PA 2000 Bridgeable Multichannel Amplifier

PA 2000 Bridgeable Multichannel Amplifier
OWNER’S MANUAL
CH 1
CH 2
Power
Standby
Protect
Power
®
®
Power for the digital revolution.™
PA 2000 Bridgeable Multichannel Amplifier
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4
4
5
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8
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Introduction
Safety Information
Unpacking and Installation
Front Panel Controls and Indicators
Rear Panel Connections
Installation and Configuration
Channel Configuration and
Speaker Connections
Speaker Wire Connections
Audio Signal Connections
Operation
Service Information
Troubleshooting Guide
Technical Specifications
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
¡ – (number in a circle) indicates a rear panel connection
2 TABLE OF CONTENTS
Introduction
Congratulations! As the owner of a PA 2000
Multichannel/Multizone Power Amplifier, you
have at your command a unique product. The
PA 2000 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 2000 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
PA 2000 provides the flexibility for a variety of
applications. In the four-channel/two-pair output mode, the input is routed to two pairs of
speakers for use with AV receivers equipped
with multiroom capability. In the two-channel
bridged mode, a high-output stereo pair is
available for use as the rear surround channels
in a 7.1 channel system or for use with a stereo
preamplifier. For installations requiring multiple
amplifiers, a pair of parallel outputs allows the
same signal to be fed to multiple PA 2000s. To
allow the widest range of system options, the
PA 2000 includes both Music Sense circuitry,
which automatically turns the amplifier on
when an audio signal is present, and a lowvoltage 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
■ Bridgeable Multichannel Amplifier
powers one or two stereo pairs
■ High-current, ultrawide-bandwidth
design
■ Parallel line-level-out connections
permit amplifiers to be cascaded for
system use
■ Music Sense circuitry and low-voltage trigger connection for automatic
turn-on
■ 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 compatible with long speaker wire runs
that may be necessary in a wholehouse multiroom system
C A U T IO N
RISK OF ELECTRIC SHOCK
DO NOT OPEN
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.
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.
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.
3 INTRODUCTION
Safety Information
Important Safety Information
Verify Line Voltage Before Use
Your new Harman Kardon PA 2000 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 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.
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.
■ 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.
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.
■ 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 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.
4 SAFETY INFORMATION
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.
■ 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. 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.
Front Panel Controls and Indicators
CH 1
CH 2
Power
Standby
Protect
Power
1
2
1 Power Switch
2 Power Indicators
3
4
3
2
3 Standby Indicators
4 Protect Indicators
1 Power Switch: Press this switch to turn
the PA 2000 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 Trigger position.
2 Power Indicators: These indicators will
light when either of the channel pairs is on.
3 Standby Indicators: These indicators will
light when AC mains power is applied to either
of the channel pairs, but when that 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 § or when there is an audio
signal applied to the Input Jack ¡.
4 Protect Indicators: These indicators will
light when either 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.
5 FRONT PANEL CONTROLS & INDICATORS
Rear Panel Connections
260W
¡
™
£
¢
£
∞
§
¶
•
ª
¡ Input Jacks
™ Output Jacks
£ Power Control Mode Switches
¢ Output Level Trim Controls
∞ Bridge/Normal Switch
§ Trigger Jack
¶ Channel 1 Output Speaker Terminals
• Channel 2 Output Speaker Terminals
ª AC Power Cord Receptacle
¡ Input Jacks: Connect these jacks to the
left/right output of the AV receiver, preamp, surround processor, multiroom controller or other
source used to feed the PA 2000.
¢ Output Level Trim Controls (One for each
channel pair) These trim controls are used to
adjust the output level for each channel pair.
¶ Channel 1 Output Speaker Terminals:
Connect these terminals to the speaker pair that
is fed by the Channel 1 amplifier section.
∞ Bridge/Normal Switch: This switch determines whether the unit operates in the
“Bridged” condition or in the Normal mode.
Please be certain to disconnect the power from
the unit when operating this switch.
• Channel 2 Output Speaker Terminals:
Connect these terminals to the speaker pair that
is fed by the Channel 2 amplifier section.
