AUDIO TECHNICA ATM250DE CONDENSER HYPER-CARDIOID MICROPHONE FOR KICK-DRUM

The Artist Series new kick-drum mic, the ATM250DE dual-element instrument microphone features cardioid condenser and hypercardioid dynamic capsules combined in a single housing. Audio-Technica's innovative use of two polar patterns is ideal for kick drum: the hypercardioid dynamic element focuses tightly on the aggressive attack of the beater, while the condenser captures the round tonalities of the shell. The elements are positioned in a perfect phase relationship, something practically impossible to achieve with two separate microphones. Includes a professional isolation clamp to provide secure mounting, versatile positioning and effective dampening of unwanted mechanical noise.

Audio-Technica's proven dual-element design features two elements (condenser and dynamic) enclosed in a single housing
Neodymium dynamic element provides punch and attack, while the condenser element captures the full audio spectrum
Elements are positioned in a perfect phase relationship, something practically unachievable with two separate microphones
Perfect for kick drum, guitar amps and instrument use
Integral 80 Hz HPF switch and 10 dB pad (condenser element)
Versatile mounting options and effective dampening of mechanical noise thanks to included AT8471 isolation clamp
Corrosion-resistant contacts from gold-plated XLRM-type connector
Rugged, all-metal design and construction for years of trouble-free use

Frequency Response: 40-20,000 Hz (condenser) 40-15,000 Hz (dynamic)
Low Frequency Roll Off: 80 Hz, 12 dB/octave (condenser)
Open Circuit Sensitivity: 49 dB (3.5 mV) re 1V at 1 Pa (condenser) -53 dB (2.2 mV) re 1V at 1 Pa (dynamic)
Impedance: 50 ohms (condenser) 600 ohms (dynamic)
Maximum Input Sound Level: 148 dB SPL, 1 kHz at 1% T.H.D. (condenser)
Dynamic Range: 122 dB, 1 kHz at Max SPL (condenser)
Signal to Noise Ratio: 68 dB, 1 kHz at 1 Pa (condenser)
Phantom Power Requiremens: 11-52V DC, 3.5 mA typical (condenser)
Weight: 320 g (11.3 oz)
Dimensions: 143.6 mm (5.65“) long, 55.0 mm (2.17“) diameter
Output Connector: Integral 5-pin XLRM-type
Cable: 5.0 m (16.5') dual shielded, 8-conductor cable, 5-pin XLRF-type connector at microphone, two 3-pin XLRM-type output connectors
Accessories: AT8471 isolation clamp for 5/8“-27 threaded stands; 5/8“-27 to 3/8“-16 adapter; soft protective pouch

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

• 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 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

• 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

• 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

• Especially for tom and snare recording
• Polar pattern: cardioid
• Frequency range: 40 - 18,000 Hz
• Impedance: 350 Ω
• Robust metal chassis
• Incl. special tom holder
• Bag included
• Dimensions: 63 x 41 mm
• Weight: 125 g