KSM27
Large single-diaphragm, side-address
Condenser Microphone
Designed for studio use but rugged enough for live applications, the KSM27 has extremely low self-noise, and an extended frequency response specially tailored for vocal tracking and instrument recording.
Features
KSM27/SL with shock mount, champagne finish, Phantom power required
- Cardiod polar pattern
- 1 inch, externally biased, ultra-thin, 24 Karat gold-layered, low mass, Mylar® diaphragm provides superior transient response
- Class A, discrete, transformerless preamplifier for transparency, extremely fast transient response and no crossover distortion, while minimizing harmonic and intermodulation distortions
- Premium electronic components and gold-plated internal and external connectors
- Subsonic filter eliminates rumble from mechanical vibration below 17 Hz
- Switchable 15 dB pad for handling extremely high sound pressure levels (SPLs)
- 3-position switchable low-frequency filter helps reduce unwanted background noise or counteract proximity effect
- Integrated three-stage 'pop" protection grille reduces plosives and other breath noise
- Internal shock mount reduces handling and stand noise
Performance Characteristics
- Extended frequency response
- Low self noise
- Exceptional low-frequency reproduction
- High output level
- High input SPL capability
- No crossover distortion
- Extremely uniform cardiod polar response
- Superior common mode rejection, suppression of radio frequency interference
Applications
Microphone use is a matter of personal taste, and the KSM27 may be used for a variety of applications other than those listed:
- Voice -- solo, background, voice-over, broadcasting
- Acoustic instruments -- such as piano, guitar, drums, percussion, strings
- Electric instruments such as guitar and bass
- Wind instruments -- brass and woodwind
- Low frequency instruments -- such as double bass, electric bass, kick drum
- Overhead miking -- drums or percussion
- Ensembles -- choral or orchestral
- Room ambiance pick-up -- guitar amplifier or drums
Specifications
- Cartridge Type
- Externally Biased Condenser
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- Frequency Response
- 20 to 20,000 Hz
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- Directional Polar Pattern
- Cardioid
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- Output Impedance
- EIA Rated at 150 ohms (140 ohms actual)
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- Attenuation Switch
- 0 or 15 dB attenuation
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- Low Frequency response switch
- flat; -6 db/octave below 115 Hz;
- -18 dB/octave below 80 Hz
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- Phantom Power
- 48 Vdc +/- 4 Vdc (IEC26815/DIN 45 596), positive pins 2 and 3
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- Current Drain
- 5.4 mA typical at 48 Vdc
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- Common Mode Rejection
- >50 dB, 20 Hz to 20 kHz
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- Polarity
- Positive pressure on diaphragm produces positive voltage on output pin 2 relative to pin 3
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- Dimensions and Weight
- 53.0 mm (2.08 in.) maximum body diameter, 156.2 mm (6.15 in.) long;
- 642 grams (22.6 oz.)
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- Sensitivity (typical, at 1000 Hz; 1Pa = 94 dB SPL)
- -37 dBV/Pa
-
- Selfnoise (typical, equivalent SPL;
Aweighted, IEC 651)
- 14 dB
-
- Maximum SPL at 1000 Hz
- 2500 ohm load (Attenuator on): 137 (152) dB
- 1000 ohm load (Attenuator on): 132 (147) dB
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- Output Clipping Level*
- 2500 ohm load: 7 dBV
- 1000 ohm load: 1 dBV
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- Dynamic Range
- 2500 ohm load: 123 dB
- 1000 ohm load: 118 dB
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- Signal to Noise ratio**
- 80 dB
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- *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 difference between 94 dB SPL and equivalent SPL of self-noise A-weighted.
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