™ Output Jacks: These jacks provide a parallel
feed of the input signal. In systems where more
than one PA 2000 is used, they may be connected
to the Input Jacks of the additional amplifier.
£ Power Control Mode Switch: (One for
each channel pair) This three-position switch
determines the method by which the PA 2000
will be placed in the active, or ON, position for
10 to 15 minutes:
• When the switch is in the far right position,
under ON, the unit will be turned on when the
front panel Power Switch 1 is pressed in.
• When the switch is in the middle position, over
the words “AC/DC TRIGGER”, the unit will
automatically turn on when a 3-volt to 30-volt
signal is applied to the Trigger Jack §.
• When the switch is in the far left position,
under the words “MUSIC SENSE”, the unit will
automatically turn on when an audio signal is
present at the Input Jacks ¡. The unit will
automatically turn off when the signal is no
longer present.
6 REAR PANEL CONNECTIONS
• When the switch is in the right position, over
the word “NORMAL”, the unit will provide two
output feed pairs for a total of four output
channels.
• When the switch is in the left position, under
the word “BRIDGED”, the unit will function as
a stereo amplifier, with a single high-power
output feed into two output channels.
§ Trigger Jack: Connect this jack to the output of a compatible product capable of feeding
a 3-volt to 30-volt signal to the jack when
amplifier operation is desired. When one of the
channel pairs has the Power Control Mode
Switch £ set to the middle, or AC/DC trigger,
position, that channel pair will automatically
turn on when the low-voltage trigger signal is
present. To automatically turn all channels on
via the trigger, BOTH Power Control Mode
Switches £ should be set to the trigger
position.
NOTE: When the amplifier is operated in the
Bridged configuration, connect the speakers as
shown on Page 8.
ª AC Power Cord Receptacle: Connect the
AC power cord supplied with the unit to this
receptacle, and connect the power cord plug to
an AC outlet.
Installation and Configuration
SAFETY NOTE: When making connections
between any source components such
as AV receivers, surround processors or
multiroom controllers and the PA 2000,
or when making any connections to
speakers, be certain that both the source
device and the PA 2000 are turned off. To
ensure that there will be no unwanted
signal transients that can damage equipment or speakers, it is always best to
unplug all equipment before making any
connections. Modern electronic products
often have a “standby” mode that may
be activated even though the product
may appear to be turned off.
Power Control Connections
The PA 2000 features a built-in remote turn-on
system that will automatically turn on either or
both of the amplifier pairs in one of three ways.
Depending on your specific application, the unit
may be turned on manually using the Power
Switch 1, or via automatic sensing of either
an input source or a low-voltage trigger signal.
For manual operation, no special installation is
required. For automatic turn-on, follow the
instructions below for the chosen trigger
method.
Note that when the unit is operated in the
standard, two-pair output mode, each of the
channel pairs may be operated by the same
trigger method, or they may be turned on via
different methods.
Remote Turn-On From an External Device
Using the Low-Voltage Trigger
To configure the PA 2000 so that either or both
of the channel pairs turn on automatically in
response to a low-voltage trigger signal, follow
these steps:
1. Place the Power Control Mode Switch
£ for either channel in the center position,
so that the switch is over the words “AC/DC
TRIGGER”.
2a.To trigger the amplifier from a device such
as a preamp surround processor or multiroom controller with a built-in trigger jack,
connect one end of a cable with a 3.5mm
mono mini-plug to the Trigger Jack § on
the PA 2000. Connect the other end to a
matching jack on the device that will provide a 3-volt to 30-volt signal when the unit
is to be turned on.
or
2b.To trigger the amplifier using the switched
AC accessory outlet on an AV receiver or
other source device, purchase a small AC to
DC power converter, as is typically used to
replace the batteries in portable electronics
devices. Select a model that is capable of
delivering 3 to 12 volts DC, and make certain that one of the “tips” provided with the
unit is a 3.5mm mini-plug. Plug the transformer end of the converter into the
switched AC output on the source product,
and connect the 3.5mm mini-plug to the
Trigger Jack §.
