Shure KSM109 - Manual (Page 6)

5
SPECIFICATIONS
* 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.
**S/N ratio is the difference between 94 dB SPL and equivalent SPL of self-noise A-weighted.
Cartridge Type Permanently Biased Condenser
Frequency Response 20-20,000 Hz (see Figure 2)
Directional Polar Pattern Cardioid (see Figure 3)
Output Impedance 150 Ω (actual)
Attenuation Switch 0 dB or 15 dB attenuation
Phantom Power
48 Vdc ± 4 Vdc (IEC-268-15/DIN 45 596),
positive pins 2 and 3
Current Drain 5.2 mA typical at 48 Vdc
Common Mode Rejection ≥ 50 dB, 20 Hz to 20 kHz
Polarity
Positive pressure on diaphragm produces positive
voltage on output pin 2 relative to pin 3
Dimensions and Weight
24 mm (0.95 in.) diameter, 162 mm (6.37 in.) long;
195 grams (6.9 oz.) (see Figure 4)
Sensitivity (typical, at 1000 Hz;
1 Pa = 94 dB SPL)
-41 dBV/Pa
Self-noise
(typical, equivalent SPL;
A-weighted IEC 651)
19 dB
Maximum SPL*
(Attenuator on)
5000 Ω load
2500 Ω load
1000 Ω load
150 (165) dB
144 (159) dB
139 (154) dB
Output Clipping Level*
5000 Ω load
2500 Ω load
1000 Ω load
15 dBV
9 dBV
3 dBV
Dynamic Range
(Attenuator on)
5000 Ω load
2500 Ω load
1000 Ω load
133 (136) dB
128 (130) dB
122 (125) dB
Signal to Noise Ratio** 75 dB