Shure DFR22 Manual
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Shure DFR22 Manual

Shure DFR22 Manual

Audio processor with feedback reduction
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Download this manual See also: Installation Manual, Manual
DFR22
Audio Processor
with Feedback Reduction
200 Shure Incorporated
Printed in U.S.A.
27B8813 (Rev. )

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  • Page 1 DFR22 Audio Processor with Feedback Reduction 200 Shure Incorporated Printed in U.S.A. 27B8813 (Rev. )

  • Page 2: Important Safety Instructions

    ! IMPORTANT SAFETY INSTRUCTIONS ! READ these instructions. USE only with a cart, stand, tripod, bracket, or table KEEP these instructions. specified by the manufacturer, or sold with the HEED all warnings. apparatus. When a cart is used, use caution when FOLLOW all instructions.

  • Page 3: Features

    The DFR22 is ideal for installed sound reinforcement applications, such as houses of worship, theaters, and meeting facilities. It is also a powerful setup tool in live music applications.

  • Page 4: Front Panel

    7. Output Connectors ( XLR). These active, cross–coupled, balanced outputs can be used with balanced or unbalanced in- 2. Shure Link Interface. Allows linking of up to 16 Shure Link de- puts. They can be switched between +4 dBu/–10 dBV line–lev- vices, which may be accessed by a computer.

  • Page 5: Default Presets

    When the DFR BYPASS LED illumi- filters are in use and an additional feedback frequency is detected, nates, the feedback reducer is disengaged. the DFR22 replaces the oldest existing dynamic filter with a new fil- ter at a new frequency. Changing Presets Establishing the Auto Clear Function.
  • Page 6 (See Figure 3.) This filter is called a notch filter, since it affects a narrow section of the audio spectrum. If the feedback does not stop, the filter depth is increased. By default, filters in the DFR22 are deployed as HIGH Q filters. As a High Q filter gets deeper, its Q increases up to a Q of 101 (1/70th of an octave).

  • Page 7: Audio Connections

    Once power is applied, the DFR22 Audio Processor takes approxi- mately 5 seconds to initialize. When initialization is complete, the Input/Output LEDs will flash, as shown in Figure 7. The DFR22 is ready to use once the LEDs stop flashing.

  • Page 8: Computer Connections

    ENGLISH 12 dB and 18 dB Output Pads Each DFR22 output has a 12 dB pad and an 18 dB pad that can be NOTE: The Output meters indicate the signal level present at the engaged through the software interface. Use these pads when con- digital-to-analog converters.
  • Page 9 NOTE: Use the DFR22 software to configure the control pins so that they match the attached control hardware. You can also use the software to assign minimum and maximum gain values for each control, as well as the gain increment for up/down volume control buttons. Refer to the Control Pin section of the Online Help or to the Online User Guide.
  • Page 10 10 Kohm audio taper potentiometer. However, you can use the Potentiometer Calibration Wizard in the DFR22 software to Ground Switch configure the DFR22 for use with any 10 Kohm, 20 Kohm, 50 (momentary) Kohm, or 100 Kohm linear or audio taper potentiometer. GAIN CONTROL PIN CONNECTIONS USING SWITCHES...

  • Page 11: Specifications

    ..... . . 95C8247 5-pin DIN Shure Link Cable ....

  • Page 12: Information To User

    Shure Incorporated (“Shure”) hereby warrants that this product will be free from defects in materials and workmanship for a period of two years from the date of purchase. At its option Shure will repair or replace the defective product and promptly return it to you, or refund the purchase price.
  • Page 13 United States, Canada, Latin America, Caribbean: 5800 W. Touhy Avenue, Niles, IL 60714-4608, U.S.A. Phone: 847-600-2000 U.S. Fax: 847-600-1212 Intl Fax: 847-600-6446 Europe, Middle East, Africa: Shure Europe GmbH, Phone: 49-7131-72140 Fax: 49-7131-721414 Asia, Pacific: Shure Asia Limited, Phone: 852-2893-4290 Fax: 852-2893-4055...

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