3. Press the Power Switch 1 in so that it is
engaged, and note that the Standby
Indicator 3 will light for the channel pairs
selected for trigger control operation.
When the source control unit providing the
power is turned on, the PA 2000 will automatically turn on. When the source unit is turned
off, the PA 2000 will return to the Standby
mode.
Remote Turn-On Using Music Sense
To configure the PA 2000 so that either or both
of the channel pairs turn on automatically
when the amplifier is receiving an audio signal,
follow these steps:
• Connect the audio input as normal to the
audio Input Jacks ¡.
• For each channel pair that you wish to control using an incoming audio signal, slide the
Power Control Mode Switch £ to the
far left so that the switch is under the words
“MUSIC SENSE”.
• Press the Power Switch 1 in so that it is
engaged, and note that the Standby
Indicator 3 will light for the channel pairs
selected for trigger control operation.
In this configuration, the PA 2000 will automatically turn on whenever it is receiving an audio
input signal. The unit will return to the Standby
mode 10 to 15 minutes after the audio signal
stops.
NOTE: When the PA 2000 is used in the
Bridged mode as a single-pair stereo amplifier,
use the Power Control Mode Switch £ in
the area labeled “BRIDGE/CHANNEL ONE” to
make the settings for the desired turn-on mode.
7 INSTALLATION & CONFIGURATION
Channel Configuration and Speaker Connections
Two-Pair Output
One-Pair Output (Bridged Operation)
For use in multiroom applications, the PA 2000
may be used to send the same signal feed to
two separate locations, such as living room and
dining room speakers. While each room will
receive the same feed, the volume may be controlled by using the channel Output Level
Trim Controls ¢ or optional in-wall volume
controls.
The PA 2000 is a bridgeable amplifier, which
means that the two pairs of medium-powered
amplifiers may also be combined, or “bridged”,
to form a higher-powered stereo amplifier with
a single pair of outputs. This type of operation
is suitable for use in powering the rear surround channels of a 7.1 surround-sound system, or for general use as a high-quality, highpower stereo amplifier for a main listening
room or remote room applications.
The PA 2000 is factory-shipped to operate in
this configuration, but it is always a good idea
to double-check the switch setting to make certain that it is correct. For two-pair output, the
Bridge/Normal Switch ∞ should be set so
that the switch is on the right side, over the
word “NORMAL”. To ensure that the switch setting is not changed, make certain that the plastic switch guard is installed once the proper
setting is made.
To connect speakers when the PA 2000 is used
in the two-pair output mode, connect one pair
of speakers to the Channel 1 Output
Speaker Terminals ¶, and the other pair to
the Channel 2 Output Speaker Terminals
•. (See Figure 1.)
Right Speaker
+
–
+
–
Right Speaker
Left Speaker
Channel
One
Channel
Two
+
–
+
–
To configure the PA 2000 for use as a singlepair stereo amplifier, follow these steps:
• Disconnect the power from the unit.
• Locate the Bridge/Normal Switch ∞ on
the rear panel, and use a #1 Phillips screwdriver to carefully remove the screws on
either side of the plastic switch guard.
Remove the plastic guard and set it aside
with the screws.
• Slide the switch to the left so that it is under
the word “BRIDGE”.
• Replace the plastic switch guard so that it
secures the switch in the desired position.
• Replace the two screws to secure the plastic
guard.
To connect speakers when the PA 2000 is used
as a stereo amplifier, an alternative connection
method is used. As shown in Figure 2, connect
the speakers to the terminals shown
on the rear panel as “BRIDGE +/–”, with the
connections made vertically, as opposed to the
horizontally oriented connections used in twopair output use. Note that the negative, or “–”,
terminal used for bridged operation is normally
marked as “+” for use in two-pair use. For
bridged operation, please observe the Bridge
markings, not the markings used for the Ch. 2
output.
Left Speaker
Figure 1
+
—
Right Speaker
Figure 2
8 CHANNEL CONFIGURATION
+
—
Left Speaker
Speaker Wire Connections
Regardless of the channel configuration used,
the final step of the installation process is to
connect the amplifier to your speakers, using
high-quality cable. The PA 2000 is equipped
with binding post terminals that accept bare
wire, spade lugs or banana-type plugs, when
they are permitted by local safety agencies.
