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The APM series are digital paging microphones equipped with a condenser microphone with cardiologic characteristics, mounted on a 30 cm long gooseneck. By means of a built-in compressor / limiter, the output level of the microphone signal is constantly maintained. The status of the reproduced signal is indicated on the front panel, to ensure the speaker that the message is clear and audible in all situations. Each console has 3 standard buttons (except the APM01 which has only PTT) with pre assigned functions: PTT (Push To Talk), Select all and Clear. All other buttons can be freely programmed, using the free APM configuration software. |
Unidirectional cardoid-pattern microphone with high sensitivity and extended frequency response.
Factory-fitted for direct connection to the AM4000 series, PR4092, EL2126 CD sintoamplifier and 1000 series amplifiers.
General Specs
- Plastic body with 320 mm gooseneck
- Pushbutton for momentary microphone activation
- Connections on screw terminals inside
Specifications
- Type:Desktop paging microphone with dinamyc capsule
- Directivity:Unidirectional - Cardioid
- Frequency Response:100Hz ÷ 12 kHz
- Microphone Sensitivity:- 71 dB ± 3
- Output impedance:500Ω
- Signal/noise ratio:40dB
- Connector:3 pole XLR
Size/Weight
- Height:270 / 10.62mm/inch
- Width:200 / 7.87mm/inch
- Depth:132 / 5.20mm/inch
- Net Weight:6 / 3.53kg/lbs
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Shure MX202B-C Microflex Overhead Cardioid Condencer Microphone
It is hard to believe that such small, unobtrusive microphones can produce such great sound,
but it's true. Available in black or white finishes, and with in line or plate mount preamps, the
Microflex? Overhead condenser microphones capture Shure quality sound in a compact, adjustable
package. Each model features a choice of interchangeable cardioid, supercardioid and omnidirectional
condenser microphone cartridges attached to a flexible, four inch gooseneck with a 30 foot cable.
The preamp options available offer easy installation in ceilings or microphone stands, and when combined
with the high sensitivity cartridge's wide frequency response, these microphones provide accurate sound
reproduction with a minimum of RF interference or electromagnetic hum.
Features:
Wide dynamic range and frequency response for accurate sound reproduction across the audio spectrum
Interchangeable cartridges that provide an optimal polar pattern choice for each application
Balanced, transformerless output for increased immunity to noise over long cable runs
Supplied stand-mount adapter for portable applications (in-line preamplifier versions only)
White or black finish that blends unobtrusively with most surroundings
Frequency Response
50 to 17,000 Hz
Output Impedance
180 ohms actual (EIA rated at 150 ohms)
Sensitivity (At 1,000 Hz, open circuit voltage*)
Cardioid: -35.0 dBV/Pa (17.8 mV)
Supercardioid: -33.5 dBV/Pa (21.1 mV)
Omnidirectional: -27.5 dBV/Pa (42.2 mV)
All values -12 dB at 0 gain; *1 Pascal = 94 dB SPL
Maximum SPL (1 kHz at 1% THD, 1 k ohm load)
Cardioid: 124.2 dB
Supercardioid: 122.7 dB
Omnidirectional: 116.7 dB
All values +6 dB at 0 gain
Equivalent Output Noise (A-weighted)
Cardioid: 28.0 dB SPL
Supercardioid: 26.5 dB SPL
Omnidirectional: 20.5 dB SPL
Signal to Noise Ratio (referenced at 94 dB SPL)
Cardioid: 66.0 dB
Supercardioid: 67.5 dB
Omnidirectional: 73.5 dB
Dynamic Range at 1 k ohm load
96.2 dB
100 dB at 0 gain
Common Mode Rejection
45.0 dB minimum
Preamplifier Output Clipping Level (1% THD)
-6.0 dBV (0.5 V)
-12 dBV at 0 gain
Polarity
Positive sound pressure on diaphragm produces positive voltage on pin 2 relative to pin 3 of output connector.
