The AKG Model D 310
cardioid dynamic microphone

Description and Applications
Not much has come to light on this one so far. Similar to D 320 B, but with cardioid polar pattern. Slimmer than the D 330 and D 320, but service re­quires use of a soldering iron. There are no frequency response switches. Recommended for such applications where manipulation by the performer is not desired. D 310 S is identical to D 310, but with on/off switch, lockable in its “on” position.
 

Technical data

• Type: Pressure gradient
  
  
• Directional characteristics: Frequency independent cardioid
  
  
• Frequency range: 60 to 18,000 Hz
  
  
• Sensitivity at 1,000 Hz: 1.3 mV/Pa (0.13 mV/µb) ≅ −78 dBV, ref. 1 µb
  
  
• Impedance at 1,000 Hz: 270 ohms
  
  
• Max. sound pressure for THD of 1%: 50 Pa ≅ 128 dB SPL
  
  
• Hum sensitivity at 50 Hz: 3 µV/5 µT at 100 Hz: 6 µV/5 µT
  
  
• Permissible climactic conditions: Temperature range: −10° C to +65° C
  Relative humidity: 90% (20° C to 65° C)
  
  
• Connector: 3-pin XLR type
  
  
• Housing material: die-cast zinc alloy, non-reflective nickel plated
  
  
• Dimensions: 45 × 190 mm (1.8 × 7.5 inch)
  
  
• Net weight: 240 g (8.5 oz)

 

Descriptive text is from the AKG web site at http://www.akg-acoustics.com/