Harman Kardon Switch ABH 4000 User Manual

Introduction  
and connectors that will be attached to the ABH 4000 so that severe angle  
bends of connecting cables are avoided.  
be convenient to connect this output to the compatible IR input of an A/V receiver  
without A-BUS.  
questions or doubt about the ability of the wall surface to properly support the  
weight of the ABH 4000, consult a properly trained installer before proceeding.  
Single-Source Hubs  
Thank you for choosing Harman Kardon! The ABH 4000 Expansion Hub  
will enable you to extend the capabilities of an A-BUS®-based multiroom  
system to four zones and up to eight or more rooms, with a Harman Kardon®  
AB 2 amplified module as the control point. A few simple connections to a  
Harman Kardon A-BUS-equipped product, or a source device’s multiroom,  
tape or line-level output, will enable you to add the power and simplicity of  
A-BUS to your home.  
In open-plan areas or adjoining rooms, single-source expansion may be required  
so that a common music source is heard in the area. Connect an RJ-45 jumper  
cable from one of the ABH 4000’s A-BUS Outputs to the Expansion Input of  
an ABH 4 single-source hub. If connected to a Bank B Output, no power supply  
is required for Bank B. Complete the system installation by following Steps Two  
and Three.  
The wiring used to connect the ABH 4000 to the A-BUS-equipped product and  
A-BUS modules in remote rooms may be Category 5 or higher wiring. Consider  
any specific electrical or building code requirements for riser or plenum use. The  
system speaker wiring should also be in-wall-rated as required, and may not  
exceed 2 square millimeters. To simplify wiring, use two pairs of (4 x 14)  
CL-3-rated in-wall wiring and run a single cable from each amplified A-BUS  
module to both locations. One pair will be used to connect the first speaker and  
the other will continue to the second speaker.  
IR Indicator: This LED will flash to confirm that an IR signal is being passed  
through the ABH 4000. This signal may originate from a remote A-BUS module  
in any of the four zones.  
• When the anchor is installed, place a screw through the slot on either side  
of the ABH 4000, and tighten the screw most of the way into the anchor.  
• Slip the ABH 4000 so that it slides down the keyhole notch of the slot, and  
tighten it securely.  
A-BUS Outputs: These jacks are the communications link between the remote  
A-BUS modules and the ABH 4000, carrying audio signals and power to the  
A-BUS modules, and IR or other control commands from the A-BUS modules to  
the ABH 4000 and products connected to it. Connect a Category 5 cable from  
each remote A-BUS module to these outputs using standard RJ-45 connectors  
with cabling wired in compliance with the TIA 568A standard. When expanding  
the system using single-source A-BUS devices other than additional ABH 4000  
hubs, connect the devices to one of the A-BUS Outputs. If the device is powered  
(e.g., an ABH 4 hub), it may be connected without using the ABH 4000’s power  
supply.  
Connections to an A-BUS-Equipped Product (see Figure 1)  
Step One: Connect the ABH 4000 to the Receiver  
NOTE: Do not connect an ABH 4 hub to the ABH 4000’s Control Link Output,  
and do not connect an ABH 4000 hub to an ABH 4’s Expansion Output.  
We strongly recommend that you read this instruction sheet carefully before  
installing your new ABH 4000. If you do not have experience installing in-wall  
electrical and telecommunications components, you are advised to consult  
with a qualified low-voltage contractor or custom installer.  
Connect one end of the included RJ-45 jumper cable to the A-BUS Input  
and the other end to the A-BUS jack on the rear panel of your Harman Kardon  
receiver.  
Connections to a Non-A-BUS Product (see Figure 2)  
What Is Included  
The ABH 4000 may also be used to bring the benefits of A-BUS technology  
to virtually any audio system with a few additional steps to connect an audio feed  
and to install infrared emitters to control the source equipment. You may wish to  
have this installation completed by a trained installer who is familiar with A-BUS  
and audio/video systems integration.  
Your ABH 4000 should be packed with the following items. If any of the below  
are missing, please contact Harman Kardon customer service.  
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.  
Step Two: Connect the A-BUS Modules  
Connect the RJ-45 jacks on the Cat. 5 cabling that runs to the remote room  
modules to the A-BUS Outputs. Make certain that the connector is wired in  
accordance with the standard TIA 568A color-coding. Connect the A-BUS modules  
in the remote rooms to the Cat. 5 cable in accordance with the color-coding on  
the module. Install loudspeakers in each remote room and connect them to the  
A-BUS modules, following the manufacturers’ instructions.  
