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.

Full-Featured Processor Power

The DFR22 has all of the DSP processing you need to ensure the highest quality audio.

Flexible. Customizable. Configurable.

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

Audio Processor with Feedback Reduction Grag-and-drop 방식으로 다양하고 뛰어난 성능의 프로세서와 놀라운 성능의 feedback 감쇄기를 결합한 2×2 Audio Processor

Spec sheet (pdf)

CAD drawing (zip)

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

100­240 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)