IntroductionAdditional Installation Information
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Thank you for choosing Harman Kardon! The ABH 4 Expansion Hub thatCommon wire-splicing techniques may cause the wire to break, resulting
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you have purchased will enable you to extend the capabilities of an A-BUS-in poor circuit integrity. This can cause interference and result in poor system
based multiroom system to four or more rooms, with a Harman Kardon performance.
A-BUS/READY receiver as the control point. In applications in which you wish to
Dust or dirt can cause special problems on wiring contacts. Be sure all contacts
add A-BUS connectivity to a receiver, preamplifier or surround processor that is
are clean and that all parts are installed correctly to protect them from dust
not A-BUS/READY, a few simple connections to a multiroom or tape output will
and dirt.
enable you to add the power and simplicity of A-BUS to your home.
Your new Harman Kardon ABH 4 A-BUS Expansion Hub has been custom-
We strongly recommend that you carefully read this instruction sheet before
designed for use with A-BUS products. Do not connect the RJ-45 jacks to
installing your new ABH 4. It contains important information that will guide you
any other device.
step by step through the correct and safe installation of the unit. If you do not
Make sure to follow all instructions when preparing wiring for use with the ABH 4
have experience installing in-wall electrical and telecommunications components,
Expansion Hub and associated equipment. Failure to do so may result in a
you are advised to consult with a qualified low-voltage contractor or custom
potential safety hazard, including possible danger to persons and/or equipment.
installer.
If you will be running RJ-45 cable through a ventilation plenum, remember to
If you have any questions about this product, its installation or its operation,
use plenum-rated cable to comply with NEC and other safety requirements.
please contact your retailer or custom installer. He or she is your best source of
Failure to do so may result in a potential fire or safety hazard.
product information.
If you have any doubt about your ability to work with electrical and telecommuni-
Designed for simple installation by a custom installer or advanced do-it-yourself
cations wiring, you are advised to hire a professional licensed electrician or
hobbyist, the ABH 4 will add to your listening pleasure by distributing sound
custom installer to install this product.
throughout your home with the level of performance and product design
elegance for which Harman Kardon has been famous for more than fifty years.Installation Planning
FeaturesWhen installed, the ABH 4 may be placed flat on a shelf or mounted to a wire
back-board using standard wood screws and the keyhole notches on the outer
Y Simple connection to any A-BUS/READY Harman Kardon receiver
edge of the ABH 4. The unitOs power supply must be placed on a shelf and
Y Easy interface with existing audio/video receivers, preamplifiers or processors
should not be attached to a back-board. When planning an installation, remem-
to add A-BUS capability for multiroom systems with only a single Category 5
ber to allow sufficient clearance for all wires and connectors that will be attached
cable run to each remote module
to the ABH 4 so that severe angle bends of connecting cables are avoided.
Y Designed for easy mounting on wire back-boards, or for shelf placement
The wiring used to connect the ABH 4 to the A-BUS/READY receiver and A-BUS
modules in remote rooms may be Category 5 or 5e wiring. Be certain that any
IMPORTANT SAFETY AND INSTALLATION INFORMATION!
specific safety rating requirements for riser or plenum wiring are taken into
Wire Separations
account, if needed. The speaker wiring should also be in-wall-rated as required,
Remote control wiring systems must be installed to minimize the possibility ofand may not exceed 14 AWG. To simplify wiring, you may wish to use two pairs
accidental contact with hazardous power and lighting wiring. Never place remote4x14ABH 4 to
control wiring near bare power wires or lightning rods, antennas, transformers,both locations. One pair will be used to connect the first speaker and the other
steam or hot water pipes, or heating ducts. Never place remote control wire inwill continue to the second speaker.
any conduit, box, channel, duct or other enclosure containing power or lighting
What Is Included
circuits of any type. Always provide adequate separation of remote control wiring
and other electrical wiring according to code. When in doubt about separationYour ABH 4 should be packed with the following items. If any of the below are
distances, the ORule of Sixes� can be used. This rule requires 6 feet of separationmissing, please contact Harman Kardon customer service.
between remote control wiring and open high-voltage wiring, lightning grounding
Y ABH 4 Expansion HubY Power Supply
wire or grounding rods. It requires 6 inches of separation from all other high-
Y AC Power CordY RJ-45 Connection Jumper Cable
voltage wiring, unless in conduit.
Cutting and Drilling
Always observe trade safety rules for concealed wiring. Be extremely careful not
to cut through or drill into concealed wiring or pipes. Make a small inspection
opening before cutting or drilling.
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