Shure KSM44A manual Specifications

134 dB SPL 150 dB SPL 140 dB SPL 152 dB SPL 139 dB SPL 151 dB SPL

131 dB SPL 147 dB SPL 137 dB SPL 149 dB SPL 136 dB SPL 148 dB SPL

SPECIFICATIONS

Cartridge Type	Dual-Diaphragm, Externally-Biased Condenser
Polar Pattern	Cardioid, Omnidirectional, Bidirectional
Frequency Response	20 to 20,000 Hz
Output Impedance	50 Ω
Attenuator Switch	15 dB
Low-Frequency Filter Switch	Flat, –6 dB/octave below 115 Hz, or –18 dB/octave below 80 Hz
Power Requirements	11–52 V DC phantom power (IEC 61938)
	5.8 mA, maximum
Common Mode Rejection (10 to 100,000 Hz)	>50 dB
Polarity	Positive pressure on diaphragm produces positive voltage on pin 2 with
	respect to pin 3
Net Weight	492 g (17.4 oz.)
Connector	Three-pin professional audio (XLR), male, balanced

		Cardioid		Omnidirectional		Bidirectional
Sensitivity (open circuit		–31 dBV/Pa† (29.8 mV)		–37 dBV/Pa† (14.8 mV)		–36 dBV/Pa† (16.8 mV)
voltage, @ 1 kHz, typical)
Self Noise (equivalent SPL,		4 dB SPL-A		6 dB SPL-A		7.5 dB SPL-A
A-weighted, typical)
Preamplifier Distortion (at 1				<0.001%*
kHz, 94 dB SPL)
Signal-to-Noise Ratio**		90 dB		88 dB		86.5 dB
Clipping	2500 Ω			9 dBV
Level (20 Hz	load
to 20 kHz, 1%
	1000 Ω
THD)				6 dBV
	load
Dynamic Range	2500 Ω	130 dB		134 dB		131 dB
(@ 1 kHz)	load
	1000 Ω	127 dB		131 dB		128 dB
	load
Maximum SPL (1 kHz at		PAD OFF	PAD ON	PAD OFF	PAD ON	PAD OFF	PAD ON
1% THD)*

2500 Ω

load

1000 Ω

load

*THD of microphone preamplifier when applied input signal level is equivalent to cartridge output at specified SPL **S/N ratio is the difference between 94 dB SPL and equivalent SPL of self noise, A-weighted

† 1 Pa=94 dB SPL

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