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The ECM-678 is a shotgun, electret condenser-type microphone which delivers superior sensitivity of -28 dB (0dB=1V/Pa) and extremely low inherent noise of less than 16 dB SPL. This microphone balances the need for a compact size with its ability to deliver excellent performance. The result is a highly directional microphone that is only 250 mm in length.
| Capsule Type | Mono Electret Condenser |
| Frequency Response | 40 Hz to 20 kHz |
| Directivity | Uni-directional (super-cardioid) |
| Sensitivity *[1] | 28 dB +/-3 dB |
| Output Impedance *[2] | 200Ω±20%, Balanced |
| Dynamic Range | 111 dB or more |
| Signal-to-Noise Ratio *[3] | 78 dB or more |
| Inherent Noise *[4] | 16 dB SPL or less |
| Induction Noise From External Magnetic Field *[5] | 0 dB SPL or less |
| Wind Noise *[6] | 60 dB SPL or less (without screen) |
| Maximum Input Sound Pressure Level *[7] | 127 dB SPL |
| Connector | XLR-3-12C (male) |
| Mic Cable | XLR-3 to XLR-3 480 mm 18.9 inches |
| Power Requirements | External, DC 48 V +/-4 V |
| Dimensions *[8] | φ20 x 250 mm φ13/16 x 9 7/8 inches |
| Mass | Approx. 7 oz Approx. 200 g |
| Supplied Accessories | Windscreen (1) Stand adaptor (2) Short LR cable (for camcorder use) (1) Operating instructions (1) Mic spacer (2) Mic holder (1) Carrying case (1) |
| Notes | *[1] 0 dB = 1 V/Pa, at 1 kHz
*[2] Output impedance at 1 kHz *[3] A-weighted, 1 kHz, 1 Pa. *[4] 0dB SPL = 20µ Pa *[5] dB SPL/1E-7 T, 0 dB SPL = 20µ Pa. *[6] Wind noise at 2m/s (0 dB SPL = 20µPa.) *[7] 0 dB SPL = 20? Pa *[8] Dimensions are approximate |