• ABH 4000 Expansion Hub • One Power Supply  
• One AC Power Cord  
• RJ-45 Connection Jumper Cable  
Audio Outputs: The ABH 4000 passes signals from the Audio Inputs straight  
through to the corresponding Audio Outputs for sharing with other devices, such  
as an A/V receiver.  
The ABH 4000 will add to your listening pleasure by distributing sound through-  
out your home with the level of performance for which Harman Kardon has been  
famous for more than fifty years.  
Step One: Connect Audio Sources  
Routed IR  
Outputs  
A-BUS  
Outputs  
Audio Inputs  
Audio Outputs  
Connect the audio outputs of up to four sources, using standard audio interconnect  
cables (not included) from the Audio Inputs on the ABH 4000 to the analog  
audio outputs of each source device, such as a preamplifier, receiver, surround  
processor, CD player, tuner or any other device equipped with line-level analog  
audio outputs. Although the Audio Inputs on the ABH 4000 are numbered  
1 through 4, these numbers do not correspond to the output zones, and one  
may select any of the four sources for playback in any of the four A-BUS  
Output zones. The numbered Audio Outputs correspond to the Audio Inputs,  
not the zones.  
Control Link Output: If you are using more than one ABH 4000 in your  
system to add additional rooms, connect one end of a jumper cable with RJ-45  
connectors to this jack. Connect the other end of the jumper cable to the Control  
Link Input on the next ABH 4000. To expand the system using an ABH 4 or  
other hub, connect one of the ABH 4000’s A-BUS Outputs to the expansion  
input on the ABH 4 or other hub. You may use one of the Bank B A-BUS  
Outputs for this purpose without connecting a power supply.  
Features  
NOTE: To control the system from the remote zones, or when a non-A-BUS-  
equipped source is used, at least one A-BUS module in each zone must have  
an infrared receiver or the ability to control the ABH 4000 (i.e., power the  
system on or off and select a source). The Harman Kardon AB 2 module is  
equipped with both an IR receiver and built-in capability to control the ABH 4000.  
The Harman Kardon AB 1 module has the necessary IR receiver. We recommend  
installing at least one AB 1 or AB 2 module in each zone.  
• Simple connection to any A-BUS-equipped Harman Kardon receiver and  
many other A-BUS products  
• Analog audio inputs and outputs, along with IR outputs, enable use with  
non-A-BUS products as well  
• Adds A-BUS capability to multiroom systems with only a single Category 5  
cable run to each remote module  
Control Link Input: Connect this jack to the Control Link Output on another  
ABH 4000 to expand the total number of rooms in your system.  
Connect the source devices as follows, to allow for the simple source control  
available with the AB 2 (as described in the Operation section):  
• Allows for up to four separate zones, each distributing an independent  
source device  
Step Three: Connect the AC Power Supply  
NOTES:  
Connect the AC Power Supply furnished with the ABH 4000 to Power Input A.  
If you have connected A-BUS modules to Bank B of the A-BUS Outputs, con-  
nect a second AC Power Supply (not included) to Power Input B. Plug each  
AC power cord into the socket on its Power Supply. Do not connect the power  
cords to an AC outlet at this time.  
Source 1: Tuner or A/V receiver  
Source 2: CD player or changer  
Source 3: DVD player  
• The Control Link Input and Output are used to pass control data between  
ABH 4000 expansion hubs in an A-BUS system. Do not connect the Control  
Link Input or Output to any device other than an ABH 4000.  
• Two banks available, allowing up to two rooms per zone  
• Expandable to up to 16 zones using additional ABH 4000 hubs  
A-BUS  
Inputs  
Trigger  
Output  
Control  
Link Output  
Power  
Inputs  
Common  
IR Output  
• Infrared (IR) commands from each zone are routed separately, allowing for  
more than one source device of a given type  
• Do not connect an ABH 4000 to the Expansion Output of an ABH 4 hub,  
as the ABH 4000 will not operate correctly.  
Source 4: Any source device  
Status IR Indicator  
Indicator  
Control  
Link Input  
Power  
Indicators  
Optional Step Four: System Expansion  
NOTE: When using an A-BUS-equipped Harman Kardon A/V receiver, do  
not use the Source 1 Audio inputs. Source 1 is the AVR connected to the  
ABH 4000’s A-BUS Input.  
