ECM-674 (ECM674)

Affordable shotgun Electret condenser microphone

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Overview

The ECM-674 is an affordable shotgun-type electret condenser microphone, which delivers excellent sound performance in field and studio productions.
Superb Sound Quality
The ECM-674 offers an excellent sensitivity of -36 dB (0 dB=1 V/Pa.) and low inherent-noise level of less than 17 dB SPL. This allows the microphone to be used for clear voice pick-up even in noisy environments
Two-way Powering
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
Built-in Battery Liquid Leakage Protection Circuit
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.

Features

Flat-and-wide Frequency Response
The ECM-674 microphone has a flat-and-wide frequency response (40 Hz to 20 kHz) and provides sound reproduction that is extremely smooth and natural
Compact and Lightweight Design
The ECM-674 has been designed as a highly directional compact and lightweight shotgun microphone. It measures only 268 mm (10 5/8 inches) in length and weighs just 185 g (6.5 oz), maintaining good balance even when mounted on compact camcorders.
Built-in Low Cut Filter
The built-in two-position (M, V) low-cut switch provides users with a simple method of reducing the effects of undesired ambient noise.

Specifications

Audio Section
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
General Section
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 268 mm
φ13/16 x 10 5/8 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 LR cable (for camcorder use) (1)
Operating instructions (1)
Mic spacer (2)
Mic holder (1)
Notes
Note
*[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 = 20? Pa.
*[5] dB SPL/1E-7 T, 0 dB SPL = 20? Pa.
*[6] Wind noise at 2m/s (0 dB SPL = 20?Pa.)
*[7] 0 dB SPL = 20? Pa.
*[8] The values for dimensions are approximate.

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