The Sony ECM-678 is an electret condenser type short shotgun microphone with high quality audio performance for use in a variety of field production and broadcasting studio applications, and is particularly suitable for the Sony HDV™, DVCAM™ and XDCAM™ series of professional camcorders. The ECM-678 features high sensitivity, low inherent noise, and high durability. Its strong directional response characteristics make it possible to achieve clear pickup in environments with extremely strict requirements, and the built-in low-pass filter switch can effectively reduce environmental noise for easy use. Due to its excellent performance and high durability, the Sony ECM-678 is the ideal choice for high-quality sound acquisition applications.
This manual introduces the Sony ECM-678 electronic capacitor microphone, highlighting its high‑quality sound reproduction, compact gun‑type design, and built‑in low‑pass filter that reduces environmental noise. It also describes the microphone's durability features such as an anti‑vibration system for reliable operation in harsh conditions.
Technical specifications are listed, including sensor type, directivity, frequency response, sensitivity, self‑noise, power requirements, dimensions, and weight. The document also enumerates the supplied accessories and provides contact information for Sony's regional offices. This manual is written in Chinese.
| Sensor type | Electret condenser |
|---|---|
| Directivity | Unidirectional (super‑cardioid) |
| Frequency response | 40 Hz ~ 20 kHz |
| Sensitivity (1 kHz) | -28 dB |
| Self‑noise | ≤ 16 dB SPL |
| Power requirement | External 48 V + 4 V |
| Dimensions | G20 × 250 mm |
| Weight | 200 g |
The microphone covers a frequency range from 40 Hz to 20 kHz.
Its sensitivity is –28 dB at 1 kHz (0 dB = 1 V/Pa).