Harman Kardon Home Theater System AB 2 User Manual

Always observe the appropriate safety codes 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.  
What Is Included  
Two self-starting, universal-head machine screws for mounting  
Press and hold this button to select The Bridge/DMP as the  
multiroom source. If a compatible iPod (not included) is docked in  
The Bridge, it will begin playing. The Bridge is a Harman Kardon  
accessory that is sold separately. It may be connected to a  
The Bridge-Ready Harman Kardon product.  
Input-Cable Connection Block – Using standard IDC punch-  
down tools, connect the Category 5/5e cable linking the AB 2  
to the receiver or hub to this connection block in accordance  
with the color code printed on the circuit board.  
Introduction  
Thank you for choosing this Harman Kardon® product.  
With your purchase of a new AB 2 Amplified In-Wall Module  
you will be able to extend the flexibility of your home enter-  
tainment system so that it delivers sound to another room  
in your home. Custom-designed for use exclusively with  
Remote control  
You are responsible for providing a Decora-style wall-plate,  
available in a variety of colors at your local hardware retailer.  
Dust or dirt can cause special problems on wiring contacts.  
Be sure all contacts are clean, and that all parts are installed  
correctly to protect them from dust and dirt.  
Output-Level Trims – Use these trim pots prior to final instal-  
lation to match the output level of the AB 2 to your speakers.  
CD Source Control – When the AB 2 is used with a Harman  
Kardon ABH 4000 or other compatible multizone A-BUS hub,  
and when a CD player is connected to Source 2 of the hub,  
tap this button to select the CD player as the source and begin  
play (if the player was not already playing). Tap the button again  
to pause play. If audio is not heard within a few moments of  
the first tap, tap the button again, as the CD player may have  
already been playing and would have interpreted the command  
as a Pause.  
®
Harman Kardon A-BUS -equipped products and ABH series  
You must also provide the speakers and a sufficient length of  
Category 5/5e (or better) UTP (unshielded twisted pair) cable  
and an RJ-45 modular plug. The wiring scheme is the standard  
TIA T568A configuration. The maximum length should not  
exceed 100 feet to avoid degrading the signal. Further informa-  
tion on the correct wiring configuration is provided in Step Two.  
Speaker-Terminal Block – The wire used to connect the  
AB 2 to your speakers is connected to this terminal block.  
Insert the wire in accordance with the color coding shown and  
then tighten the screw. The maximum wire size is 14 AWG.  
hubs, the AB 2 enables you to send a separate source to the  
remote room and power most speakers – without the need for  
an additional amplifier – through one single Category 5/5e cable.  
The keypad and built-in IR sensor, compatible with the included  
remote and Harman Kardon AVR and second-zone remotes,  
offer control over source selection and operation, local volume  
and system power.  
Your Harman Kardon AB 2 Amplified In-Wall Module has been  
custom-designed for use with Harman Kardon A-BUS-equipped  
products; it is also compatible with many other A-BUS-compatible  
systems. Do not connect it to any other device.  
Installation and Connection  
IMPORTANT SAFETY NOTES:  
The AB 2 is only to be installed by qualified personnel and as  
per the requirements of all applicable state and local building  
codes, as well as NEC requirements. Check with your local  
authorities as needed to ensure that all wiring inside walls is  
installed in compliance with the proper standards. Failure to  
do so may present a potential safety hazard.  
Front-Panel Controls  
Before beginning the installation process, make certain  
that all electronic products in the system are turned off  
and disconnected from their A/V power 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.  
If this button was previously tapped to start play, press and  
hold the button to skip to the next disc (assuming the player is  
a multidisc unit).  
Wall-Plate Screw Hole  
Mounting Screw Slot  
To fully enjoy the benefits of remote keypad control, please take  
a few minutes to read this owner’s manual. It contains important  
information that will guide you through the correct and safe  
installation of your Amplified In-Wall Module. If you do not have  
experience installing in-wall electrical and telecommunications  
components, consult a qualified low-voltage contractor or  
custom installer.  
DVD Source Control – When the AB 2 is used with a Harman  
Kardon ABH 4000 or other compatible multizone A-BUS hub,  
and when a DVD player is connected to Source 3 of the hub, tap  
this button to select the DVD player as the source and begin play.  
