Model A-MSS
Music Source Selector Hub
for A-BUS
®
System
Instruction Manual
INSTRUCTIONS FOR CONNECTING AND USING RUSSOUND
®
MODEL A-MSS. REFER TO THE DIAGRAMS INSIDE.
A-MSS OVERVIEW
The A-MSS is an A-BUS hub that provides four pairs of stereo RCA
inputs to allow up to four audio source components to be distributed
throughout the house. The A-MSS will allow you to select any of the
audio sources (when used with Russound’s A-KP2 keypad in multi-
source mode) and listen to it in any room where you have an A-BUS
keypad installed. In addition, the A-MSS has a built-in infrared
A-MSS KEY FEATURES
• Four stereo audio source inputs with loop outputs for sharing
audio with another system (e.g., stereo receiver)
• Compatible with other A-BUS products
• Four common IR outputs with confirmation LED
• 12VDC trigger output
Mount the A-MSS using screws or hook and loop fastener. Securely
mount the A-MSS within 3 feet of the source equipment.
28-1149
MOUNTING
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 play-
er, 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 methods of audio dis-
tribution, including: simple, single CAT-5 wiring scheme; infrared control of sys-
tem components; infrared control of the optional A-KP2 amplified keypad
module; and system power status.
Every A-BUS System is comprised of components from each of the following
three areas.
1. A-BUS Amplified Modules: The Module contains both the amplifier for the
room’s speakers as well as the control for those speakers. One Module
should be used for each room you choose to control. The Russound A-KP2
Amplified Keypad (with built-in IR receiver) is an example of an A-BUS
Amplified Module.
2. A-BUS Hubs: All components of the A-BUS system must be wired centrally
to a Hub located near your source equipment. The Hub provides the con-
nection for source equipment, volume controls, infrared emitters and power
supply. The A-H4, A-H4P, and A-H2 are examples of A-BUS Hubs.
3. Power Supply: The power supply plugs into the Hub. The Russound
®
A-PS
24VDC/2.5A unit is an example.
A-MSS SPECIFICATIONS
12VDC Trigger Output: 100mA max
Source Inputs: 8 X 600 ohms line level audio (RCA)
Source Outputs: 8 X 600 ohms line level audio (RCA)
A-BUS Output: A-BUS ready RJ-45 termination, CAT-5
T568A standard
Dimensions: 8.25"W x 1.25"H x 3.75"D
(20.9 x 3.2 x 9.5 cm)
Weight: 1.08 lbs. (0.49 kg)
5 Forbes Rd. Newmarket, NH 03857, USA
☎ 603.659.5170 • Fax 603.659.5388
e-mail: tech@russound.com
Come visit us at:
Note: When making all connections, be sure that the power supply
is not connected.
Source Audio Inputs
Connect a set of RCA patch cables to the line-level output on the
back of the source component. Connect the other end of the RCA
cables to the A-MSS source audio input, keeping channel identity
consistent. Connect up to four stereo line-level audio sources to
the A-MSS in the same manner.
Source Audio Outputs
The A-MSS source input and source output connections are one-
to-one passthroughs. The source connected to source input 1 will
be the same source that outputs through source output 1 and
so on.
Connect a set of RCA patch cables for each source from the A-MSS
source audio output to the receiver’s line-level audio input, keeping
channel identity consistent.
Note: The receiver must have at least four line-level stereo audio
inputs to send all four sources for independent use by another
system.
IR Emitter
s
Connect an IR emitter (such as the 845.1) for each source to each
of the corresponding IR emitter output jacks on the A-MSS. Adhere
the other end of the emitter over the IR receiver on the front of
the source component. The IR signal that is received through a
zone’s A-KP2 is routed through the A-BUS hub to the A-MSS com-
mon IR outputs. This allows remote operation of the sources con-
nected to the A-MSS source audio inputs.
A-BUS Output
The A-MSS must be connected to either the “input” connector on
an A-H4P A-BUS hub or to the “Link In” connector on an A-H4 or
A-H2 A-BUS hub. The A-MSS cannot be used with an A-H4D
because the A-H4D does not have a Link In connector. Use CAT-5
cable with RJ-45 terminations using the T568A standard. Connect
one end of the terminated CAT-5 to the A-BUS output on the A-
MSS. Connect the other end of the CAT-5 to the expansion In or
Link In port of the A-BUS hub.
For the completion of the A-BUS system, the A-KP2 keypads are
connected to the A-BUS hub and speakers for each zone are
connected to the A-KP2. CAT-5 is used for all connections with
T568A RJ-45 terminations and 110 punchdown terminations for
the keypads.
A-MSS CONNECTIONS
A-BUS
®
is a registered trademark of LeisureTech Electronics Pty Ltd Australia
LIMITED WARRANTY
The Russound A-MSS is fully guaranteed for two (2) years from the date of pur-
chase against all defects in materials and workmanship. For this warranty to
apply, the unit must be installed and used according to its written instructions.
During this period, Russound will replace any defective parts and correct any
defect in workmanship without charge for either parts or labor. Accidental dam-
age and shipping damage are not considered defects under the terms of this
warranty. Russound assumes no responsibility for defects resulting from abuse or
servicing performed by an agency or person not specifically authorized in writ-
ing by Russound. If service is necessary, it must be performed by Russound.
Damage to or destruction of components due to excessive power voids the war-
ranty. In these cases, the repair will be made at the owner’s expense. To return
for repairs, the unit must be shipped to Russound at the owner’s expense, along
with a note explaining the nature of the service required. Be sure to pack in a
corrugated container with at least 3 inches of resilient material to protect the
unit from damage in transit.
Before returning a unit for repair, call Russound at (603) 659-5170 for a Return
Authorization number. Write the RA number on the shipping label and ship to:
Russound, ATTN: Service, 5 Forbes Road, Newmarket NH 03857
Russound sells product only through authorized Dealers and Distributors to
ensure that customers obtain proper support and service. Any Russound product
purchased from an unauthorized dealer or other source, including retailers, mail
order sellers and online sellers will not be honored or serviced under existing
Russound warranty policy. Any sale of products by an unauthorized source or
other manner not authorized by Russound shall void the warranty on the appli-
cable product.
Signalling Connector
The 3-pin connector provides both the 12VDC output trigger signal
and a local control IR input signal. Use the “12VDC Trigger output”
and “GND” pins to provide a 12VDC trigger out signal when you need
to activate accessories such as the ACT-1 outlet. The output will be
present when the A-BUS system is active. Use the “Sig” and “GND”
pins when you need to connect a local IR receiver (such as SaphIR
Eye) to repeat local IR signals to local IR emitters. The IR signal on this
input will be combined with the IR signals sent to the A-MSS over the
A-BUS link connection and will appear on the “IR Emitters” jacks.
Indicators
12VDC TRIGGER - The Trigger LED will be illuminated when 12VDC is
present at the 12VDC trigger out.
SYSTEM POWER - The Power LED will be illuminated when the 24VDC
power supply attached to the powered A-BUS hub is powered.
IR - The red LED will flash when IR signals are received by the A-BUS
keypad. This is used to confirm IR reception to the A-MSS.
repeating control system. When used with an A-KP2 keypad it
allows you to not only choose which audio source to listen to, but
also control features such as play, stop, and fast forward. If you
want to share your audio sources with the main audio system or
home theater, the A-MSS has four stereo pairs of RCA outputs for
easy integration and use.