Important Safety and Installation Information
dimmer-controlled lighting, bright sunlight, and reflective surfaces
such as mirrors or blank walls. You maywish to temporarily
place the component to be controlled using the sensor in the
proposed location in order to test the integrityofIRsignals.
¡Input Cable Connection Block – Using standard IDT
punch-down tools, connect the Category5/5e cable linking the
AB1 to the receiver to this connection block in accordance with
the color code printed on the circuit board.
Thank you for Choosing Harman Kardon. With your pur-
chase ofa newAB1 Amplified In-WallModule you willbe able
to extend the flexibilityofyour home entertainment systemso
that it delivers sound to another roomin your home. Custom-
Low-voltage wiring systems must be properlyinstalled to mini-
mize the possibilityofaccidentalcontact with hazardous power
and lighting wiring. Never place remote controlwiring near bare
power wires or lightning rods, antennas, transformers, steamor
hot water pipes, or heating ducts. Never run lowvoltage wire in
anyconduit, box, channel, duct or other enclosure containing
power or lighting circuits ofanytype. In addition to ensuring
proper separation between anyACpower wiring and the
When determining the specific location for anAB1, keep in
mind that it should be in a convenient place where it maybe
operated manually, or that, when it is used with a remote con-
trol, the mounting position enables the built-in IRsensor to “see”
commands fromanyplace in the room. In practice, the AB1
maybe mounted close to other wallswitches, but remember
that the AB1 should NEVERbe installed in the same gang box
as anyswitch or product, such as a light switch or dimmer,
where ACline voltage is present.
™Output Level Trims – These trimpots are used to match
the output levelofthe AB1 module to the specific speakers
designed for use exclusivelywith Harman Kardon A-BUS/
Ready receivers, the AB1 enables you to send a separate
source to the remote roomand power most speakers without
the need for an additionalamplifier through one single
Category5/5e cable. Thanks to a built-in IRsensor, you
mayalso controlsource selection, operate compatible
HarmanKardon source components and turn the systemon
and offusing the Zone IIremote packaged with your receiver.
£Speaker Terminal Block – The wire used to connect the
AB1 to your speakers is connected to this terminalblock. Insert
the wire in accordance with the color coding shown and then
tighten the screw. Note that the maximumwire size is 14 AWG.
Category5/5e cable used forA-BUS, it is important to avoid
running the A-BUS cable in parallelto anyACwiring. Always
maintain at least the minimumseparation betweenACwiring
and the A-BUS cable orANYlow-voltage cable that is required
bythe NECor anyapplicable localbuilding codes or regulations.
Installation and Connection
When planning the installation, it is also wise to consider the
distance fromthe AB1 module to the speakers, particularly
when theyare in-wallor ceiling mounted. Be certain that there
are no solid walls or load-bearing structures that would prevent
the speaker wires fromreaching their location.
In order to fullyenjoythe benefits ofremote keypad control,
please take a fewminutes to read this owner’s manual. It
contains important information that willguide you through the
correct and safe installation ofyourAmplified In-WallModule.
Ifyou do not have experience installing in-wallelectricaland
telecommunications components, you are advised to consult
with a qualified low-voltage contractor or custominstaller.
Make sure to followallinstructions when preparing wiring for
use with the AB1 module. Failure to do so mayresult in a
potentialsafetyhazard, including possible danger to persons
• Before beginning the installation process, make certain
that all electronic products in the system are turned off
and disconnected from their A/Vpower connection.
This avoids the possibility of accidental activation,
which could possibly damage the equipment or cause
personal injury. Do not turn on the equipment until
instructed to do so.
• Be certain to observe all appropriate safety measures
when installing any wiring, including, but not limited to,
the use of eye protection when required, and attention
to the required distances between low-voltage wiring
and high-voltage ACmains wiring.
Ifyou willbe running the cable through a ventilation plenum,
remember to use plenum-rated cable to complywith NECand
other safetyrequirements. Failure to do so mayresult in a
potentialfire or safetyhazard.
The wiring used to connect the AB1 to the A-BUS/Ready
receiver maybe Category5, 5e (or better) wiring. Be certain
that anysafetyrequirements mandating the use ofplenum
wiring are taken into account. The speaker wiring should also be
in-wallrated as required, and maynot exceed 14 AWG. To sim-
plifywiring you maywish to use two-pair CL-3 rated in-wall
wiring and run a single cable fromthe AB1 to both locations.
One pair willbe used to connect the first speaker and the other
willcontinue to the second speaker.
Screw Holes – After you have completed installation, these
screwholes accept the screws supplied with your Decora-style
wallplate to attach it to the AB1.
Ifyou have anyquestions about this product, its installation or its
operation, please contact your retailer or custominstaller. They
are your best source ofproduct information.
