Output Channel − Anti-Feedback - QSC TouchMix-30 Pro User Manual

Output Channel − Anti-Feedback
Available on the Main L/R and Aux outputs, these
narrow, cut-only filters are used for dealing
with feedback.
1. Anti-Feedback tab
Feedback screen
2. – Engages or bypasses the
Filters In/Out
filters.
3.
Feedback Frequency
Feedback system automatically identifies and
displays suspected feedback frequencies.
4. When a suspected feedback
Manual Kill –
frequency is identified, touching this button
applies a filter at that frequency.
5.
Feedback Wizard –
Wizard assists in finding and cutting feedback-
prone frequencies. Touching this button opens
the Feedback Wizard which will guide the
operator through the process.
6. – Sets all the Filter controls and markers
Reset
to their factory default position. Note that the
Feedback Wizard will only use a filter if its Cut has
been set to 0.0.
7. Display – Shows the frequency and depth
(cut) of applied filters.
• = dB
Vertical scale
•
Horizontal scale
8. These markers are color-coded to correspond with their associated controls. Horizontal position indicates
Filter markers –
frequency. The amount of cut is indicated by a descending vertical line. Twelve filters - TouchMix-30 Pro, eight filters - TouchMix-8 and
-16.
NOTE: Markers and their associated frequency controls are not tied to a specific frequency band. Marker 1 may attenuate a high
frequency, while Marker 12 may attenuate a low frequency.
9. – The numbered buttons engage/disengage the filters.
Filter In/Out
10. – Sets the center frequency of a filter.
Freq
11. Cut – Adjusts amount of Cut (or attenuation) for a filter. Range is from 0.00 dB to -20.0 dB.
12. Increases or reduces the depth (amount of cut) for all the filters.
Filter Depth % –
13. Adjusts the width of the filter from a Q of 6 (0.05 octave) to a Q of 30 (0.24 octave).
Filter Q –
14. / – Navigates to the next or previous channel. The buttons cycle through the Input, Playback, Record, and FX channels,
Buttons
then loops back to Input 1. If you start in the Auxes, the buttons cycle through the Auxiliary outputs and the Main L/R channels.
15.
Channel Controls
there is no Aux Master channel selected, only the Main L/R mix is selected.
16. Controls – Output controls for the Main L/R outputs. See Channel Controls topic.
Main Channel
1001108-01-F
Anti
Feedback
– Selects the Anti-
Main Mix
L/R
Joe's Ears
Aux 1
Aux 2
– The Anti-
Aux 2
Aux 3
Aux 3
Aux 4
Aux 4
Aux 5
Aux 5
Aux 6
Aux 6
The Feedback
Aux 7
Aux 7
Aux 8
Aux 8
Aux 9
Aux 9
Aux 10
Aux 10
Aux 11
Aux 11
Aux 12
Aux 12
Aux 13
Aux 13
Aux 14
Aux 14
= frequency
– Output controls for selected channel. See Channel Controls topic. There are no controls displayed because
Press Anti-
OR Home
Feedback
Aux Outputs1-8
OR
Aux 1
Inputs 1-8
1
Anti-
Overview PEQ GEQ
15 Feedback
3
2
Feedback
Filters
Out In 124 Hz
Frequency
8
7
2 1 3 4 5
0
-5
10
-15
-20
20 50 100 200
9
1 2 3 4 5
Freq Freq Freq Freq Freq Freq
52.1 37.5 70.2 132 247 462
10
Hz Hz Hz Hz Hz Hz
Cut Cut Cut Cut Cut Cut
-15.0 0.0 0.0 0.0 0.0 0.0
11
dB dB dB dB dB dB
12
%
Filter Depth
84
55
Touch an
Touch an Aux
Aux Channel
Bank
or Main
Anti-
Feedback
Comp Auxes Presets Setup
4 5 6
Manual Kill Feedback Wizard Reset
6 7 8 9 10 11 12
0
-5
10
-15
-20
500 1K 2K 5K 10K 20K
6 7 8 9 10 11 12
Freq Freq Freq Freq Freq Freq
866 1.62k 3.0k 5.7k 10.7k 20.0k
Hz Hz Hz Hz Hz Hz
Cut Cut Cut Cut Cut Cut
0.0 0.0 0.0 0.0 0.0 0.0
dB dB dB dB dB dB
13
Filter Q
13.6
Touch
Anti-Feedback
Tab
Scene:
14
Default
Prev Next
Main
15 16
Cue
Main
L/R
10 10
5
L
u
AF
5
10
20
0
40
∞
Mute