AVR Tuner/DMP Control  
CD Source Control  
Power Off/Mute  
Skip Up/Down  
If you have any doubt about your ability to work with electrical  
and telecommunications wiring, you are advised to hire a  
licensed electrician or custom installer to install this product.  
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 AC mains wiring.  
DVD Source Control  
If you have any questions about this product, its installation or  
its operation, please contact your retailer or custom installer.  
They are your best source of product information.  
If this button was previously tapped to select the DVD player as  
the source, press and hold the button to begin play.  
Volume Up/Down  
Installation Planning  
MP3 Source Control  
The AB 2 may be installed in any location appropriate for  
standard in-wall electrical components. You are responsible for  
selecting and properly installing an appropriate electrical junction  
box or plaster ring. Check the fit of the box or ring with the  
AB 2 before installation.  
IR Sensor  
Status LED  
MP3 Source Control – When the AB 2 is used with a Harman  
Kardon ABH 4000 or other compatible multizone A-BUS hub,  
and when an MP3 player is connected to Source 4 of the hub,  
tap or press and hold this button to select the MP3 player as  
the source.  
Features  
Step One: Run a Category 5/5e cable from the receiver  
or hub location to the module.  
Mounting Screw Slot  
Wall-Plate Screw Hole  
Simple connection to any A-BUS-equipped Harman Kardon  
product or ABH series hub  
Run a splice-free Category 5/5e cable from the location where  
the AB 2 module will be installed to the location where the  
A-BUS-equipped product or hub is placed. Leave sufficient  
wire at each end for ease of installation. Any extra wire may  
be trimmed back during the installation. You will need to have  
access to the rear of the AB 2 after the module is connected,  
but before the module is secured into the wall box.  
Since the AB 2 uses a built-in infrared sensor to receive commands,  
avoid installing it near potential sources of interference, including  
plasma video displays, dimmer-controlled lighting, bright sunlight,  
and reflective surfaces such as mirrors or blank walls. Temporarily  
place the AB 2 in the proposed location to test the integrity of  
IR signals.  
8-Key button control for source selection, transport control,  
Wall-Plate Screw Holes – Use these screw holes to attach  
your Decora-style wall plate to the AB 2.  
Power Off/Mute – Tap this button to mute the AB 2. Tap it  
again to resume hearing audio. Muting the AB 2 does not affect  
the source, which will continue playing.  
volume up/down and mute  
Built-in IR sensor for control of compatible sources; remote  
Mounting Screw Slots – Use the supplied machine screws  
to attach the AB 2 to an electrical junction box or plaster ring  
through these slots.  
included  
If the AVRs tuner or The Bridge is the current source, or if the  
AB 2 is connected directly to the AVR, press and hold this  
button to turn off the AVRs multiroom system. If any other  
source has been selected and the AB 2 has been connected  
to a hub, press and hold this button to power off the hub.  
®
Decora -style wall plate (not included) blends perfectly with  
other in-wall electrical controls  
The AB 2 should be installed in a convenient place where it  
may be operated manually, or by using a remote control from  
any place in the room. The AB 2 may be mounted close to  
other wall switches, but it should NEVER be installed in the same  
gang box as any product (e.g., light switch or dimmer) where  
AC line voltage is present.  
⁄ ¤  
Volume  
/
Buttons – Press these buttons to raise or  
Step Two: Prepare and install an RJ-45 plug at the  
receiver end of the system.  
The connection and cable termination at the receiver or hub end  
of the installation is a standard RJ-45 connector using the TIA  
T568A configuration.  
Mounts in standard electrical junction boxes or plaster rings  
lower the volume of the speakers connected to the AB 2.  
Temporarily mute the system by tapping the Power Off button.  
To unmute the system and return to the previous volume level,  
tap the Power Off button again.  
