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The KSM44/SL is a multiple pattern (cardioid, omnidirectional, bidirectional), externally biased, dual large diaphragm condenser microphone with extremely low self-noise (7dB). Developed to meet the needs of studio recording musicians, the warm, rich sound of the KSM44 delivers exceptional performance, tailored to deliver vivid reproduction of voice for the most critical recordings. The KSM44 also offers great flexibility in a variety of recording applications, working well on acoustic and amplified instruments, as its capacity for managing high SPLs accommodates loud sound sources such as drums and guitar amplifiers.
| Cartridge Type |
Externally biased condenser |
| Frequency Response |
20 to 20,000 Hz
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| Output Impedance |
150 ohms (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 (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 |
| Directional Polar Patterns |
Cardioid |
Omnidirectional |
Bidirectional |
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 @ 1000 Hz |
|
| 2500 ohm load (Attenuator on) |
132 (149) dB |
138 (151) dB |
137 (150) dB |
| 1000 ohm load (Attenuator on) |
127 (144) dB |
132 (145) dB |
131 (144) dB |
| Output Clipping Level* |
|
| 2500 ohm load |
7 dBV |
7 dBV |
7 dBV |
| 1000 ohm load |
1 dBV |
1 dBV |
1 dBV |
| Dynamic Range |
|
| 2500 .ohm load |
125 dB |
128 dB |
127 dB |
| 1000 ohm load |
120 dB |
122 dB |
121 dB |
| Signal to Noise ratio** |
87 dB |
84 dB |
84 dB |
| Dimensions and Weight |
55.9 mm (2.20 in.) maximum body
diameter, 187 mm
(7.37 in.) long; 490.5 grams (17.30 oz). |
| <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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Features
Dual 1-inch, externally biased, ultra-thin, 2.5 micron, 24-karat
gold-layered, low mass, Mylar ®
diaphragms provide superior transient response
Class A, discrete, transformerless preamplifier for transparency,
extremely fast transient response and no crossover distortion;
minimizes harmonic and intermodulation distortions
Full-range frequency response (20 Hz - 20 KHz) for an extremely
accurate reproduction of voice and instruments
Extremely low self noise (7 dBA) for critical studio vocal recording
Premium electronic components and gold-plated internal and external
connectors
Subsonic filter eliminates rumble from mechanical vibration below
17 Hz
15 dB attenuation switch for handling high input SPL sound sources
3-position switchable low-frequency filter virtually eliminates
unwanted background noise and controls proximity effect
Durable zinc die-cast housing and hardened low carbon steel grille
to protect cartridge from accidental drops or misuse
Uniform polar response provides natural off-axis response for
critical recording
Integrated three-stage pop protection grille to guard against wind
and breath noise
Internal shock mount to reduce unwanted handling and stand noise
Replacement cartridge: RPM130
Performance Characteristics
Extended frequency response
Very low self-noise
Exceptional low-frequency reproduction
High output level
High input SPL capability
No cross-over distortion
Extremely uniform polar response
Superior common mode rejection and suppression of radio frequency
interference
Applications
The KSM44/SL is designed as a premium vocal microphone for studio
recording. Microphone use, however, is a matter of personal taste. Here
is a non-exhaustive list of common applications:
Vocals -- solo, background, voice-over
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 have
significant effects on the sound obtained when miking any sound source.
We encourage users to experiment with these variables to achieve the
best overall sound.
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