Screw Slots – Use the supplied machine screws to attach
Always observe the appropriate safetycodes for concealed
wiring. Be extremelycarefulnot to cut through or drillinto con-
cealed wiring or pipes. Make a smallinspection opening before
cutting or drilling.
the AB1 to an electricaljunction boxor plaster ring through
3Volume ⁄/¤Buttons – Pressing these buttons
raises or lowers the volume levelofthe speakers connected
to the AB1.
Designed for simple installation bya custominstaller or
advanced do-it-yourselfhobbyist, the AB1 willadd to your lis-
tening pleasure bydistributing sound beyond the confines of
your main listening roomwith the levelofperformance and
product design elegance Harman Kardon has been known for
throughout its fifty-year history.
Dust or dirt can cause specialproblems on wiring contacts.
Be sure allcontacts are clean, and that allparts are installed
correctlyto protect themfromdust and dirt.
Step One: Run a Category 5/5e cable from the receiver
location to the module.
4IRSensor – This sensor receives signals froma remote
control, such as the Zone IIremote supplied with Harman Kardon
multichannel-capable receivers, and passes themon to the
receiver or other compatible source components.
Run a splice-free Category5/5e cable fromthe location where
the AB1 module willbe installed to the location where the
A-BUS/Readyreceiver is placed. At each end, make certain to
leave sufficient wire for ease ofinstallation. Anyextra wire may
be trimmed back during the installation. Remember that you will
need to have access to the rear ofthe AB1 after the module is
connected, but before the module is secured into the wallbox.
The AB1 is compatible with most modern in-wallor ceiling
speakers, provided that theyhave an efficiencyrated at 88dB
or greater. Minimumspeaker impedance is sixohms.
Your newHarman KardonAB1 Amplified In-WallModule
has been custom-designed for use with Harman Kardon’s
A-BUS/Readyproducts and it is also compatible with other
A-BUS-compatible systems. Do not connect it to any
Simple connection to anyA-BUS/ReadyHarman Kardon
It is possible to run two pairs ofspeakers fromone AB1,
but we do not recommend that due to the degradation in
5Status LED–The LEDbehind the red windowwilllight
when the AB1 is connected to anA-BUS/Readyreceiver
that is turned on. It is nowreadyto accept controlcommands,
as long as the AVR’s Multiroomsystemis activated. It will
flash when a command is received froma compatible
Touch button controlfor volume up/down
Built-in IRsensor for controlofcompatible Harman Kardon
The AB1 is onlyto be installed byqualified personneland as
per the requirements ofallapplicable state and localbuilding
codes, as wellas NEC(NationalElectricalCode) requirements.
Check with your localauthorities as needed to ensure that
allwiring inside walls is installed in compliance with the
proper standards. Failure to do so maypresent a potential
Step Two: Prepare and install an RJ-45 plug at the
receiver end of the system.
What Is Included
YourAB1 in-wallmodule includes two mounting screws: self-
starting, universal-head machine screws.
Decora -style wall-plate blends perfectlywith other in-wall
The connection and cable termination at the receiver end ofthe
installation is a standard RJ-45 connector using the TIAT568A
Mounts in most standard electricaljunction boxes or
You are responsible for providing a Decora-style wall-plate,
available in a varietyofcolors and finishes at your localhard-
Uses standard Category5/5e cable and RJ-45 connections
Connect an RJ-45 plug to the end ofthe wire as follows.
Looking at the connector with its clip down and the wires
coming out ofthe connector toward you, numbered fromleft
to right, the typicalpincolors are as follows:
Ifyou have anydoubt about your abilityto work with electrical
and telecommunications wiring, you are advised to hire a
professionallicensed electrician or custominstaller to install
You are also responsible for providing the speakers and a
sufficient length ofCategory5/5e (or better) UTP (unshielded
twisted pair) cable and an RJ-45 modular plug. The wiring
scheme is the standard TIAT568Aconfiguration. The maximum
length should not exceed 150 feet in order to avoid degrading
the signal. Further information on the correct wiring configuration
is provided in these instructions.
In order to help you use this guide with the front-panelcontrols
and rear-panelconnections, the following typographicalconven-
tions have been used:
Striped Wire Pairs
White with Green Stripe
Solid Wire Colors
Example – Indicates a specific front-panelbutton or rear-panel
The AB1 maybe installed in anylocation appropriate for stan-
dard in-wallelectricalcomponents. You are responsible for
selecting and properlyinstalling an appropriate electricaljunction
boxor plaster ring. Be sure to check the fit ofthe boxor ring
with the AB1 before installation into the wall.
White with Orange Stripe White
– Indicates a specific front-panelcontrolor indicator
– Indicates a rear-panelconnection
BR BR BL BL GR GR OR OR
WH WH WH WH
White with Blue Stripe
Since the AB1 uses a built-in infrared sensor to relaycom-
mands to the A/Vreceiver, be sure to avoid installing the AB1
in an area subject to potentialinterference with the IRsignal.
Possible sources ofinterference include plasma video displays,
White with Brown Stripe White