Audio Technica ES947 Cardioid Condenser Boundary Microphone

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The new Engineered Sound. Contractor-exclusive innovations for every acoustical challenge. And safe haven from RFI.

This low-profile cardioid condenser boundary microphone is recommended for unobtrusive table-, ceiling-, or panel-mount applications in high-quality sound reinforcement, professional recording and teleconferencing. Designed for permanent installation, the microphone is equipped with a self-contained power module with an XLRM-type output connector, eliminating the need for an external power module. Protected by a rugged all-metal case with a two-layer steel mesh grille, the microphone has a cardioid pattern for enhanced gain before feedback and improved signal-to-noise ratio. It is available in two colors: black (ES947) and white (ES947W). Designed for surface-mount applications such as high-quality sound reinforcement, professional recording and teleconferencing


  • Low-profile element provides uniform cardioid polar pattern with 120º acceptance angle
  • Mounts unobtrusively in table-tops, ceilings and wall panels
  • Self-contained power module with XLRM-type output connector
  • Rugged all-metal case with a two-layer steel mesh grille
  • Isolators provide mechanical dampening of mounting-surface vibration
  • Requires 11V to 52V DC phantom power
  • UniGuard® RFI-shielding technology offers outstanding rejection of radio frequency interference (RFI)
  • Available in two colors: black (ES947) and white (ES947W)
  • RoHS compliant—free from all substances specified in the EU directive on hazardous substances


[edit] Specs

  • ELEMENT Fixed-charge back plate, permanently polarized condenser
  • POLAR PATTERN Half-cardioid (Cardioid in hemisphere above mounting surface)
  • FREQUENCY RESPONSE 40-12,000 Hz
  • OPEN CIRCUIT SENSITIVITY -42 dB (7.9 mV) re 1V at 1 Pa
  • IMPEDANCE 200 ohms
  • MAXIMUM INPUT SOUND LEVEL 142 dB SPL, 1 kHz at 1% T.H.D.
  • DYNAMIC RANGE (typical) 113 dB, 1 kHz at Max SPL
  • SIGNAL-TO-NOISE RATIO 65 dB, 1 kHz at 1 Pa
  • PHANTOM POWER REQUIREMENTS 11-52V DC, 2 mA typical
  • WEIGHT 64 g (2.3 oz)
  • DIMENSIONS 69.0 mm (2.72") long,
  • 30.0 mm (1.18") diameter
  • OUTPUT CONNECTOR Integral 3-pin XLRM-type
  • ACCESSORY FURNISHED One pair isolators


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