Multi-Pattern Dual Diaphragm Microphone

Premium microphone with three polar pattern options (cardioid, omnidirectional, bidirectional).

 

  • Prethos® Advanced Preamplifier Technology: Class A, discrete, transformerless preamplifier provides  transparency, extremely fast transient response and no crossover distortion. Minimizes harmonic and intermodulation distortions.  
  • Groundbreaking specifications: 4dB of self-noise and max SPL of 131 dB for a total dynamic range of 127 dB – an increase of 7 dB that defines the new standard for cleanly nuanced audio capture
  • Multiple polar patterns–cardioid, omnidirectional and bidirectional–for maximum flexibility in a wide variety of recording applications
  • Dual 1 inch, externally biased, ultra-thin, 2.5 μm, 24 Karat gold-layered, low mass diaphragms provide superior frequency response
  • Premium electronic components and gold-plated internal and external connectors
  • Subsonic filter eliminates rumble from mechanical vibration below 17 Hz.
  • Switchable 15 dB pad for handling extremely high sound pressure levels (SPLs)
  • 3-position switchable low-frequency filter helps reduce unwanted stand vibration noise or counteract proximity effect
  • Integrated three-stage “pop” protection grille reduces plosives and other breath noise

Shure KSM44A: Large Diaphragm Multi-Pattern Condenser Microphone

$999.00Price

Cartridge Type

  • Dual-Diaphragm, Externally-Biased Condenser

Polar Pattern

  • selectable
  • Cardioid, Omnidirectional, Bidirectional

Frequency Response

  • 20 to 20,000 Hz

Output Impedance

  • 50 Ω

Sensitivity

open circuit voltage, @ 1 kHz, typical

Cardioid Omnidirectional Bidirectional
–31 dBV/Pa [1] (29.8  mV) –37 dBV/Pa [1] (14.8  mV) –36 dBV/Pa [1] (16.8  mV)

Maximum SPL

1 kHz at 1% THD [2]

  Cardioid Omnidirectional Bidirectional
PAD OFF 2500 Ω load 134 dB 140 dB 139 dB
1000 Ω load 131 dB 137 dB 136 dB
PAD ON 2500 Ω load 150 dB 152 dB 151 dB
1000 Ω load 147 dB 149 dB 148 dB

Signal-to-Noise Ratio [3]

Cardioid Omnidirectional Bidirectional
90 dB 88 dB 86.5  dB

Dynamic Range

@ 1 kHz

  Cardioid Omnidirectional Bidirectional
2500 Ω load 130 dB 134 dB 131 dB
1000 Ω load 127 dB 131 dB 128 dB

Clipping Level

20 Hz to 20 kHz, 1% THD

2500 Ω load 9 dBV
1000 Ω load 6 dBV

Self Noise

equivalent SPL, A-weighted, typical

Cardioid Omnidirectional Bidirectional
4 dB SPL-A 6 dB SPL-A 7.5 dB SPL-A

Common Mode Rejection

  • 10 to 100,000 kHz
  • ≥50 dB

Attenuator Switch

  • -15  dB

Low-Frequency Filter Switch

  • Flat, –6 dB/octave below 115 Hz, or –18 dB/octave below 80 Hz

Connector

  • Three-pin professional audio (XLR), male, balanced

Polarity

  • Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3

Power Requirements

  • 11–52 V DC [4]phantom power (IEC-61938) 5.8 mA, maximum

Net Weight

  • 492 g (17.4  oz.)

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