www.redbackaudio.com.au
Redback® Proudly Made In Australia
9
Redback® A 4270/80
Four Zone Paging PA Amplifier
1
2
3
6 7
24VDC In
Volume
Mic
Chime
Volume
1 2 3 4
1
2
PA System Chime On
SW
PA System Chime Off
Internal Chime On
Internal Chime Off
On
Off
DIP Switches 1-2 Settings
ON
1 2 3 4
BGM
Volume
BGM
Input
4
5
2
3
4
DIP Switches 2 - 4
Set the Paging
Off Off Off
Console ID
ID
On Off Off
On On Off
Off On Off
Off Off On
On Off On
On On On
Off On On
7
8
1
2
3
4
5
6
11.0 A 4488 CONNECTIONS
Figure 8 shows the layout of the rear panel.
Fig
8
1
24V DC connector
2.1mm DC jack (centre pin positive). A 24V DC plugpack may be required if the A 4488 is run more than 100m
from the amplifier.
2
RJ45 connector
For connection back to the A 4270 or A 4280. Either port can be used.
3
DIP switch options
These switches set the pre-announcement chime and set the ID number.
4
BGM (Background Music) Input
The background music can be connected via a 3.5mm Stereo Jack.
5
BGM volume
Use this volume to adjust the background music level.
6
Chime volume
Use this volume to adjust the chime level.
7
Microphone volume
Use this volume to adjust the microphone level.
12.0 A 4488 DIP SWITCH SETTINGS
DIP switch 1 sets the pre-announcement chime on or off.
DIP switches 2-4 set the paging console ID number.
NOTE: The ID must be set to either ID1 or ID2 when using the
A 4488 with the A 4270 or A 4280 amplifier.
IMPORTANT NOTE:
Ensure power is switched off when adjusting DIP switches.
New settings will be effective when power is switched back on.
Fig
9
Fig
9
