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www.redbackaudio.com.au
Redback® Proudly Made In Australia6
Redback® Hearing Loop Ampliers
1.5 REAR PANEL CONNECTIONS
Fig 1.5 shows the layout of the rear panel.
Fig 1.5
1 +24V DC Fuse
This resettable fuse protects the positive supply rail inside the amplier.
2 Output Connections
Connect the loop to these terminals.
3 -24V DC Fuse
This resettable fuse protects the negative supply rail inside the amplier.
4 Phase switch
Not currently available. i.e. inactive.
5 Line Input
A 3 pin balanced Line level input.
6 Mic Input
A 3 pin balanced Microphone level input. Phantom power is also available on this input (see DIP switch settings).
7 EWIS input vox sensitivity
This trimpot adjusts the Vox sensitivity of the EWIS input. Once the VOX is activated the Mic, Line and AUX inputs
will be overridden.
8 DIP Switches
These DIP switches set the phantom power and Vox enable options.
9 Aux Input
The AUX inputs are dual RCA connectors which are internally mixed to produce a mono input signal.
10 EWIS Input
The EWIS inputs are dual RCA connectors which are internally mixed to produce a mono input signal.
Overview
RISK OF ELECTRIC SHOCK
OPEN BY QUALIFIED
PERSONNEL ONLY
!
CAUTION
+
–
240V AC @ 50Hz
Line Mic
OUTPUT
L
R
Aux
Ewis
L
R
Vox
Sens.
+24V DC FUSE -24V DC FUSE
Made in Australia by
Altronic Distributors Pty Ltd
www.altronics.com.au
DIP Switch Options
SW
1
2
On Off
Vox enabled Vox disabled
Phantom Power Off
3 Not Used
4 Phantom Power On
Not Used
1
2
3 4
65
8910 7
DIP
Switches
2 1
3
ON
1 2 3 4
2 1
3
PHASE
SHIFT
(When Internal
module fitted.)