Shure KSM9 Specifications
- Cartridge Type: Condenser (Electret Biased)
- Frequency Response: 50 to 20,000 Hz
- Output Impedance: 150 Ohms (actual)
- 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: >60 dB, 50 Hz to 20 kHz
- Polarity: Positive pressure on front diaphragm produces positive voltage on output pin 2 relative to pin 3
- Directional Polar Patterns: Cardioid,
- Sensitivity (typical; at 1000 Hz; 1 Pa = 94 dB SPL): -51 dBV/Pa
- Self-noise (typical, equivalent SPL; A-weighted, IEC 651): 22 dB
- Maximum SPL at 1000 Hz:
- 2500 Ohm load: 152 dB
- 1000 Ohm load: 152 dB
- Output Clipping Level*:
- 2500 Ohms load: 6.7 dBV
- 1000 Ohms load: 6.0 dBV
- Dynamic Range:
- 2500 Ohms load: 130 dB
- 1000 Ohms load: 130 dB
- Signal to Noise ratio**: 72 dB
- Dimensions and Weight: 49 mm (1 15/16 in.) maximum body
diameter, 191 mm (7.5 in.) long; 300
grams (10.6 oz).
Most sensitive to sounds directly in front of the microphone and is least sensitive to those in back. Cardioid is the most commonly used pattern in live sound applications. Its slightly wider pick-up pattern is more forgiving at picking up off-axis sound.
The narrower pattern provides greater rejection of off-axis sound and maximun gain before feedback. The supercardioid pattern is ideal for use in loud environments or applications in which sound sources are very close to each other.
The KSM9 requires phantom power and performs optimally with a 48 Vdc supply (IEC-268-15/DIN 45 596). However, it will operate with slightly decreased headroom and sensitivity with power supplies as low as 11 Vdc.
Three-pin (XLR) professional audio
Aluminum die cast construction with painted champagne or chacoal finish, and hardened steel mesh grille with painted finish.
*100 Hz to 20 kHz;THD < 1%.
**S/N ratio is difference between 94 dB SPL and equivalent SPL of self-noise A-weighted.