56
‘Configuring Processing Module Insert Types’ on page 30
. If using a GEQ to tune the system, try
each of the available QUICK CURVE options available in the menu to see if they get you close to the tone you’re after.
Make any further adjustments using the GEQ’s individual frequency bands.
4�
Repeat for stage monitor, zone, or delay fill speakers if required.
6. Ring Out The System With AFS
After system EQ has been applied, performing the ring-out procedure allows you to squeeze a little more gain out of the
system before the onset of feedback. The AFS Wizard does a great job of taking the guesswork out of the ring-out procedure.
However, if you prefer to ring out the system manually, you can.
To manually ring out the system using AFS:
1�
Set up all the microphones then 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 (or aux send master if ringing
out stage monitors). Your target gain when ringing out the system will be around 2-5 dB above this “performance level”
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 (or aux send master if ringing out stage monitors) all
the way down.
4�
Go into the AFS module.
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)’ starting on page 56
for further information on the available AFS TYPE options.
8�
Go to the FIXED FILTERS parameter and set it to 12.
9�
Slowly raise the main mixer faders (or aux send master if ringing out stage monitors) until you reach your target gain
(described in step 1) or run out of Fixed filters, whichever happens first.
10�
Now lower the main mixer faders (or aux send master if ringing out stage monitors) back to performance level (the level
at which you had the mixer’s main faders or aux send master during sound check in step 1).
TIP:
AFS analyzes a mono-summed signal when ringing out stereo and LCR systems and if these signals are out
of phase, AFS will not be able to properly detect the feedback and suppress it. If feedback occurs and is not promptly
suppressed by AFS, it could indicate that there are phase issues with either the signals coming from the mixer or
loudspeakers. If this happens, ensure the signals coming from the mixer are all in phase with each other and all
loudspeakers are in phase with each other.
11�
Lower the FIXED FILTERS setting to change all unused Fixed filters to Live filters. Make sure you don’t lower it too far
as you don’t want to remove set Fixed filters.
12�
Set the AFS MODE to LIVE.
13�
Go to the TYPE parameter and select the desired width for the Live filters – select the SPEECH/MUSIC option for the
best all around real-time feedback protection. See
‘Advanced Feedback Suppression (AFS)’ starting on page
56
for further information on the available AFS TYPE options.
14�
The system is now ready for use and any available Live filters will be available for automatic, on-the-fly feedback
