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Shure DFR22 2x2 Audio Processor with Notch Filtered Feedback Suppression, 20 Hz to 20 kHz Frequency Response

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About the Shure DFR22

The Shure DFR22 is a two-input, two-output digital audio processor with feedback reduction. It features a software interface with "drag and drop" controlled set-up and is ideal for installed sound reinforcement applications such as houses of worship, theaters and meeting facilities. The unit is also a powerful setup tool in live music applications.

Using the graphical user interface, processors can be placed anywhere in the signal path. The 2 x 2 matrix mixer allows either or both inputs to be routed to either or both outputs, with additional controls for levels and polarity. The unit stores sixteen presets and provides 24-bit conversion, 48 kHz sampling and a minimum dynamic range of 100 dB.

The computer interface for the DFR22 mimics the functional block diagrams used in sound system design. This makes the software incredibly easy to learn, because the interface seems immediately familiar to sound professionals. Presets can be built and edited entirely by clicking, dragging and dropping with the mouse.

A security feature ensures that the device cannot be tampered with after it is installed. User access can be completely restricted so that the user cannot change any settings, or use the front panel controls. End-user control can also be customized to allow access to certain settings and not to others.

Shure DFR22 Includes

  • Shure DFR22 2x2 Audio Processor
  • AC Power Cable
  • 5-pin DIN Shure Link Cable
  • Hardware Kit
  • Shure Warranty

Shure DFR22 Features

  • DFR Automatic Feedback Reduction
  • Parametric and Graphic Equalizers
  • Cut/Shelf Equalizer
  • Automatic Gain Control
  • 2-Way Crossover
  • Subwoofer Processor
  • Delay Processors

Shure DFR22 Specifications

Frequency Response 20 Hz to 20 kHz +/- 1 dB
Dynamic Range 110 dB minimum, A-weighted, 20 Hz to 20 kHz
Sampling Rate 48 kHz
D/A, A/D Conversion 24 bit
Impedance Input: 10 kilohms
Output: 120 ohms
Input Clipping Level +24 dBu minimum
Output Clipping Level +24 dBu
+12 dBu (with 12 dB pad)
+6 dBu (with 18 dB pad)
Total Harmonic Distortion < 0.05%, +4 dBu, 20 Hz to 20 kHz
Propagation Delay from Input to Output <1.5 ms
Polarity Input to output: non-inverting (inverting optional)
Operating Voltage 100 to 240 Vac, 50/60 Hz (auto-switching), 1 A, maximum
Maximum Power Drain 45W
Operating Temperature -7 degrees to 49 degrees C (19 degrees to 120 degrees F)
Storage Temperature -29 degrees to 74 degrees C (-20 degrees to 165 degrees F)
Dimensions 482.6 mm x 247.7 mm x 44.4 mm (19 in. x 9.75 in. x 1.75 in)
Weight 2.83 kg (6.23 lbs)
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