A-BUS SYSTEM OVERVIEW
The product you have just purchased is an integral part of the Russound
A-BUS Multi-Room Audio System. It is a component which, when combined
with other essential components and your source equipment (receiver, CD
player, etc.), creates a versatile whole-house audio system that will fill your
rooms with high-quality sound for years to come.
A-BUS technology is a new, innovative method of providing high quality
audio to remote locations with a single 8-conductor cable such as CAT-5.
A-BUS technology provides many advantages over other conventional
methods of audio distribution such as: simple, single CAT-5 wiring scheme,
infrared control of system components, infrared control of the optional
A-KP amplified keypad module and system power status.
Every A-BUS System is comprised of components from each of the following
three areas.
1.
Volume Controls
: The volume control contains both the amplifier for the
room’s speakers as well as the control for those speakers. One volume
control should be used for each room you choose to control. The
Russound A-KP and A-VC are examples.
2.
Interface Modules
: All components of the A-BUS system must be wired
centrally to an interface module located near your source equipment. It
provides the connection for source equipment, volume controls, infrared
emitters and power supply. The Russound A-CB4 and A-CB4 IR are exam-
ples. The A-CB4 IR is a surface mount unit which offers signal and
infrared interfaces. The A-CB4 is an in-wall Decora© style plate that
offers signal interface which can be coupled with the IRB-5 in-wall
infrared interface.
3.
Power Supply
: The power supply plugs into the interface module. The
Russound A-PS 4-Amp supply is an example.
The A-BUS System is capable of almost infinite expansion. The A-PS, A-CB4
and A-CB4 IR can connect 4 volume controls each. Example: If you wanted
to run 8 controls you would need two A-PS Power Supplies and two A-CB4
(IR) interface modules. NOTE: if you use more than 4 interfaces (16 controls)
you should use a line level amplifier to increase the signal from the source
equipment.
PRODUCT OVERVIEW
The A-CB4 is an in-wall connecting block for use with A-BUS systems. A-
BUS technology is a new, innovative method of providing high quality audio
to remote locations with a single 8-conductor cable such as CAT-5. A-BUS
technology provides many advantages over other conventional methods of
audio distribution such as: simple, single CAT-5 wiring scheme, infrared con-
trol of system components, infrared control of the optional A-KP amplified
keypad module and system power status.
IMPORTANT
– Read the manuals that are included with the A-BUS ampli-
fied modules, IRB-5 IR Connecting Block as well as any other connected sys-
tem components. If you are unsure of any of the following installation pro-
cedures, this product should be installed by a professional custom installer.
KEY FEATURES
1) Connects up to four A-BUS amplified modules such as the A-VC Volume
Control or the A-KP Keypad with IR.
2) Easy to install in-wall design keeps wires inside the wall, where they
belong.
3) Easily connects to Russound IRB-5 In-Wall IR Connecting Block to pro-
vide system status and IR connections.
4) Line audio source input.
5) Line audio buffered output for expansion to another A-CB4 connecting
block.
A-CB4 CONNECTIONS
BEHIND THE WALL CONNECTIONS:
1) Make sure that the A-
PS power adapter is
not connected to the
A-CB4 connecting
Block.
2) Connect a CAT-5 cable
from the A-CB4
Connecting Block to
the A-BUS module
input as shown in
Figure 1. Be sure to
follow the wire color
code as follows: V- = Brown/White, V+ = Brown, ST =Blue/White, IR =
Blue, L+ = Green, L- = Green/White, R- = Orange/White, R+ = Orange. If
the color code above is not followed, you may encounter inconsistent
operation of the A-BUS module. The recommended maximum connection
length for use with standard CAT-5 cable is 100 feet. If the connection
length from the A-CB4 to the A-BUS amplified module is greater than
100 feet, use 22-18 gauges stranded 8-conductor cable such as Russound
Model# MCW-2418 for optimum performance.
3) If you intend to use either the status or IR features of the A-BUS system,
you will need to install a Russound Model# IRB-5 In-Wall IR Connecting
Block along with the A-CB4. The A-CB4 has a four-pole connector for
connection to the IRB-5 connecting block. Make connection to the IRB-5
as shown in Figure 2.
4) See the IRB-5
instruction manual
for connection of
system status and
IR emitters.
FRONT PLATE CONNECTIONS:
1) A line-level audio source can be connected to the audio input jacks on
the front of the A-CB4 This audio source will be pre-amplified by the A-
CB4 and sent to each A-BUS amplified module. Audio source connection
is shown in Figure 3.
2) The A-CB4 also has buffered audio outputs. These can be used to connect
to an additional A-CB4 or to an additional amplifier or processor.
3) Once all other connections have been made, connect the A-PS A-BUS
System Power Supply to the power input jack on the
front of the A-CB4 as shown in Figure 4.
V- V+ ST
IR L+ L-
R- R+
CAT-5
ORANGE
BLUE
BRO
WN
GREEN
Connector on
Russound A-CB4
or A-CB4 IR
Connector on
Russound A-KP
V- V+ ST IR L+ L- R- R+
Figure 1
CONFIRM
IRB-5
A-CB4
+V
GND
ST
SIG
POWER
GND
STATUS
SIGNAL
16 AWG
4 Conductor Cable
Figure 2
A
UDIO
I
N
L
R
A
UDIO
O
UT
P
OWER
+24V
4A
SIGNAL INTERFACE
L
R
Figure 3
A
UDIO
I
N
L
R
A
UDIO
O
UT
P
OWER
+24V
4A
SIGNAL INTERFACE
L
R
Figure 4
