Omni-Directional Lavalier Microphone

The ECM-44 is an affordable alternative to the traditional hand held microphone and being ‘hands free’ it allows the presenter to concentrate on her/his performance

The ECM-4 is available with three different types of termination.

ECM-44B  comes with a male XLR.

ECM-44BC comes with a 4-pin locking plug for use with wireless transmitters that have HIROSE SMC9-4S connector.

ECM-44BMP comes with a 3.5mm locking jack for use with WRT-805 and UWP series wireless transmitter


Capsule Type Electret Condenser
Frequency Response40 Hz to 15kHz
Sensitivity *[1]B Type. -53.0 dB ±3 dB
BC Type. -40.0 dB (10 mV)
BMP Type. -40.0 dB (10 mV)
Output Impedance *[2]B Type. 250Ω±20%, Balanced
BC Type. 2.5kΩ±30%, Unbalanced
BMP Type. 2.5kΩ±30%, Unbalanced
Dynamic Range90 dB or more
Signal-to-Noise Ratio *[3] 62 dB or more
Inherent Noise *[4] 32 dB SPL or less
Induction Noise From External Magnetic Field *[5]5 dB SPL or less
Wind Noise *[6] 40 dB SPL or less (with windscreen)
Maximum Input Sound Pressure Level *[7]122 dB SPL
ConnectorB type. Supplied with XLR-3-12C (male) connector in power supply unit (single AA size battery)
BC type. Supplied with Sony 4-pin (SMC9-4P) connector
BMP Type. Supplied with ø3.5 mm, 3-pole mini plug
Mic Cable B Type. 9.8 feet 3 m
BC Type. 3.9 feet 1.2 m
BMP Type.3.9 feet 1.2 m
BPT Type. 9.8 feet 3 m
LM Type. 5.25 feet 1.6 m
Power RequirementsB Type. DC 1.5 V (AA size battery) or +48 V phantom power
BC Type. DC 1.1 V to 10.0V
BMP Type. DC 1.1 V to 10.0V
Battery Operating TimeB Type Approx. 6000 h (LR6)
Power ConsumptionB Type. Internal battery: 0.3 mA
BC Type. 0.4 mA or less,
BMP Type. 0.4 mA or less
Dimensions *[8]BC, BMP Type φ8.5 x 14.5 mm (Mic head) φ11/32 x 19/32 inches (Mic head)
B Type. φ8.5 x 14.5 mm (Mic head) φ20.0 x 126 mm (Power unit XLR type) φ13/16 x 5 inches (Power unit XLR type) φ11/32 x 19/32 inches (Mic head)
MassB Type. Approx. 4.3 oz (with power supply unit) Approx. 121 g (with power supply unit)
BC Type. Approx. 24 g Approx. 0.8 oz
BMP Type. Approx. 24 g Approx. 0.8 oz
Supplied AccessoriesUrethane type windscreen (1)
Single/horizontal type tie clip (1)
Operating instructions (1)
Mic case (1)
Optional AccessoriesWind screen pack
Horizontal single-clip pack
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 = 20?Pa.)
*[7] 0 dB SPL = 20? Pa
*[8] Dimensions are approximate

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