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Type Electret Condenser
Frequency Response 60~18,000 Hz
Polar Pattern Cardioid,rotationally symmetrical about
microphone axis, uniform with frequency
Sensitivity(at 1,000Hz) -70dB*(0.32mV)*0dB=1V/μbar
Output Impedance 400Ω
Phasing Positive pressure on diaphragm produces
positive voltage on pin 2 with respect to pin 3
Connector Three-pin professional audio connector
(male XLR type)
Case. Metallic enamel-painted die cast metal body
with hardened, matte-finished steel grille
Net Weight 230 grams (8.1 oz)
Touch Noise Super low
Power Supply 9-52V phantom power or battery 1.5V AA
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Audio Frequency Response 50 Hz - 16,000 Hz
Case Material Die cast zinc
Connector Type 3-pin XLR
Element Dynamic
Finish Textured Satin Black
Impedance, Low-Z balanced 600 Ω
Mic Type Instrumental
Open Circuit Voltage 2.2 mV/Pascal
Polar Pattern Supercardioid
Power Requirement Passive
Wired/Wireless Wired
Weight Net 8.32 oz (236 g)
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Precise artistic work deserves precise artistic craftsmanship. A classic by now, the CMS Series CK 1 capsule from AKG was a best seller from the moment it was launched in 1969. Comprising a range of interchangeable capsules and preamps as well as then innovative, dedicated accessories, the CMS Series from AKG quickly became a legend. It was discontinued in 1993. Responding to growing demand from recording engineers, AKG decided to produce the C 451 B with identical acoustical behaviour of the popular original C 451 EB + CK 1 microphone again, with dramatically improved specifications and outstanding price/ performance. The capsule of the new version is fixed permanently to the preamp to eliminate the mechanical problems of the screw joint. Using an extremely light diaphragm, the new C 451 B is almost totally insensitive to handling noise. An all-metal body provides excellent protection from RF interference and the microphone is rugged enough to give excellent results even under very harsh conditions.
The C 451 B is an excellent tool for accurately capturing signals rich in transients such as drums, overhead miking, or other instruments with a percussive sound. The airy sound, high overload limit of the capsule and electronic circuitry, and improved engineering details of the C 451 B are a solid foundation for creating another legend.
The matched pairs consist of two microphones that are within 1 dB to each other in sensitivity and also within 1 dB to each other in the range of 200 Hz to 15,000 Hz of the individual frequency response when used in cardioid mode and are selected from a large quantity of individual microphones using the described criteria by using a proprietary computer program.
Using this matched pair for stereo recordings utilizing various techniques will provide for a good and stable balance without frequency-dependent shifting of the stereo panorama.
The kit includes all the standard accessories of the individual package along with a stereo bar and proof of performance charts in an attractive carrying case (Soundtool case, middle size).
Features:
- Identical acoustics of the legendary CK 1.
- Rugged construction.
- Ruler-flat on-axis frequency response.
- Precise, nearly frequency independent cardioid.
- Extremely accurate signal transfer.
- Transformerless output stage for minimum distortion at low frequencies.
- Protected against electrostatic and magnetic interference.
- Selectable 10-dB and 20-dB preattenuation pads.
- Switchable highpass filter (75 Hz or 150 Hz, 12dB/octave).
- Operates on phantom power to DIN/IEC between 12 V and 48 V.
- Complete with SA 40 stand adapter and W 90 windscreen.
- Each microphone comes with its own individual frequency response plot.
Specifications:
- Polar pattern: Cardioid
- Frequency range: 20 to 20,000 Hz
- Sensitivity: 9 mV/Pa (-41 dBV)
- Max. SPL: 135/145/155 dB (0/-10/-20 dB) (k=0,5%)
- Equivalent noise level (CCIR 468-3): 29 dB
- Equivalent noise level: 18 dB-A
- Signal/noise ratio (A-weighted): 76 dB
- Preattenuation pad: 0 dB, 10 dB, 20 dB selectable
- Bass filter: Flat, 12 dB/octave at 75 or 150 Hz, selectable
- Impedance: 1000 ohms
- Supply voltage: 9 to 52 V phantom power to DIN 45596
- Current consumption:
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A high performance mini-condenser for sound reinforcement and recording. Great for instruments or drums. The ultra-uniform pickup pattern provides high gain before feedback and excellent rejection of unwanted noise.
Other features include:
- Mew A98D flexible drum mount
- SPL handling to 160dB
- frequency response of 20 to 20,000Hz and included preamplifier
- shock mount and windscreen
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The Shure KSM137 is an end-address condenser microphone with a cardioid polar pattern. Designed for studio use, yet rugged enough for live applications, the KSM137 can withstand extremely high sound pressure levels (SPL). Its low self-noise and extended frequency response make it ideal for recording musical instruments.
Features
- A highly consistent cardioid polar pattern
- 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
- Switchable 15 dB pad for handling extremely high sound pressure levels (SPLs)
- 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 reduces background noise and counteracts 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 KSM137 are listed below. Microphone use, however, is a matter of personal taste. The KSM137 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.
Suggested Applications
Acoustic Guitar
Acoustic Bass
Cymbals
Brass/Woodwinds
Orchestra
Ensemble Vocals
Piano
Strings
Room Ambience
Live Recording
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The super-cardioid e 609 instrument microphone has been specially developed for miking guitar cabs face on and extremely close to the signal source.
Pick-up pattern : Super-cardioid
Frequency response : 40.....15000 Hz
Sensitivity in free field, no load (1kHz) : 1,5 mV/Pa
Nominal impedance : 350 Ohm
Min. terminating impedance : 1000 Ohm
Dimensions : 55 x 34 x 134 mm
Weight : 140 g
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