Filter Width; Scm820 Application - Shure Digital IntelliMix SCM820 Manual

7. Once the system has stopped feeding back, you can continue by further raising the level and repeating the process for
additional frequencies. Typically you can raise the gain 3 dB to 9 dB above the level at which feedback first occurred.
8. The remaining (Dynamic) filters will deploy as needed when the system is in use.
Note: Depending on the setup of the sounds system, the main PA signal may be separate from the monitor mix signal. Each feedback path should include a
DFR for the maximum gain before feedback.
Assigning DFR
Two DFR blocks are assignable to any channel input or mix output. When using two or less microphones, assign the DFR to
those channels to prevent feedback from routing to the mix bus. Additionally, if a microphone is designated for a chairperson or
host, DFR should be applied to that channel to ensure that remains stable and does not feed back.
Apply DFR to a mix bus when using multiple non-stationary microphones or when trouble frequencies are feeding back simul-
taneously in multiple microphone channels.

Filter Width

The DFR offers two width options for notch filters. By default, filters in the DFR are deployed as High Q filters. As a high Q filter
gets deeper its Q increases up to 101 (1/70th of an octave). You can also set filters to deploy at Low Q. Low Q filters affect a
slightly wider range of frequencies by maintaining a Q of 58 (1/40th of an octave) as they deepen. To change the setting for an
existing filter, select the Q-Width drop-down menu in the filter row.
New Filter Q: This setting determines the Q width for new Unlocked (Dynamic) frequencies as deployed by DFR.

SCM820 Application

The SCM820 application enables comprehensive control of the mixer. The application is accessible from any computer. Use
the application for the following functions:
• Manage mixers from a remote location.
• Customize IntelliMix parameters.
• Form large automixes with custom link groups.
• Assign the direct outputs in the signal path.
• Configure redundant or split networks.
• Set up Shure Digital Feedback Reducer (DFR) for up to two channels in each mixer.
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