide-range condenser microphone with a unidirectional polar pattern. It is designed for unobtrusive table, ceiling or panel-mounted applications for high-quality sound reinforcement, teleconferencing, professional recording, television and other demanding sound pickup applications.

The AT846/C is equipped with UniGuard® RFI-shielding technology, which offers outstanding rejection of radio frequency interference (RFI). The microphone is RoHS compliant – free from all substances specified in the EU directive on hazardous substances.

The microphone should be placed on a flat, unobstructed mounting surface. The small diameter capsule near the boundary eliminates phase distortion and delivers clear, high-output performance.

The microphone requires 11V to 52V phantom power for operation. The microphone is enclosed in a heavy-duty die-cast case and protected by a two-layer steel mesh grille. The low-profile housing has a low-reflectance black finish. Isolators are included with the microphone for optional mechanical isolation from the mounting surface.

To mount the AT846/C in a ceiling or table top without the isolators, a 20.5 mm diameter hole is required. To mount the AT846/C with the isolators, a 23.5 mm hole is required. Place the isolators on either side of the hole to achieve mechanical isolation from the mounting surface. The small cardioid circle on the AT846/C bezel indicates the "front" of the microphone.

  • audio technica AT846/C
  • audio technica AT846/C

AT846/C Specifications


Fixed-charge back plate, permanently polarized condenser

Polar Pattern

Unidirectional (Cardioid in hemisphere above mounting surface)

Frequency Response

60 ~ 20,000 Hz

Open Circuit Sensitivity

-37 dB (14.1 mV) re 1V at 1 Pa


100 Ω

Maximum Input Sound Level

134 dB SPL, 1 kHz at 1% T.H.D.

Signal-To-Noise Ratio

>66 dB, 1 kHz at 1 Pa

Phantom Power

11~52V DC, 2 mA typical


48 g


64.6mm x 30.0 mm (Long X Diameter)

Output Connector

Integral 3-pin XLRM-type

Accessories Furnished

One pair isolators


audio technica support AT846-C.pdf - Operation Manual