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CAD Audio-Astatic Commerical 2220VP

Jun 6, 2011 5:16 PM, by John McJunkin

An IP-controllable button-style continuously variable mic.


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I received one of Astatic’s 2220VP mics to play with, along with a Biamp Systems Nexia digital signal platform system intended for use as a controller. A system like this is necessary for control over the variable pattern. Your computer is not necessary unless you plan on controlling via IP, otherwise the mic or mics can be directly controlled without the computer. I was able to plug in and get the system networked very easily. Astatic makes control blocks for the Audia or Nexia DSP system available via the Internet (or on a CD-ROM), and with these installed into the software, IP control is quite simple. The output of the mic is divided necessarily into two tails, which takes up two input channels in your system. Changing the relative input level of each of these two channels is what determines the mic’s pattern. Astatic specifies the following patterns as resulting from an initial setting of 0 on the A channel and 40 on the B channel to the reverse of that (40 on the A channel and 0 on the B channel): omnidirectional, sub-cardioid, uni-directional wide, cardioid, uni directional tight, supercardioid, hyper-cardioid, and figure eight. It’s quite a simple and effective mechanism.

As has been my prior experience with Astatic’s variable pattern mics, the 2220VP sounds very good. It is more than sufficient for capturing speech in a business or house-of-worship environment, which is no surprise presuming that it uses the same element as the excellent Astatic choir mic I’ve used before. The capacity to continuously vary its polar pattern via IP is a very powerful convention that can nicely enhance the quality of the audio delivered by the professional. I’d definitely recommend looking into it.

John McJunkin is the principal of Avalon Podcasting in Chandler, Az. He has consulted in the development of studios and installations and provides high-quality podcast production services.

Product Summary

  • Company: CAD Audio-Astatic Commercial
    www.cadaudio.com
  • Product: 2220VP Microphone
  • Pros: Unique ability to remotely vary polar pattern
  • Cons: Two channels of input taken up by each mic
  • Applications: Boardroom, house-of-worship, installation market
  • Price: $499

Specifications

  • Operating Principle: Condenser
  • Polar Pattern: Continuously variable
  • Frequency Response: 90Hz -17KHz
  • Sensitivity: -32dBV (25mV) @ 1 Pa
  • Impedance: 120Ω
  • Maximum SPL: 120dB, 1% THD, 1KHz
  • Self Noise: 22dBA
  • Power Requirements: P12, P24, P48, 4mA
  • Connector: 3-pin XLRM-type





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