The 4104 Commentator's Noise Cancelling Ribbon Microphone is of British Broadcasting (BBC) design and used for reproducing high quality commentary speech from noisy surroundings by cancelling out a considerable degree of background noise.

The 4104 is not unduly affected by wind noise and can be used in air stream velocities up to 20 mph (32 km) without notable difference in speech quality. With the use of a simple windshield attachment good quality speech reproduction can also be achieved in winds ranging up to 40 mph (64 km) or more. Importantly, the polar response is effectively bi-directional allowing one or more commentators to make clear individual commentary close side by side without interference from mutual cross over talk.

This microphone is generally regarded as the leader in its field. Wherever it is essential to single out a speaker's voice without transmitting background noise, this is the choice of buyers from all over the world. Equally important is its application in noisy industrial environments; prompt information and explicit instruction may be matters of life and death in a shunting yard or rolling mill, and a noise-cancelling microphone of this quality is the most vital element in such communications.

Features

• Better than 30 dB average discrimination between voice and background noise
  
• Provides speech of broadcast quality completely free from breath noises
  
• Flat frequency response at the controlled talking distance
  
• Lightweight, robust construction
  
• Ideal for commentating and reporting purposes where background noise levels are high
  
• Good discrimination between wanted and unwanted sounds
  
• Clear individual commentary without mutual cross over talk

Specifications

• Ribbon: Pressure gradient transducer
  
• Polar Response: Bidirectional
  
• Frequency Response: 60 Hz to 12000 Hz
  
• Distortion: Less than 1% at 120 dB SPL
  
• Impedance: 300 OHM
  
• Sensitivity: -50dB W.R.T. IV/Pa.
  
• Body Housing: Brass perforated case with stainless steel nose and mouth screens, PVC covered handle designed to provide a natural holding position
  
• Connection: XLR 3-pin - Pin 1 screen - Pin 2 positibe - Pin 3 negative
  
• Finish: Brown enamel paint with brown PVC covered handle
  
• Dimensions: 200 mm L x 57 mm W x 76 mm D
  
• Weight: 283 g