Uses standard Category 5/5e cable  
Skip Up/Down – Tap this button to skip up, and press and  
hold it to skip down. The precise behavior depends on the  
current source:  
Important Safety and Installation Information  
Low-voltage wiring systems must be properly installed to mini-  
mize the possibility of accidental contact with hazardous power  
and lighting wiring. Never place audio or remote control wiring  
near bare power wires or lightning rods, antennas, transformers,  
steam or hot water pipes, or heating ducts. Never run low-voltage  
wire in any conduit, box, channel, duct or other enclosure  
containing power or lighting circuits of any type. In addition to  
ensuring proper separation between any AC power wiring and  
the Category 5/5e cable used for A-BUS, avoid running the  
A-BUS cable in parallel to any AC wiring. Always maintain at  
least the minimum separation between AC wiring and the A-BUS  
cable or ANY low-voltage cable that is required by the NEC  
(National Electrical Code) or any applicable local building codes  
or regulations.  
IR Sensor – This sensor receives signals from the included  
remote control, the main or second-zone remote supplied with  
some Harman Kardon multizone receivers, or a source remote,  
and uses them internally or passes them on to other components.  
When a command is received, the Status LED blinks and the  
AB 2 sounds a tone through the speakers connected to it in  
acknowledgement of the command. The operating range of  
the infrared system is up to 60 feet in ideal lighting conditions,  
and up to 15 feet in bright sunlight.  
Connect an RJ-45 plug to the end of the wire as follows.  
Looking at the connector with its clip on top and the wires  
coming out of the connector toward you, numbered from right  
to left, the typical pin colors are as follows:  
AVR Tuner: Preset up or down; no effect on The Bridge  
CD: Track skip up or down  
Consider the distance from the AB 2 module to the speakers,  
particularly when they are in-wall or in-ceiling mounted. Be certain  
that there are no solid walls or load-bearing structures that  
would prevent the speaker wires from reaching their location.  
DVD: Next or previous chapter  
MP3: No effect  
The cable used to connect the AB 2 to the A-BUS-equipped  
receiver or hub should be Category 5/5e (or better). Be certain  
that any local building or electrical codes mandating the use  
of plenum or riser wiring are taken into account. The speaker  
wiring should be in-wall rated as required, and may not exceed  
14 AWG. To simplify wiring, you may use two-pair CL-3 rated  
in-wall wiring and run a single cable from the AB 2 to both loca-  
tions. One pair will be used to connect the first speaker and the  
other will continue to the second speaker.  
Pin #  
1
Striped Wire Pairs  
Green and White  
Green  
Signal  
Rear-Panel Connections  
Left Channel Ground  
Left Channel  
Right Channel Ground  
IR  
2
Status LED – The LED behind the red window indicates the  
system’s status.  
3
Orange and White  
Blue  
Speaker-Terminal Block  
Output-Level Trims  
4
When the LED is not lit, the AB 2 is not connected to a  
powered A-BUS-equipped component or hub.  
5
Blue and White  
Orange  
Status  
6
Right Channel  
Ground  
Make sure to follow all instructions when preparing wiring for  
use with the AB 2 module. Failure to do so may result in a  
potential safety hazard, including possible danger to persons  
and/or equipment.  
When the LED is at full brightness, the system is operational.  
NOTE: To ensure proper performance, the cable length  
between an A-BUS source component and the AB 2  
should not exceed 100 feet.  
7
Brown and White  
Brown  
The LED will blink when it is receiving an infrared command  
code from a compatible remote control.  
Input-Cable  
Connection Block  
8
+24V DC  
AVR Tuner/DMP Control Tap this button to turn on an  
A-BUS-equipped Harman Kardon A/V receiver’s (AVRs)  
multiroom system and select the tuner as the multiroom  
(remote-zone) source. Each additional tap changes the tuner band.  
Speaker Selection  
Note that one wire in each pair is always a solid color, and the  
other is either white or striped. Make sure that the twisted pairs  
of wires consist of those attached to pins 1 and 2, pins 3 and  
6, pins 4 and 5, and pins 7 and 8.  
If you will be running the cable through a ventilation riser or  
plenum, use plenum-rated cable to comply with NEC and local  
electrical codes. Failure to do so may result in a potential fire  
or safety hazard.  
The AB 2 is compatible with in-wall or in-ceiling speakers that  
have an efficiency rating of 88dB or greater, and a minimum  
speaker impedance of six ohms.  
 

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