PA 4000
PA 4000 Bridgeable Multichannel/Multipurpose Amplifier
OWNER’S MANUAL
Power
CH 1
CH 2
Stand by
Power
Protect
CH 3
CH 4
PA 4000
Power for the Digital Revolution.
™
®
2 TABLE OF CONTENTS
3 Introduction
4 Safety Information
4 Unpacking and Installation
5 Front-Panel Controls and Indicators
6 Rear-Panel Connections
8 Installation and Configuration
8 Power Control Connections
8 Manual Operation
8 Remote Turn-On Using Music Sense
8 Keypad Control
9 Channel Configurations,Audio
Connections & Speaker Connections
9 One Input/Four Outputs
9 One Input/Three Outputs
9 One Input/Two Outputs
10 Two Inputs/Four Outputs
10 Two Inputs/Three Outputs
10 Two Inputs/Two Outputs
10 Note for Audio Connections
11 Speaker Wire Connections
12 System Connections
12 Parallel Output Connection
12 Infrared Control Connections
12 Keypad Connections
12 AC Power Connection
13 Operation
13 Volume Control &
Output Level Adjustment
13 Turn-On Volume Level Limits
14 Service Information
14 Fuse Replacement
14 Troubleshooting Guide
15 Technical Specifications
PA 4000 Bridgeable Multichannel/Multipurpose Amplifier
Typographical Conventions
In order to help you use this manual with the front-panel controls and rear-panel connections,
certain conventions have been used.
EXAMPLE – (bold type) indicates a specific front-panel button or rear-panel connection jack
1 – (number in a square) indicates a specific front-panel control or indicator
¡ – (number in a circle) indicates a rear-panel connection
3 INTRODUCTION
Introduction
Congratulations!As the owner of a PA 4000
Power Amplifier, you have at your command a
unique product.The PA 4000 has been carefully
designed to deliver the best possible sonic
performance,along with unique features that
make it as much at home in a multiroom
audio system as it is in providing power to the
additional surround channels required for the
latest digital audio formats.
The PA 4000 is alone among audio power
amplifiers in being designed to accommodate
the long speaker runs required for multiroom
applications without sacrificing the ultrawidebandwidth circuitry and high-current capability
technologies that are key to Harman Kardon’s
long-standing tradition of audio amplifier excellence.As an added audiophile touch, five-way
speaker terminals ensure a secure connection
to large-gauge speaker wire,and individual
output level trim controls enable output balance to be set precisely.
Along with power and performance,the
PA4000 provides the flexibility for a variety of
applications.Depending on your needs and system requirements: the PA 4000 may be configured to serve as a two-channel, high-power
amplifier for the rear surround channels in the
new 6.1 or 7.1 digital audio systems; it may be
used to power two separate remote zones or
four separate remote rooms;or – for the ultimate in flexibility – it can even provide power
to a multiroom zone and rear surround channels at the same time! To allow the widest
range of system options,the PA 4000 includes
both Music Sense circuitry,which automatically
turns the amplifier on when an audio signal is
present, and a low-voltage trigger for compatibility with multiroom controllers.
In order to fully enjoy the performance of your
amplifier, please take a few minutes to read this
owner’s manual.It contains important information that will help you to make certain that the
amplifier is properly configured for operation
with the rest of the equipment in your system.
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.
Welcome to the Harman Kardon family.We
wish you many years of listening pleasure!
Features
■ Dual-Input Bridgeable Multichannel
Amplifier
■ High-current, ultrawide-bandwidth
design
■ Dual-input design allows two
separate signals to be used for
simultaneous multizone and surround
channel or stereo listening
■ Parallel line-level output connections
permit amplifiers to be cascaded for
system use
■ Music Sense circuitry and low-volt-
age trigger connection for automatic
turn-on
■ IR and keypad inputs for all output
channels permit individual remote
volume control
■ Five-way binding post terminals
accommodate large-gauge
speaker cable
■ Massive heatsinks for quiet, fan-free
convection cooling
■ Output level trim controls
■ Removable IEC power cord
■ Specially optimized circuitry is com-
patible with long speaker wire runs
that may be necessary in a wholehouse multiroom system
CAUTION:
TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE
COVER (OR BACK). NO USER-SERVICEABLE PARTS INSIDE. REFER
SERVICING TO QUALIFIED SERVICE PERSONNEL.
WARNING:
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,
DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.
CAUTION:
TO PREVENT ELECTRIC SHOCK, MATCH WIDE
BLADE OF PLUG TO WIDE SLOT, FULLY INSERT.
ATTENTION:
POUR EVITER LES CHOCS ELECTRIQUES, INRODUIRE LA
LAME LA PLUS LARGE DE LA FICHE DANS LA BORNE CORRESPONDANTE DE
LA PRISE ET POUSSER JUSQU'AU FOND.
The lightning flash with arrowhead
symbol, within an equilateral triangle, is
intended to alert the user to the
presence of uninsulated “dangerous voltage”
within the product’s enclosure that may be of
sufficient magnitude to constitute a risk of
electric shock to persons.
The exclamation point within an
equilateral triangle is intended to
alert the user to the presence of
important operating and maintenance
(servicing) instructions in the literature
accompanying the appliance.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
4 SAFETY INFORMATION
Safety Information
Important Safety Information
Verify Line Voltage Before Use
Your new Harman Kardon PA4000 amplifier
has been factory-configured for use with 120volt AC line current.Connecting the amplifier to
a line voltage other than that for which it is
intended can create a safety and fire hazard,
and may damage the amplifier.
