The Shure Model 300
bidirectional ribbon microphone

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General
The Model 300 ribbon microphone is a rugged stand-mounted unit with a wide range frequency response and a bidirectional polar pattern. The Model 300 is an excellent choice for broadcasting or recording studios as well as for critical sound reinforcement ap­pli­ca­tions. The microphone’s symmetrical front and rear and its greatly reduced side pickup make it ideal for such uses as across-the-table interviews or dialogue, stages with loudspeakers directly to the side or overhead, and combined pickup of facing instrumental groups in recording sessions.

The Model 300 is supplied with a Voice/Music switch that provides either flat or rolled off low frequency response and with an impedance-selection switch allowing choice of three rated impedances: “L”—38 ohms, “M”—150 ohms, and “H”—high impedance. A built-in vibration isolator and internal ribbon protection make the microphone suitable for a wide variety of applications.

Microphone Features

• Ribbon microphone with wide range response
  
  
• Switch selectable flat or rolled off low end
  
  
• Bidirectional polar pattern, ideal for interviews
  
  
• Internal ribbon protection assures reliable operation under rigorous operating conditions
  
  
• Built-in vibration isolator and lifetime swivel
  
  
• Convenient impedance selection switch, microphone usable with all amplifiers

Specifications

• Frequency response: 40 to 15,000 Hz (see Figure 1)
  
  
• Polar Pattern: Bidirectional—uniform with frequency, symmetrical about axis
  (see Figure 2)
  
  
• Switches: Rotary Voice/Music response switch and rotary impedance selection switch
  
  
• Swivel and Shock Mount Assembly: Positive action, permits tilting head through 135°, shock-mounted with internal rubber vibration isolator, suitable for mounting on stand with ⁵⁄₈"-27 thread
  
  
• Case: Dark gray enamel die casting and light gray brass screen
  
  
• Net Weight: 581.5 grams (1 lb, 4 oz)
  
  
• Cartridge: R30
  
  
• Introduced: 1952
  
  
• Discontinued: 1982

From the 1977 Shure Professional Products booklet.

Shure 300 with Shure S33B desk stand.

Download the Data Sheet for this mic.

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