The Sony ECM-77 is a miniature omni-directional lavalier microphone designed for professional broadcast, sound reinforcement and recording applications. The condenser element features a miniature profile allowing it to be easily concealed in performance and broadcast situations. The omni-directional pattern provides even frequency and sensitivity response at the direct and off-axis sections of the microphone capsule.
The ECM-77 provides a wide frequency response of 40Hz - 20kHz. The wide frequency response enables the microphone to accurately reproduce audio signal from a wide variety of sources. The ECM-77 is manufactured with a variety of connectors to accommodate various input devices, this version features a 3.5mm (1/8") mini connection for use with the WRT-805 and UTX-B1 beltpack transmitters. Phantom power is supplied via the connected body-pack transmitters.
| Transducer | Electret Condenser |
| Polar Pattern | Omnidirectional |
| Frequency Response | 40 Hz - 20 kHz |
| Dynamic Range (Typical) | Greater than 90 dB |
| Signal-to-Noise Ratio | 64 dB @ 1 kHz |
| Maximum Input Sound Level | 120 dB @ 1 kHz, (1% THD) |
| Power Requirements | Phantom (48v DC) |
| Output Impedance | 150 Ohms +/-20% (1 kHz) Balanced |
| Output Connectors | 1/8" Mini-Plug with Locking Mechanism for Use with the WRT-805A Beltpack Transmitter. |
| Case | Protective Carrying Case |
| Pad | None |
| Low Frequency Roll-Off | None |
| Applications | Radio, Television and Broadcast. |
| Dimensions | .5 x .25" (12.5 x 5.6mm) LxW |
| Weight | 0.053 oz. (1.5 g) |