Shure DFR22 Audio Processor
Two Channels. A Powerful Processor. Shure's DFR has quickly become the industry standard for effective feedback reduction. The DFR22 builds on that reputation to provide an affordable full-featured 2x2 audio processor with Shure's drag-and-drop software. It's much more than feedback reduction. For many jobs, it's the only audio processor you'll need.
The Shure DFR Difference. Featuring enhancements to Shure's 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 feedback. 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 dynamic filters and restores the DFR to your ideally-tuned configuration after a specified amount of time. The DFR22 has all of the DSP processing you need to ensure the highest quality audio.
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 response and signal levels can be visually monitored in real time as parameters are adjusted.
Key Features:
- DFR Automatic Feedback 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
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
Digital-to-Analog, Analog-to-Digital 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 -- 100-240 Vac, 50/60 Hz (auto-switching), 1 A, maximum
Maximum Power Drain -- 45W
Temperature Range
Operating: -7 degrees to 49 degrees C (19 degrees to 120 degrees F)
Storage: -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 (6.25 lbs)
