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OmnidirectionalApex Electronics 220

Omnidirectional Pencil Condenser Microphone

The Apex 220 is an omnidirectional electret condenser. The 220 is intended for real time analyzer and test equipment use.

It uses a miniature (like ~6mm) electret omnidirectional capsule, and transformerless impedance conversion circuitry. It is designed to produce a flat/linear frequency response, which is useful for measuring the response of loudspeakers and rooms.

These microphones have many applications around the recording studio as well, although their high self-noise level (24dBA in the case of the Apex 220) usually precludes use on quiet acoustic sources.

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Pickup Patterns Pads & Filters
Omnidirectional (0.7 mV/Pa; 20 - 20,000 Hz)
Capsule Dimensions Impedance SPL/Noise
Diameter n/a
250 Ohms (Low) Max SPL: 105 dB
Self-noise: 24.0 dB(A)
Weight Length Max Diameter Interface(s)
105g (3.70oz) 146mm (5.75'') 10mm (0.39'')
  • 3-pin XLR male (1)
Power Specifications
  • Requires phantom power
  • Phantom voltage: 15 - 48v

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