DFR22 Audio Processor

DFR22 Digital Signal Processor
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Two Channels. A Powerful Processor. The Shure DFR has quickly become the industry standard for effective feedbackSustained “howl” when a mic 'hears' a loudspeaker already reproducing that mic's sound.Read moreGo to the glossary reduction. The DFR22 builds on that reputation to provide an affordable full-featured 2x2 audio processor with drag-and-drop software. It's much more than feedbackSustained “howl” when a mic 'hears' a loudspeaker already reproducing that mic's sound.Read moreGo to the glossary reduction. For many jobs, it's the only audio processor you'll need.

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  • Description
  • Features
  • Specs
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  • In the box

The Shure DFR Difference. Featuring enhancements to a patented Adaptive Notch Filter Algorithm, the DFR22 includes single-channel and stereo processing blocks with up to 16 precision notch filters that automatically seek out and reduce feedbackSustained “howl” when a mic 'hears' a loudspeaker already reproducing that mic's sound.Read moreGo to the glossary. With widths between 1/10 and 1/70 of an octave, these adaptive filters affect only the problem frequencies, maximizing system stability and sound integrity. In addition, Auto Clear mode removes dynamicDynamic mics have a simple, rugged construction and can handle very high sound pressure levels.Read moreGo to the glossary filters and restores the DFR to your ideally-tuned configuration after a specified amount of time.

Processing blocks in the DFR22 can be applied in any order, to any input or output. You can also link processors for more efficient global control. Copy and paste processing blocks to any input or output to duplicate processors across multiple channels.

With the DFR22, you can design the entire system, save it to disk, and load it at the job site for easy setup. The DFR22 also allows real-time design changes, so you can add, subtract, or change processing blocks as you tune the system. It makes setup a breeze. And ensures that you get the best possible customized processor for your application. Frequency responseThis is the range of frequencies, from the lowest to the highest, that a mic can pick up.Read moreGo to the glossary and signal levels can be visually monitored in real time as parameters are adjusted. 

  • DFR Automatic FeedbackSustained “howl” when a mic 'hears' a loudspeaker already reproducing that mic's sound.Read moreGo to the glossary Reduction
  • Parametric and Graphic Equalizers
  • Cut/Shelf Equalizer
  • Compressors/Limiters
  • Automatic Gain Control
  • Gate/Downward Expander
  • Ducker
  • 2-Way Crossover
  • Subwoofer Processor
  • Splitter
  • Delay Processors
  • 2x2 Matrix Mixer
  • Frequency ResponseThis is the range of frequencies, from the lowest to the highest, that a mic can pick up.Read moreGo to the glossary: 20 Hz - 20 kHz
  • Dynamic RangeThis is the difference between the queitest and loudest sound that a mic can pick up.Read moreGo to the glossary: 110 dB minimum A-weighted, 20 Hz to 20 kHz
  • Sampling Rate: 48 kHz
  • Conversion: 24 bit
  • ImpedanceThis describes how resistant an electrical circuit is to the flow of electricity passing through it.Read moreGo to the glossary Input: 10 kΩ
  • ImpedanceThis describes how resistant an electrical circuit is to the flow of electricity passing through it.Read moreGo to the glossary Output: 120 Ω
  • Maximum input level:

    +24 dBu minimum

  • Maximum output level:
    • +24 dBu
    • +12 dBu (with 12 dB pad)
    • +6 dBu (with 18 dB pad)
  • Total harmonic DistortionTotal Harmonic Distortion is a measure of how much electrical noise a device produces. Read moreGo to the glossary :

    < 0.05%, +4 dBu, 20 Hz to 20 kHz

     

  • Propagation Delay: <1.5 ms
  • Operating Voltage: 100 - 240 Vac, 50/60 Hz (auto-switching), 1 A maximum
  • Maximum Power Drain: 45 W
  • Dimensions: 483 mm x 248 mm x 44,5 mm
  • Weight: 2830 g
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