>> Features
- - A mechanical polar pattern switch for highly consistent cardioid and true omnidirectional polar patterns. Provides flexibility in a wide variety of recording applications
- Ultra-thin, 2.5 micron, 24 karat gold-layered, low mass Mylar® diaphragm for superior transient response
- Class A, discrete, transformerless preamplifier for transparency, extremely fast transient response, no crossover distortion, and minimal harmonic and intermodulation distortion
- Premium electronic components, including gold-plated internal and external connectors
- Subsonic filter eliminates low frequency rumble (less than 17 Hz) caused by mechanical vibration
- Three-position switchable pad (0 dB, 15 dB, and 25 dB) for handling extremely high sound pressure levels (SPLs)
- Three-position switchable low-frequency filter to reduce background noise and counteract proximity effect
Performance Characteristics
- Extended frequency response
- Low self-noise
- Exceptional reproduction of low-frequency sounds
- Can withstand high sound pressure levels (SPL)
- High output level
- No crossover distortion
- Uniform polar response
- Superior common mode rejection and suppression of radio frequency interference
Applications
Some typical applications for the KSM141 are listed below. Microphone use, however, is a matter of personal taste. The KSM141 may be used for a variety of applications other than those listed.
- Acoustic instruments -- such as piano, guitar, drums, percussion, strings
- 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
Both the acoustic environment and microphone placement strongly affect the sound obtained from miking a source. You may need to experiment with microphone placement and room treatments to achieve the best overall sound for each application.
>> Specifications
- Cartridge Type : Permanently Biased Condenser
- Frequency Response : 20 to 20,000 Hz
- Directional Polar Pattern : Cardioid/Omnidirectional
- Output Impedance : 150 ohms (actual)
- Attenuation Switch : 0 dB, 15 dB, or 25 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 (IEC26815/DIN 45 596), positive pins 2 and 3
- Current Drain : 4.65 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 : 20 mm (0.8 in.) diameter, 146 mm (5.75 in.) long ,156 grams (5.5 oz.)
- Sensitivity (typical, at 1000 Hz; 1 Pa = 94 dB SPL) : -37 dBV/Pa
- Selfnoise (typical, equivalent SPL; A-weighted, IEC 651) : 14 dB
- Maximum SPL
5000 ohm load (Attenuator on): 145 (160, 170) dB
2500 ohm load (Attenuator on): 139 (154, 164) dB
1000 ohm load (Attenuator on): 134 (149, 159) dB
- Output Clipping Level*
5000 ohm load: 15 dBV
2500 ohm load: 9 dBV
1000 ohm load: 3 dBV
*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.
- Dynamic Range
5000 ohm load: 131 dB
2500 ohm load: 125 dB
1000 ohm load: 120 dB
- Signal to Noise Ratio** : 80 dB
**S/N ratio is difference between 94 dB SPL and equivalent SPL of self-noise A-weighted.