User's Manual

6. Ring Out The System With AFS

Ringing out the sound system for feedback before use allows you to squeeze a little more gain out of the system before the

onset of feedback and can help ensure you’re not right at the edge of feedback during the performance. The AFS Wizard does

a great job of taking the guesswork out of ringing out the sound system for feedback. However, if you prefer to ring out the

system manually, you can. The benefits of doing so is the ability to select different filter width settings for the Fixed and Live

filters, and precisely determine how many Fixed filters can be used to maximize the system’s gain before feedback – freeing up

all remaining filters for Live mode use during the performance.

To manually ring out the system using AFS:

1� Perform a sound check and set up a rough mix for all microphones which will be active during the performance. When

done, take note of the mixer’s main output fader positions – your target gain when ringing out the system will be around

5 dB above this setting.

2� If noise gates are being used on any of the active mics – including vocal effect processors with built-in noise gates –

bypass them before ringing out the system. You can re-enable them once the ring-out procedure is complete.

3� Have the musicians stop playing and turn the main mixer faders all the way down.

4� Go into the AFS module by pressing the AFS button.

5� Turn AFS on.

6� Go to the MODE parameter and set it to FIXED.

7� Go to the TYPE parameter and select the desired width for the Fixed filters – select the MUSIC option for the most

precise and inaudible feedback suppression. See ‘Advanced Feedback Suppression (AFS)’ on page 31 for

further information on the available AFS TYPE options.

8� Go to the FIXED FILTERS parameter and set it to 12.

9� Ensure no sound is present at any of the microphones then slowly raise the main mixer faders until you reach your target

gain (described in step 1) or run out of Fixed filters, whichever happens first, then lower the main mixer faders back to

performance level (the level at which you had the mixer’s main faders during sound check in step 1).

10� Lower the FIXED FILTERS setting to change all unset Fixed filters to Live filters. Make sure you don’t lower it too far as

you don’t want to remove set Fixed filters.

11� Set the AFS MODE to LIVE.

12� Go to the TYPE parameter and select the desired width for the Live filters – select the MUSIC/SPEECH option for the

best all around real-time feedback protection. See ‘Advanced Feedback Suppression (AFS)’ on page 31 for

further information on the available AFS TYPE options.

13� The system is now ready for use and any available Live filters will be available for on-the-fly feedback suppression during

the performance.

NOTE: When ringing out the system in Fixed mode, any sound detected by AFS will trigger filters to be set. Therefore,

make sure the microphones are active, but there is no signal present at the mics when AFS is active in Fixed mode.

7. Add Finishing Touches

The system is now ready for use. Additional processing can now be applied to add the finishing touches. For example,

subharmonic synthesis can be applied to enhance the system’s bass response and compression can be applied to add a touch

of mixbus-style compression. For tips on setting these processing module settings, see ‘Subharmonic Synthesis (SUB)’

on page 35 and ‘Compressor (COMP)’ on page 37.