• Twelve-volt trigger output may be used to power on source devices  
• Designed for easy mounting on wire back-boards, or for shelf placement  
Power Inputs: Connect the 2.5mm DC plug at the end of the ABH 4000  
power supply to Power Input A, to power Bank A of the system. If you are con-  
necting modules to Bank B of the system, a second power supply (not included)  
must be connected to Power Input B. Do not use a power supply other than one  
recommended by Harman Kardon, to avoid damaging the ABH 4000 or other  
system components.  
Up to three additional single-source or multisource hubs may be connected  
to the system. A single-source hub, such as the Harman Kardon ABH 4, is  
connected to only one source device, with the audio and control signals distrib-  
uted to the remote zones. A multisource hub, such as the ABH 4000, may be  
connected to up to four source devices, with the signals distributed to up to  
four independent zones.  
ABH 4000 Connections and Indicators  
Audio Inputs: When the ABH 4000 is used with a receiver or source devices  
without an A-BUS jack, connect the analog audio outputs from the receiver  
or source to one set of these input jacks. Up to four independent devices may  
be connected to the Audio Inputs, each of which may be selected by any one  
or more of the ABH 4000’s four output zones.  
IMPORTANT SAFETY AND INSTALLATION INFORMATION!  
Wire Separations  
Steps Two and Three are the same as in the Connections to an  
A-BUS-Equipped Product section.  
Category 5 wiring systems must be installed to minimize the possibility of accidental  
contact with hazardous power and lighting wiring. Never place Category 5 wiring  
near bare power wires or lightning rods, antennas, transformers, steam or hot  
water pipes, or heating ducts. Never place Category 5 wire in any conduit, box,  
channel, duct or other enclosure containing power or lighting circuits of any  
type. Always provide adequate separation between Category 5 wiring and other  
electrical wiring according to code. When in doubt about separation distances,  
the “Rule of Sixes” can be used. This rule requires 6 feet of separation between  
Category 5 wiring and open high-voltage wiring, lightning grounding wire or  
grounding rods. It requires 6 inches of separation from all other high-voltage wiring,  
unless in conduit. Of course, local building and electrical codes always govern.  
Step Four: Connect the IR Outputs to the Source Devices  
Power Indicators: These LEDs will light to indicate that Bank A or Bank B of the  
ABH 4000 is connected to a power source that enables the remote modules and  
the infrared relay system to operate. This power source may be either a connection  
to an A-BUS product, the ABH 4000’s power supply or through a connection to  
another ABH 4000. The ABH 4000’s external power supply must be connected  
in order for it to power multiple remote modules.  
For non-A-BUS sources, infrared (IR) signals are used to control the sources  
remotely from each local A-BUS module. It is recommended that you install  
A-BUS modules with built-in IR receivers, such as the Harman Kardon AB 1  
and AB 2, so that you may operate each of your sources.  
Multisource Hubs  
NOTES:  
Up to four ABH 4000 hubs may be connected to create 16 independent  
zones with two room outputs per zone. To expand the audio signal, connect  
the Audio Outputs to the next hub’s audio inputs. To expand the control data,  
connect an RJ-45 jumper cable from the Control Link Output to the Control  
Link Input on the next hub. Complete the system installation by following Steps  
Two and Three above.  
• When any source is selected, the ABH 4000 hub and all A-BUS modules  
connected to it that do not have individual power on/off capabilities will turn on.  
When possible, connect the IR Outputs directly to compatible IR inputs on each  
source device.  
• Audio Input 1 is wired in parallel with the A-BUS Input. If the A-BUS input is  
connected directly to an A-BUS-equipped device, no connections should be  
made to Audio Input 1.  
INSTALLATION AND CONNECTION  
Important Safety Note  
Each Routed IR Output should be connected to the IR input (or an IR emitter  
placed over the IR sensor) of the source device connected to the correspondingly  
A-BUS Input: This jack connects to the device that is providing the A-BUS  
system source that feeds the A-BUS modules used with this ABH 4000. In most  
applications, the connection will be to the A-BUS port on an A-BUS-equipped  
Harman Kardon receiver. Do not connect the A-BUS Input to the Control Link  
Output of another ABH 4000, or the expansion output of a Harman Kardon  
ABH 4 or other A-BUS expansion hub. Connect multiple hubs, using the Control  
Link Input and Output. The connection should be made using a standard  
TIA 568A RJ-45 jumper cable.  
