Two-Way Power Shotgun Electret Condenser Microphone
The ECM-674 is a two-way powered shotgun, electret condenser-type microphone, which delivers excellent sound performance in field and studio production applications at an affordable price.
The ECM-674 offers an excellent sensitivity and a low inherent-noise level. It has a flat-and-wide frequency response and delivers extremely smooth and natural sound reproduction.
A two-way powering capability allows the ECM-674 to be driven by microphone power or batteries, making it suitable for both camcorder mounting and many other sound-gathering applications. Internal: AA-size battery operation. External: DC (40 to 52 V) operation.
In general, old batteries can leak and damage the equipment they are used in. The ECM-674 prevents this by continually detecting the output voltage of the battery and shutting off the power supplied to the electric circuit whenever the voltage drops beneath a certain threshold.
The built-in two-position (M, V) low-cut switch on the ECM-674 provides a simple method of reducing the effects of unwanted ambient noise.
ECM-674
| Capsule Type | Mono Electret Condenser |
| Frequency Response | 40 Hz to 20 kHz |
| Directivity | Uni-directional (super-cardioid) |
| Sensitivity *[1] | -36 dB ±3 dB |
| Output Impedance *[2] | 220Ω±20%, Balanced |
| Dynamic Range | Phantom: 107 dB or more Battery: 98 dB or more |
| Signal-to-Noise Ratio *[3] | 77 dB or more |
| Inherent Noise *[4] | 17 dB SPL or less |
| Induction Noise From External Magnetic Field *[5] | 0 dB SPL or less |
| Wind Noise *[6] | 50 dB SPL (without windscreen) 45 dB SPL or less (with windscreen) |
| Maximum Input Sound Pressure Level *[7] | Phantom: 124 dB SPL Battery: 115 dB SPL |
| Connector | XLR-3-12C (male) |
| Mic Cable | XLR-3 to XLR-3 500 mm 19.6 inches |
| Power Requirements | External: DC 40 V to 52 V
Battery: 1.5 V |
| Dimensions *[8] | φ20 x 200 mm φ13/16 x 7 7/8 inches |
| Mass | Approx. 7.3 oz with battery Approx. 6.5 oz without battery Approx. 208 g with battery Approx. 185 g without battery |
| Supplied Accessories | Windscreen (1) Stand adaptor (2) Short XLR cable Operating instructions (1) Mic spacer (2) Mic holder (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 |
