Shure KSM44 - Manual (Page 8)

6
English
SPECIFICATIONS
Cartridge Type Externally biased condenser
Frequency Response 20 to 20,000 Hz
(See Figures 3, 5, 7)
Output Impedance 150
Ω
(actual)
Attenuation Switch 0 or 15 dB attenuation
Low Frequency
Response Switch
Flat; -6 dB/octave below 115 Hz; -18 dB/octave below 80 Hz
Phantom Power 48 Vdc
"
4 Vdc (IEC-268-15/DIN 45 596), positive pins 2 and 3
Current Drain 5.4 mA typical at 48 Vdc
Common Mode
Rejection

50 dB, 20 Hz to 20 kHz
Polarity Positive pressure on front diaphragm produces positive voltage on
output pin 2 relative to pin 3
Dimensions and
Weight
55.9 mm (2.20 in.) maximum body diameter, 187 mm (7.37 in.) long;
490.5 grams (17.30 oz)
Directional polar
Patterns
Cardioid
(See Figure 4)
Omnidirectional
(See Figure 6)
Bidirectional
(See Figure 8)
Sensitivity
(typical; at 1000 Hz;
1 Pa = 94 dB SPL)
–31 dBV/Pa –37 dBV/Pa –36 dBV/Pa
Self-noise
(typical, equivalent SPL;
A-weighted (IEC 651))
7 dB 10 dB 10 dB
Maximum SPL* 2500
Ω
load
(Attenuator on)
132 (149) dB 138 (151) dB 137 (150) dB
1000
Ω
load 127 (144) dB 132 (145) dB 131 (144) dB
Output Clipping
Level*
2500
Ω
load
7 dBV 7 dBV 7 dBV
1000
Ω
load 1 dBV 1 dBV 1 dBV
Dynamic Range
2500
Ω
load
125 dB 128 dB 127 dB
1000
Ω
load 120 dB 122 dB 121 dB
Signal to Noise ratio 87 dB 84 dB 84 dB
*
20 Hz to 20 kHz;THD < 1%. THD of the microphone preamplifier when applied input signal is equivalent to the cartridge output at specified
SPL.