Altronics A 4115 Operating Instructions - Page 2

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REDBACK A 4115 15W Stereo Amplifier
O
VERVIEW
The Redback A 4115 stereo amplifier is super compact
and ideally suited to smaller PA system installations.
Designed around the National TDA1519 IC it offers
virtual "destruction proof" operation even under sever
misuse such as over voltage, over temperature, over load
and short circuit speaker line conditions. The amplifier is
extremely stable even when microphone and speaker
cables are run together over long distance. The unit will
automatically shut down when overloaded and will
restore to normal operation when the fault condition is
removed.
The A 4115 can be used as a stand alone/ bench mount
amplifier or can be rack mounted when used in
conjunction with optional hardware. The amplifier can
be operated from either 12-14V DC or 240V AC . This
versatility makes it ideal for mobile applications such as
tour buses, boats etc.
F
EATURES
• 15W RMS Output
• 1 balanced XLR and unbalanced jack mic input
• 1 Music input (3.5mm)
• 1 Auxiliary input
• 4-16Ω output
• 240VAC / 12-14VDC operation
• Headphone Socket
Made in Australia by
240V AC (2A M205 Fuse)
Altronic Distributors Pty Ltd
1
2
Fig. 1: Rear panel layout.
MIC
Mi c
Music
4
Input
Input
2
0
1
2
3
Fig. 2: Front panel layout.
Page 2
1 Snap in AC Fuse
2 IEC Mains Socket
3 DC Fuse
AUX
BASS
6
4
6
4
6
8
2
8
2
8
10
0
10
-
+
4
5
1
6.35mm Mic Input
2
3.5mm Input
3
Microphone Level
T
ROUBLE
NO POWER
(Power LED light does not illuminate) Check mains fuse. Only
replace with M205, 240V AC 2A rated fuse.
DISTORTED OUTPUT
Check that the speaker type is correct for the output that you
are using. Check for any short circuits on the speaker line.
VERY LOW OUTPUT
Make sure that the input is the correct level (check for shorted
connectors). Check for any short circuits on the speaker line.
CONTINUALLY BLOWS FUSES
Make sure that the speaker line is not shorted. Check also
speaker types, ratings and if on correct output.
AMPLIFIER KEEPS ON CUTTING IN & OUT
Check speaker types, ratings and for any short circuits on the
speaker line.
SPKR
12V DC
DC
RIGHT
IN
Fuse
(M205 5A)
+ - + - + -
3
4 5
Legend
4 12V DC Input +/-
5 Right Speaker +/-
6 Left Speaker +/-
TREBLE
BALANCE
On
6
6
4
4
2
2
8
8
-
+
-
+
6
7
8
4
Auxiliary Level
5
Bass
6
Treble
S
HOOTING
SPKR
L
LEFT
R
Aux Input
6
7
7 Headphone Output (3.5mm)
8 Auxiliary Input (RCA)
9 Microphone Input (XLR)
Legend
7
Balance
8
Power LED
9
Power Switch
2
1
3
Mic Input
8
9
Power
9