Nevada Radio

Heil PR-77BK

Professional quality Dynamic Microphone





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Heil PR 77

Heil PR 77 Microphones are professional-quality dynamic microphone for use in commercial broadcast, recording, podcasts and any application that requires a smooth flat response over a wide frequency range, excellent transient response, great speech articulation and low IMD. 

These microphones are also great in Amateur Radio applications.

PR 77s achieve their exceptional performance with a large 1.5 in. low-mass voice coil encompassed by a powerful magnet structure using a mixture of neodymium, iron and boron. Additionally, special attention has been paid to the phasing plug assembly. The entire bottom of the element allows unwanted audio from the rear and sides to enter from all 360 degrees resulting in rear rejection of over -40 dB. Little to nothing is heard from the rear while the front pattern allows the user to move about freely in front of the large diameter microphone with no change in response.

PR 77 details:

  • Element Type: Dynamic
  • Output Connection: 3 pin XLR
  • Frequency Response: 40 Hz to 18 kHz (music-no filter); 80 Hz to 18 kHz (voice-filter on)
  • Polar Pattern: Cardioid
  • Impedance: 600 ohms nominal
  • Weight: 24.5 oz.
  • Max Sound Pressure Level (SPL): 146 dB
  • Output Level: -51 dB at 1 kHz
  • Rear Rejection: at 180 degrees off axis (behind the mic) 40 dB down

Heil PR 77 mics feature a two position switch allowing the selection of the best characteristics for voice or music. The voice position rolls the audio off at 80 Hz at -6 dB per octave while the music selection removes the filter and the entire audio spectrum of 40 Hz to 18 kHz is present.

Requires CC1 range XLR connector lead to connect to Amateur Transceivers 

  • CC1-XLR i8 Icom                          Blue         8 Pin Plug
  • CC1-XLR K8 Kenwood/Alinco Red 8 Pin Plug
  • CC1- XLR KM Kenwood/Alinco Red Modular Plug
  • CC1- XLR Y8   Yaesu   Yellow 8 Pin Plug
  • CC1- XLR YM               Yaesu    Yellow Modular Plug
  • CC1-XLR Y-BAL                Yaesu             Orange 8 Pin Plug   
  • CC1-XLR/XLR3                         Standard XLR lead       

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