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Shure KSM109

Pricing & Availability

  • MSRP: $305
  • Discontinued


KSM109 Documentation

CardioidShure KSM109

Cardioid Condenser Microphone

The KSM109 was an electret condenser microphone with transformerless output circuitry. It was introduced in 2002 and discontinued in 2009.

The mic had a fixed Cardioid pickup pattern. The capsule is believed to be a small-diaphragm electret design. Shure published the diaphragm composition (2.5-micron gold-sputtered Mylar) but not its size.

The mic included a foam windscreen (A3WS), clip (A25D), and vinyl pouch (A109ZB). Optional shockmount is p/n A55M or A55HM.

The KSM109/SL was discontinued in the spring of 2009. The final U.S retail price was $305.00. The KSM109/SL was replaced by the SM137; see link in sidebar.

The Shure KSM109 is also known as: KSM109/SL.

The mic was released in 2002.


Frequency Response - CardioidClick Graph to Compare!
KSM109 Cardioid Frequency Response Chart
Pickup Patterns Pads & Filters
Cardioid (8.9 mV/Pa; 20 - 20,000 Hz)
  • Pad: -15dB (Via Switch)
Capsule Dimensions Impedance SPL/Noise
Diameter n/a
Diaphragm gauge: 2.5 microns
150 Ohms (Low) Max SPL: 165 dB
Self-noise: 19.0 dB(A)
Weight Length Max Diameter Interface(s)
195g (6.88oz) 162mm (6.38'') 24mm (0.94'')
  • 3-pin XLR male (1)
Power Specifications
  • Requires phantom power
  • Phantom voltage: 11-52v

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