®

Application 2 - Insert On the Main Stereo Outputs of a Mixing Console

This application is ideal for dedicated feedback suppression on the outputs of a mixing con-

sole. This application provides the user with dual channels of 24 filters of feedback suppres-

sion per channel.

1. Connect the stereo output inserts of the mixer to the inputs of the AFS 224.

2. Connect the outputs of the AFS 224 to the insert returns of the console.

3. Apply power to the mixer and amplifiers.

For maximum performance and proper operation, the input signal to the dbx 224 must cause

the “0” dBu LED to light fairly consistently and the “+10” dBu LED to light occasionally. Hookup

at the insertion point since the insert points on most mixers are pre output fader. This allows

the proper signal level to be fed to the 224 without the channel or output fader affecting the

level as the fader is moved up or down. Be sure to check the mixer’s manual for the nominal

operating point for the insert jacks, and then select the +4dBu or -10dBV switch on the back of

the 224 accordingly.

Pan
Mute
-10
0
+5
+10
-20
-30
-∞
-5
L / R
Mute
L / R
Mute
L / R
Mute
L / R
-5
-4
-3
-2
-10+1
+2
+3
+4
+5 Pan
-5
-4
-3
-2
-10+1
+2
+3
+4
+5 Pan
-5
-4
-3
-2
-10+1
+2
+3
+4
+5 Pan
-5
-4
-3
-2
-10+1
+2
+3
+4
+5 Pan
-5
-4
-3
-2
-10+1
+2
+3
+4
+5 Pan
-5
-4
-3
-2
-10+1
+2
+3
+4
+5 Pan
-5
-4
-3
-2
-10+1
+2
+3
+4
+5 Pan
-5
-4
-3
-2
-10+1
+2
+3
+4
+5
1234
-10
0
+5
+10
-20
-30
-∞
-5
-10
0
+5
+10
-20
-30
-∞
-5
-10
0
+5
+10
-20
-30
-∞
-5
Mute
L / R
5
-10
0
+5
+10
-20
-30
-∞
-5
Mute
L / R
6
-10
0
+5
+10
-20
-30
-∞
-5
Mute
L / R
7
-10
0
+5
+10
-20
-30
-∞
-5
Aux 1
0
2
46
8
10
Aux 2
0
2
46
8
10
Aux 1
0
2
46
8
10
Aux 2
0
2
46
8
10
Aux 1
0
2
46
8
10
Aux 2
0
2
46
8
10
Aux 1
0
2
46
8
10
Aux 2
0
2
46
8
10
Aux 1
0
2
46
8
10
Aux 2
0
2
46
8
10
Aux 1
0
2
46
8
10
Aux 2
0
2
46
8
10
Aux 1
0
2
46
8
10
Aux 2
0
2
46
8
10
Aux 1
0
2
46
8
10
Aux 2
0
2
46
8
10
Mute
L / R
8
-10
0
+5
+10
-20
-30
-∞
-5
Pan
-5
-4
-3
-2
-10+1
+2
+3
+4
+5 Pan
-5
-4
-3
-2
-10+1
+2
+3
+4
+5
Mute
L / R
-10
0
+5
+10
-20
-30
-∞
-5
Aux 1
0
2
46
8
10
Aux 2
0
2
46
8
10
Aux 1
0
2
46
8
10
Aux 2
0
2
46
8
10
Mute
L / R
-10
0
+5
+10
-20
-30
-∞
-5

Output A Output B

Mixer Output to Input

Channel 2

AFS 224

Mixer Output to Input

Channel 1

AFS 224

Output to SpeakerOutput to Speaker

Insert

Returns

To Pow er Amp

Application Guide Operation
AFS 224
8
AFS 224 User Manual