The Audio-Technica ES947C/TB3 is a miniature cardioid condenser boundary microphone designed for discreet surface-mount installations and features a TB3-to-XLR output for clear audio capture.
The Audio-Technica ES947C/TB3 is a miniature cardioid condenser boundary microphone designed for professional sound pickup in environments where a low-profile, inconspicuous aesthetic is required. This microphone delivers clear and highly intelligible audio for conferencing, recording, and monitoring applications while occupying a minimal footprint on mounting surfaces.
The ES947C/TB3 features a low-profile element that provides a uniform cardioid polar pattern. With a 120° acceptance angle, the microphone focuses on the desired sound source while minimizing background noise. This directional pickup makes it an effective solution for tabletop, ceiling, or panel installations in demanding acoustic environments.
Engineered for longevity and reliability, the microphone is housed in a rugged all-metal case with a two-layer steel mesh grille. To protect signal purity, Audio-Technica incorporates UniGuard RFI-shielding technology. This provides outstanding rejection of radio frequency interference (RFI), ensuring the audio remains free from noise caused by mobile devices or other electronic equipment.
The ES947C/TB3 simplifies the signal chain with a self-contained power module and a TB3M (mini-XLR) output connector. This design eliminates the necessity for an external power module, streamlining the installation process. The microphone includes a TA3F-to-XLR cable, allowing for immediate integration with standard XLR inputs. The device requires 11V to 52V DC phantom power for operation.
Designed specifically for surface-mount applications, the ES947C/TB3 is suitable for mounting in tables, walls, and ceilings.
| Element | Fixed-charge back plate, permanently polarized condenser |
| Polar Pattern | Cardioid |
| Frequency Response | 70-15,000 Hz |
| Open Circuit Sensitivity | -38 dB (0 dB = 1V/Pa, 1 kHz) |
| Output Impedance | 100 ohms |
| Maximum Input Sound Level | 135 dB SPL (1 kHz at 1% THD) |
| Dynamic Range | (typical) 110 dB (1 kHz at max SPL) |
| Signal-to-Noise Ratio | 69 dB (1 kHz at 1 Pa, A-weighted) |
| Phantom Power Requirements | 11-52V DC, 2 mA |
| Weight | 31 g (1.1 oz) |
| Dimensions | 60.5 mm (2.38") long, 20.0 mm (0.79") head diameter |
| Output Connector | TB3M-type |
| Accessories Included | Rubber isolator (x 2), nut, 7.6 m (24.9') microphone cable (TA3F to XLRM) |
| Length | 3 In. |
|---|---|
| Width | 2 In. |
| Height | 6 In. |
| Weight | 1 lbs |
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