Tus neeg siv phau ntawv

www.redbackaudio.com.au
Redback® Proudly Made In Australia 7
Redback® Hearing Loop Ampliers
Setup
2.0 SETUP
2.1 SETUP GUIDE
The A 4210 and A 4212 ampliers have a total of four inputs. A balanced 3 Pin female XLR (Mic input), a balanced 3 Pin
female XLR (Line input), a dual RCA (Aux input) and a dual RCA (EWIS input).
The Microphone input has an input sensitivity of 100mV, while the Line, Aux and EWIS inputs have an input sensitivity of
1V. The Line input is suitable for connection from the Line Level output of another amplier.
Phantom power (12V DC) is available at the Mic input, and VOX muting is available on the EWIS input only. (See DIP
switch settings for more info on the phantom power and enabling the VOX muting).
For best performance when using long lines between microphones and the amplier use balanced lines. These reduce
noise or hum that may be induced into the cables. Note that a balanced line uses three wires (two signal wires and one
screened earth wire or shield) where an unbalanced cable uses only one signal wire and a screened earth.
Fig 2.0 illustrates the input connections available.
Fig 2.0
CD
REDBACK
4 -16Ω70V
230V AC @ 50Hz
100V
A 4370
MODEL AC FUSE
5A
A 4380 7.5A
INPUT
24V DC
+
–
RISK OF ELECTRIC SHOCK
OPEN BY QUALIFIED
PERSONNEL ONLY
!
CAUTION
OUTPUTS
+
–
+
–
+
–
+
_
VOLUME
LINE IN
0
2
4
6
8
10
LINE OUT
RESETTABLE
FUSE
Made in Australia by
Altronic Distributors Pty Ltd
www.altronics.com.au
24V DC
OUT
(1A Max)
2 1
3
2 1
3
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
DIP
Switches
2 1
3
ON
1 2 3 4
2 1
3
PHASE
SHIFT
(When Internal
module fitted.)
LOOP RESISTANCE (0.2Ω TO 1.7Ω. MAX 2Ω)