If you have any questions about the voltage
requirements for your specific model, or about
the line voltage in your area, contact your selling dealer before plugging the unit into a wall
outlet.
Verify AC Circuit Capacity Before Use
High-power output of your amplifier may
require heavy current draw under full load conditions.To ensure proper performance and
avoid potential safety hazards,we recommend
that it be connected to a circuit with 20-amp
capacity.Connecting multiple amplifiers to the
same circuit, or connecting the amplifier to a
circuit used by other heavy-power devices,such
as high-wattage lights,may cause circuit breakers to trip.It is always a good idea to avoid
using any audio equipment on the same AC circuit as equipment with motors,such as air conditioners or refrigerators.This will lessen the
possibility of power variation and electrical
start-up noise affecting your sound system.
Do Not Use Extension Cords
To avoid safety hazards,use only the power
cord supplied with your unit. If a replacement
cord is used, make certain that it is of a similar
gauge.We do not recommend using extension
cords with this product.As with all electrical
devices,do not run power cords under rugs or
carpets or place heavy objects on power cords.
Damaged power cords should be replaced
immediately with cords meeting factory specifications.
Handle the AC Power Cord Gently
When disconnecting the power cord from an
AC outlet,always pull the plug;never pull the
cord. If you do not intend to use the amplifier
for a considerable length of time,disconnect
the plug from the AC outlet.
Do Not Open the Cabinet
There are no user-serviceable components
inside this product. Opening the cabinet may
present a shock hazard, and any modification
to the product will void your guarantee.If water
enters the unit, or any metal object such as a
paper clip,wire or staple accidentally falls
inside the cabinet, disconnect the unit from the
AC power source immediately and consult an
authorized warranty station.
Installation Location
■To ensure proper operation and to avoid the
potential for safety hazards,place the unit
on a firm and level surface.When placing the
unit on a shelf,be certain that the shelf and
any mounting hardware can support the
amplifier’s weight.
■
Make certain that the proper space is provided
both above and below the unit for ventilation. If the amplifier will be installed in a
cabinet or other enclosed area, make certain
that there is sufficient air movement within
the cabinet. Consult with your dealer or
installer for more information.
■ Do not place the unit directly on a carpeted
surface.
■Avoid installation in extremely hot or cold
locations,in an area that is exposed to direct
sunlight or near heating equipment.
■Avoid moist or humid locations.
■ Do not obstruct the ventilation slots on the
top of the unit or place objects directly over
them. Remember, power amplifiers generate
heat, and the heatsink fins and ventilation
slots that form part of the cabinet are specially designed to remove this heat. Placing
other electronic equipment near these heatdissipation systems may possibly affect the
long-term reliability of both your amplifier
and the objects placed above it.
Cleaning
When the unit gets dirty,wipe it with a clean,
soft and dry cloth. If necessary,first wipe the
surface with a soft cloth slightly dampened
with mild soapy water,followed by a fresh cloth
with clean water.Wipe immediately with a dry
cloth. Never use benzene,thinner,alcohol or
any other volatile cleaning agent. Do not use
abrasive cleaners,as they may damage the finish of metal parts.Avoid spraying insecticide
near the unit.
Moving the Unit
Before moving the unit, be certain to disconnect any interconnection cords with other components,and make certain that you disconnect
the unit from the AC outlet.
Unpacking and Installation
The carton and shipping materials used in protecting your new amplifier were specially
designed to cushion it from the shocks and
vibration of shipping.We suggest that you save
the carton and packing materials for use in
shipping if you move or if the unit ever needs
repair.
To minimize the size of the carton in storage,
you may wish to flatten it. Carefully remove any
staples used to close carton seams; carefully slit
the tape on the bottom and collapse the carton. Other cardboard inserts may be stored in
the same manner. Packing materials that cannot be collapsed should be saved along with
the carton in a plastic bag.
When positioning the amplifier in its final location, make certain that it has adequate ventilation on all sides,as well as on the top and bottom. Do not place CDs,record jackets, owner’s
manuals or other paper on top of or beneath
the unit or in between multiple amplifiers in a
stack.This will block the air flow,causing
degraded performance and a possible fire hazard. If the unit is to be enclosed in a cabinet or
rack,make certain that there is adequate air
circulation, with means provided for hot air to
exit and for cool air to be brought in.
5 FRONT-PANEL CONTROLS & INDICATORS
1 Power Switch: Press this switch to turn
the PA 4000 on for manual operation when the
Power Control Mode Switch · for one or
both channel pairs is in the ON position, or to
place it in the Standby mode when the
Power
Control Mode Switch
· for one or both
channel pairs is in either the Music Sense or
AC/DC T rigger position.
2 Power Indicators:These indicators will
light when any of the channel pairs are on.
3 Standby Indicators: These indicators will
light when AC mains power is applied,but
when a specific channel pair is not currently
active.In this condition, the channel pair associated with the indicator is ready to turn on
when a signal is applied to the
Trigger Jack
fi or when there is an audio signal applied to
either
Input Jack ⁄›.
4 Protect Indicators: These indicators will
light when one of the channel pairs is in the
Protect mode.When one of these indicators
lights,turn the unit off immediately and check
for a problem, such as a short in the speaker
wiring.
Front-Panel Controls and Indicators
1 Power Switch
2 Power Indicators
3 Standby Indicators
4 Protect Indicators
Power
CH 1
CH 2
Stand by
Power
Protect
CH 3
CH 4
PA 4000
1
3
3
2
2
4
4
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