Cardioid Condenser Boundary Microphone
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).
| 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 | 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 |
| Polar Pattern |  |
| Frequency Response |  |
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