Power Requirements
11 to 52 Vdc phantom, 2.0 mA
Environmental Requirements
Operating Temperature Range: -18 to 57 degrees C (0 to 135 degrees F)
Relative Humidity: 0 to 95% | The Shure SM57 unidirectional dynamic microphone is exceptional for musical instrument pickup or for vocals. With its bright, clean sound and carefully contoured presence rise, the SM57 is ideal for live sound reinforcement and recording. It has an extremely effective cardioid pickup pattern which isolates the main sound source while minimizing background noise. In the studio, it is excellent for recording drums, guitar, and woodwinds. For musical instruments or vocals, the SM57 is a consistent choice of professional performers. It is also the standard microphone used on the podium of the U.S. President for over 30 years. Its outstanding performance, legendary reliability, and diversity of application make this "workhorse" the choice of performers, producers, and sound engineers the world over.
- Contoured frequency response for clean, instrumental reproduction and rich vocal pickup
- Professional-quality reproduction for drum, percussion, and instrument amplifier miking
- Uniform cardioid pickup pattern isolates the main sound source while reducing background noise
- Pneumatic shock-mount system cuts down handling noise
- Extremely durable under the heaviest use
- Frequency response: 40 to 15,000 Hz
| Frequency Range |
40 Hz to 15 kHz |
| Impedance |
150 Ohms |
| Load Impedance |
310 Ohms |
| Sensitivity |
56 dBV/Pa (Open Circuit Voltage, 1 kHz) |
| Color |
Gray |
| Mounting |
5/8"-27 Female, Mic Clip (Included) |
| Construction Material |
Steel, Steel Wire Grille |
| Dimensions |
ø: 1.26 x L: 6.18" / ø: 32 x L: 157 mm |
| Weight |
10.02 oz / 284 g |
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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
| This new mic is a performance / price breakthrough. It has an acoustically identical version of the legendary CK1 capsule that is permanently mounted. This combination can handle high output transients as well as subtle harmonics. Also included are switchable 75 and 150Hz 12dB per octave rolloff, and switchable -10 & -20 dB input pad. It is a single pattern (cardioid), and has a frequency response of 20 to 20kHz with 135 dB SPL. Requires 12 to 48V phantom power. Kit comes with bag, windscreen and clip.
For more than twenty years, the AKG C 451 with the CK 1 condenser capsule was a standard item on tour riders for sound companies and required by leading engineers for studio projects. When it was discontinued in 1993, there was still a big demand for this microphone. AKG now has an updated version of this classic microphone.
The new C 451B provides the same frequency response as the legendary CK 1 with the same slight high-end rise that was the signature of the original. This characteristic makes the C 451B an ideal tool for capturing signals rich in transients such as acoustic guitars, snare drums, hi-hats and for overhead micing of drum kits. The C 451B?s response eliminates the need for heavy EQ on these instruments.
The new C 451B has also benefited from newer electronic technology with machine soldering and surface-mount components that improve noise performance and make the microphone much more reliable than the original.
Other special features include switchable 10 dB and 20 dB preattenuation pads and switchable low cut filters at 75 Hz or 150 Hz. Standard accessories included are an SA 40 stand adaptor, W 90 windscreen and a rugged zippered bag. Each C 451B also comes with an individual frequency response printout.
Three-year warranty.
Specification
Polar pattern: cardioid
Frequency range: 20?20,000 Hz
Sensitivity: 9 mV/Pa (-41 dBV re 1 V/Pa)
Max. SPL for 0.5 % THD: 135/145/155 dB SPL (-0/-10/-20 dB)
Equivalent noise level: 18 dB-A to DIN 45 412
Signal/noise ratio (A-weighted): 76 dB
Preattenuation pad: switchable, 0, -10,-20 dB Bass cut filter: switchable to flat or 12 dB/octave at 75 Hz or 150 Hz
Electrical impedance: Recommended load impedance: >1.000 Ohms
Power requirement: 9?52 Volt phantom power to DIN 45 596/IEC 268-15
Current consumption: Connector: 3-pin male XLR
Finish: satin nickel plated
Size: dia.: 190 mm (0.7 in.); length: 160 mm (6.3 in.)
Net/shipping weight: 125/760 g (4.4 oz./1.7 lbs.)
Standard accessories: W 90 windscreen, SA 40 stand adapter |
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