Shure DFR22 BROCHURE

AL1516 Printed in U.S.A. 15K 04/03 ©2003 Shure Incorporated.

SOFTWARE SPECIFICATIONS

HARDWARE SPECIFICATIONS

DFR22

BACK

FRONT

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 kΩ
Output: 120 Ω

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. Processing blocks add no latency.

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: -7º to 49º C (19º to 120º F)
Storage: -29º to 74º C (-20º to 165º F)

Dimensions

19 in x 10 in x 1 3/4 in

Weight

2.83 kg (6.25 lbs)

Furnished Accessories

Power Cable
5-pin DIN Shure Link Cable
Hardware Kit

5 Block Connector Terminals, 3-pin (for audio inputs and outputs, RS-232)
1 Block Connector Terminal, 6-pin (for control inputs)
4 Rackmount Screws and Washers

Optional Accessories

DRS-10 Wallplate unit with 10-position rotary switch for preset control

DFR

Automatic Feedback Reduction

5-, 10- and 16-filter single-channel and stereo modules
Frequency resolution: 0.1 Hz
Filter width: 1/10 to 1/70 octave
Filter depths: up to 18 dB

EQ & Shelving

Graphic Equalizers

10 and 30 band modules. Combining and Non-combining.
Up to 12dB boost, 18dB cut

Parametric Equalizers

Available in modules with 3, 5, 7, & 10 filters, plus cut/shelf filters
Bandwidth: 1/70 to 4 octaves
Up to 18 dB cut and boost per filter

Cut/Shelf Equalizer

High/Low shelf filters: 6, 12dB/octave slopes, 18dB boost/cut
High/Low cut filters: 6, 12, 18, 24 dB/octave slopes
Cut filter types: Butterworth, Bessel, and Linkwitz-Riley

Delay

Up to 2 seconds per delay block
10 seconds total of available delay memory
20 microsecond resolution

Crossovers and Splitter

Crossovers

2-way crossover and subwoofer modules
Independently adjustable slopes
Butterworth, Bessel, & Linkwitz-Riley up to 24 dB/octave
Adjustable polarity, muting and gain (+/-12 dB) per output

Splitter

2-way splitter

Dynamics Processing

Compressor/ Limiter

Versions Available: Soft/Hard Knee,

Stereo & Peak Stop (look ahead) Limiter
Attack: 1 ms to 200 ms, 0 ms for Peak Stop Limiter
Decay: 50 ms to 1000 ms
Ratio: 1:1 to Infinity:1

Gate and Downward Expander

Ratio 1:1 to Infinity:1
Attack: 1 to 200 ms
Decay: 50 ms to 1000 ms
Gate Hold Time: 0 to 500 ms

Automatic Gain Control

Ratio: 1:1 to 10:1
Attack: 200 ms to 3 seconds
Decay: 500 ms to 5 seconds
Maximum Boost: 12 dB

Ducker

Attack: 1 ms to 5 seconds
Hold: 1 ms to 10 seconds
Release: 1 ms to 10 seconds
Attenuation: 0 dB to – Infinity

Matrix Mixer

Route any input to any output
Independently adjustable crosspoint gain, muting and polarity

DFR22 Audio Processor with Feedback Reduction

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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.

Flexible. Customizable. Configurable.

The Shure DFR Difference.

Two Channels. A Powerful Processor.

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.

How DFR22 Functions as an Insert Processor.

How DFR22 Functions as a Monitor Processor.

How DFR22 Processes a Stereo Main Mix.

Full-Featured
Processing Power.

• DFR Automatic Feedback

Reducers

• 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

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

Processors include:

Contact your dealer to experience Soundplex®.
Smart DSP from Shure.

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.

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