Redback A 5110 DI Box User manual

REDBACK® www.altronics.com.au
®
Manufactured in Australia by Altronic Distributors Pty Ltd
REDBACK®
Page 4
A 5110 DI Box
OPERATING INSTRUCTIONS
OVERVIEW
Direct Injection (DI) boxes are used to convert high impedance unbalanced devices like guitar pick ups to
a low level balanced output. This is done to allow signals to be fed over long distances without hum and
noise pick up. This model can be powered from either an external 12V DC source, a 9V battery, or
powered directly by the equipment it is connected to ie: Phantom powered. This DI box has inbuilt EQ or
tone controls plus an overall level control. Two 6.35mm mono connectors are provided for the input and
“loop out”, while a single 3 pin XLR is used for the output. An earth lift switch is provided to help
eliminate earth loops. A test switch is provided to test battery or phantom power availability. A “loop in,
loop out” power supply has been provided for powering other Redback Solutions products without the
need for individual 12VDC supplies for each unit.
SPECIFICATIONS
Power: ..........................................................................9-28v DC.
Power Source: ..................Internal 9v battery (not supplied)
External 12v, or 24v, dc plugpack (not supplied)
Operating current: ............................................................10ma
Nominal Input Level:..................................-10dbm (245 mv)
Input Impedance presented: ......................300k unbalanced
Output Load required: ......................200~600 ohm balanced
Frequency Response:..........................20 Hz to 20Khz (±1db)
Gain:....................................................................................Unity
Noise:..........................................................................> -60 dbm.
*Specifications subject to change without notice
Doc. BL1453Doc. BL1453
FEATURES
• 6.35mm mono in out loop
• Treble, bass and mid volume
• Balanced 3 pin XLR out
• 12-24VDC or 9V battery operated
• Slide switch to select 9V battery power
• Switch for 9V battery or phantom power check
• Ground isolation switch
Distributed by Altronic Distributors Pty. Ltd. Perth. Western Australia.
Phone: [phone] Fax: [phone]
Internet: www.altronics.com.au

REDBACK® REDBACK®
Page 3Page 2
MONO/STEREO
LIFT/GROUND
"BATTERY ON"
Battery/Phantom power availability test button.
VCC
VCC
VCC
C24 100n
C23 100/25
R9 10
C15 10/35
LED3
R29 2k2
SW5
LED2 LED1
R16 3k3
R15 3k3
C13 10/35
C12 100/35
SW4
D4 5819
D3 5819 C11 100n
C10 100n
1
2
3
U2 7812
R14 100k R13
100k
D2 5819 B1 9v
1
2
2 2PIN
C14 100
Q1 TIP31C
R12 1k ZD2 15v
R2 10k
S2 S1
D1 5819
P2 P1
C2 10/BP
RV1 1M/log
C3
10pf
C4 100n 2
31
U1A
TL062
6 57
U1B
TL062
R3 560
R4 4k7 R5
4k7
R6 560
R7 1k R8 1k
1 2 3
31 3PIN
R10 470k
R11 2k2
C5 10/BP C6 10/BP
C7 100/25
C8 1n
C9 .47
SW3
R17 18k R18
18k
R19 12k R20
12k
R21 10k R22
10k
R23 1k
RV2
100k/lin
RV3 100k/lin RV4 100k/lin
C16 10/bp
C17 15n
C18 2n7
C19 12n C20 1n5
C21 47p
R24 27k
R25 47k R26 47k
2 31
U3A
TL072
6 57
U3B
TL072
R27 470k
R28 470k
C22 22p
+ H 0630
DC. LOOPING DC. IN LOOP OUT SIGNAL IN
(link)
FRONT PANEL SWITCH 2 PIN DINKLE TO
+ H0660
Doc. BL1453Doc. BL1453
REDBACK
A5110
D.I. Box
On
Power
Level
6
8
2
010
46
8
2
010
4
6
8
2
010
4
6
8
2
010
4
Bass Mid Treble
Phantom
Power Battery
Fig. 1: Front panel layout.
1 2 3 4 5 6
1Phantom Power LED
2Battery Check LED
3Master Level Control
4Bass Level Control
5Mid Level Control
6Treble Level Control
7Power LED
8Power Switch
Legend
7 8
12-24
VDC
Input
12-24
VDC
Output
-+-+
2
3
1
Output
Lift
Ground
Loop
Out Signal
In Batt./
Phantom
power
Test
Batt.
On
Off
Made in Australia by
Altronic Distributors Pty Ltd
Fig. 2: Rear panel layout.
1 2 3 4 5 6
112-24VDC Input
212-24VDC Output
3Ground Isolation Switch
4XLR output
56.35mm Loop Out
66.35mm Signal In
7Battery Selector Switch
8Battery/Phantom PowerTest
Switch
Legend
7 8