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Redback® A 4427 8 Channel Public Address Mixer
4.0 FRONT PANEL GUIDE
Fig 1 shows the layout of the A 4427 front panel.
Volume 1
Volume 2
4
6
4
6
2
8
2
8
0
10
0
10
Bass
Treble
Vox 1
Bass
Treble
Vox 2
Sens.
Sens.
1
Inputs 1-8 volume controls
Use these controls to adjust the output volume, bass and treble of inputs 1-8.
2
Master Volume
Use this control to adjust the master volume.
3
Signal Presence Indicator
This LED indicates when a signal is present at any of the inputs.
4
MP3 Active Indicator
This LED indicates when an MP3 is playing.
5
On/Fault Indicator
This led indicates when the unit has power if the LED is blue. If the LED is red a fault has occured with the unit.
6
Standby Switch
When the unit is in standby mode this switch will illuminate. Press this button to switch the unit ON. Once the
unit is ON the On indicator will illuminate. Press this switch again to put the unit back in standby mode.
7
LED VU Meter
This LED bargraph provides a visual indication of the output signal.
8
Music input
This input will override input 8 when connected. Use this for connection of portable music players.
9
VOX Sensitivities
These trimpots set the VOX sensitivities of input 1-6.
4
Redback® Proudly Made In Australia
1
Volume 3
Volume 4
Volume 5
4
6
4
6
4
6
2
8
2
8
2
8
0
10
0
10
0
10
Bass
Treble
Vox 3
Bass
Treble
Vox 4
Bass
Treble
Vox 5
Sens.
Sens.
Sens.
9
Volume 6
Volume 7
Volume 8
4
6
4
6
4
6
2
8
2
8
2
8
0
10
0
10
0
10
Bass
Treble
Vox 6
Bass
Treble
Bass
Treble
Sens.
Fig 1
2
3
A 4427
8 Channel Mixer
Master Volume
Music
4
6
Input
2
8
0
10
Signal
-15dB
-12dB
-9dB
-6dB
-3dB
Present
8
7
www.altronics.com.au
4 5 6
On
Fault
0dB
MP3
Power/
Active
Standby
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