Before beginning the installation process, turn off all electronics products in  
the system and disconnect them from their A/V power connection. This avoids  
the possibility of accidental activation that could possibly damage the equipment  
or cause personal injury. Do not turn on the equipment until instructed.  
A-BUS® Modules (Harman Kardon AB 1 and AB 2 shown)  
Cutting and Drilling  
Always observe all applicable safety rules for in-wall wiring. Be extremely careful  
not to cut through or drill into concealed wiring or pipes. Make a small inspection  
opening before cutting or drilling.  
The ABH 4000 may be used in two modes of operation. The installation  
process will vary, according to which option you select.  
Additional Installation Information  
• When used in conjunction with an A-BUS-equipped Harman Kardon product,  
the ABH 4000 provides the power that enables up to eight remote rooms to  
be equipped with A-BUS modules such as the Harman Kardon AB 1 or AB 2,  
with more room installations possible through the use of additional ABH 4000  
or ABH 4 hubs.  
Common wire-splicing techniques may cause the wire to break, resulting  
in poor circuit integrity. This can cause interference and result in poor system  
performance.  
Status Indicator: This LED will light when the ABH 4000 is activated. In most  
cases, it will light when a Harman Kardon A-BUS-equipped product connected  
to the ABH 4000 is turned on, or when a command is received from any of  
the four zones. When the ABH 4000 is used with non-A-BUS products, the  
Status Indicator will light when any of the four sources is selected. When the  
Status Indicator is lit, a 12V signal is available at the Trigger Output.  
Step Two  
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.  
• The ABH 4000 may also be used with any receiver, preamplifier or surround  
processor that has an analog audio output to send the selected source to  
A-BUS modules installed in remote rooms. Alternatively, up to four source  
devices may be connected to the ABH 4000 to create a multiroom audio  
system with up to four independent zones.  
A-BUS-Equipped Product  
Trigger Output: The Trigger Output may be used to turn on compatible devices  
when the ABH 4000 is activated, as indicated by the Status Indicator.  
Your new Harman Kardon ABH 4000 A-BUS Expansion Hub has been designed  
only for use with A-BUS products. Do not connect the RJ-45 jacks to any other  
device.  
Routed IR Outputs: When the ABH 4000 is used with non-A-BUS sources,  
these jacks may be used to route IR signals to devices with compatible remote  
IR inputs, or to optional remote IR emitters. The emitters should be placed over  
the IR receiver in the source components to be controlled. This enables a remote  
to control source components, from the room where an A-BUS module is  
installed, when the module includes an IR receiver.  
Make sure to follow all instructions when preparing wiring for use with the  
ABH 4000 Expansion Hub and associated equipment. Failure to do so may  
result in a potential safety hazard, including possible danger to persons and/or  
equipment.  
Mounting the ABH 4000 (optional)  
The ABH 4000 may be mounted on a wall, using the screw slots provided on  
the sides of the unit, or it may be placed on any flat surface.  
Step Three  
Step One  
• To mount the ABH 4000 to a wall, first make certain that there is sufficient  
clearance on all sides for any cables that will be attached.  
If you will be running RJ-45 cable through a ventilation 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.  
NOTE: The Routed IR Outputs will only emit commands from the zone that has  
selected the source, allowing connection of more than one source device of the  
same type to the ABH 4000 without concern that commands issued from one  
zone will have undesired effects on playback in another zone. However, if the  
source devices are physically near each other, you may wish to use light-block-  
ing caps with the emitters to prevent cross-communication.  
• While holding the ABH 4000 to the wall, trace the outline of the slots on the  
“wings” on the left and right sides of the ABH 4000 onto the wall.  
ABH 4000  
Installation Planning  
• Drill a pilot hole and install an anchor or retaining socket sufficient to accommodate  
a #10 pan-head Phillips-type wood screw that is at least long at each side,  
under the circular part of the tracing. If possible, attach at least one side of the  
ABH 4000 to a wall stud, instead of using a wall anchor. If you have any  
Figure 1 – Connecting the ABH 4000 to an A-BUS-equipped product  
The ABH 4000 may be placed flat on a shelf or mounted to a wire back-board  
using standard wood screws and the keyhole notches on its outer edges. The  
unit’s power supply must be placed on a shelf and should not be attached to a  
back-board. When planning an installation, allow sufficient clearance for all wires  
Common IR Output: This output passes control commands from all zones to  
compatible non-A-BUS devices, allowing control of common components. It may  
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