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KSM44 Large Dual-Diaphragm
Microphone |
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Product Code:
KSM44 Large
Dual-Diaphragm Microphone
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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.
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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
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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
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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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Specifications |
Cartridge
Type |
Externally biased condenser |
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 |
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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* |
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2500 ohm
load |
7
dBV |
7
dBV |
7
dBV |
1000 ohm
load |
1
dBV |
1
dBV |
1
dBV |
Dynamic
Range |
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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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