Beyerdynamic DT-109

dt109-sqr.png
dt109-sqr.png

Beyerdynamic DT-109

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The DT-109 has been the standard headset microphone combination for live, remote broadcasting, studio, film and TV production. The headphone transducers feature extended frequency response and adjustable, noise-cancelling microphone provides clear, audible speech transmission.

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Specs:

Headset

  • Transducer type: Dynamic
  • Operating principle: Closed
  • Frequency response: 30 - 20,000 Hz
  • Nominal impedance: 400 Ω ± 10% per cartridge*
  • Nominal SPL at 1 kHz: 94 dB
  • THD: < 1%
  • Power handling capacity: 1000 mW / 124 dB
  • Ambient noise attenuation: approx. 20 dBA
  • Sound coupling to the ear: Circumaural
  • Weight (without cable): 390 g

Microphone

  • Transducer type: Dynamic
  • Operating principle: Pressure gradient
  • Frequency response: 40 - 12,000 Hz
  • Polar pattern: Hypercardioid
  • Output voltage: approx. 2.5 mV at a distance of 5 cm 
  • Nominal impedance: 200 Ω
  • Load impedance: ≥ 1000 Ω