Once you have located the proper speaker terminals for the type of output configuration in
use, connect your speakers using the following
guidelines.
To ensure that the high-quality signals produced by your PA 2000 are carried to your
speakers without loss of clarity or resolution,
we recommend that you use high-quality
speaker cable. Many brands of cable are available, and the choice of cable may be influenced
by the distance between your speakers and the
amplifier, the type of speakers you use, personal
preferences and other factors. Your dealer or
installer is a valuable resource to consult in
selecting the proper cable for connections
between your amplifier and speakers.
Regardless of the brand or type of cable selected,
we recommend that you use a cable constructed
of fine, multistrand copper with a gauge of 14
or larger. Remember that in specifying cable,
the lower the number, the thicker the cable.
Cable with a gauge of 16 may be used for
short runs of less than ten feet. We do not recommend that you use any cables with an AWG
equivalent of 18 or higher, due to the power
loss and degradation in performance that will
occur.
Cables that are run inside walls should have
the appropriate markings to indicate that they
are listed with UL, CSA or other testing agency
standards. Questions about cables inside walls
should be referred to a qualified installer or a
licensed electrical contractor who is familiar
with the NEC and/or the applicable local building codes in your area.
If bare wire is used for the connections, strip
approximately 1/2 inch to 3/4 inch of insulation
from the end of each wire and carefully twist
the strands of each conductor together. Be
careful not to cut the individual strands or twist
them off; for optimal performance, all strands
must be used.
Then, loosen the knobs of the speaker output
terminals far enough so that the pass-through
hole is revealed. In order to preserve proper
stereo imaging and low-frequency reproduction,
it is essential that proper polarity be observed
when connecting speakers to the PA 2000. Be
sure to connect the negative terminal for each
channel on the PA 2000 to the negative terminal on the speaker, and the positive terminal on
the PA 2000 to the positive terminal on the
speaker. Note that one conductor of the speaker
cable will have no markings and the other will
have a red line, brand name markings, a black
thread or some other positive indication. Follow
the proper connection instructions for your system with regard to which terminals are used.
The small speaker icons next to each pair of terminal posts will guide you to the correct connections. When the connections are made, twist
the cap back so that the connection is secured,
but do not overtighten or use tools, as this may
break the delicate wire strands and decrease
system performance.
If you are using spade lugs, connect them to
the wire using the manufacturer’s instructions
and then loosen the caps on the speaker terminals. Place the lugs between the plastic cap and
the back of the terminal, as if it were a horseshoe on the game’s post. Be sure to observe
proper polarity, using the appropriate speaker
hook-up icons for your system’s configuration.
Tighten with your fingers to obtain a positive
contact.
Finally, connect the wires to the speakers,
again, being certain to observe proper polarity.
Remember to connect your “negative” or
“black” wire to the matching terminal on the
speaker. Similarly, the “positive” or “red” wire
should be connected to the like terminal on the
speaker.
NOTE: While most speaker manufacturers
adhere to an industry convention of using black
terminals for negative and red ones for positive,
some manufacturers may vary from this configuration. To ensure proper phase connections
and optimal performance, consult the identification plate on your speaker terminals, or the
speaker’s manual to verify polarity. If you do
not know the polarity of your speaker, ask your
dealer or installer for advice before proceeding,
or consult the speaker’s manufacturer.
As a general rule, avoid running input signal or
speaker wire connections in parallel with each
other, or with AC power cords. This can result in
undesired hum or other interference that will
greatly degrade signal performance.
When banana plugs are permitted, connections
may be made by simply inserting the jack
affixed to your speaker wire into the hole provided on the rear of the colored screw caps on
the binding posts. Before using banana-type
jacks, make certain that the plastic screw caps
are firmly tightened down by turning them in a
clockwise direction until they are snug against
the chassis. This will ensure that the maximum
surface area of the plug is in contact with the
jack. Be certain to observe proper polarity.
Finally, run the cables to the speaker locations.
Where possible, it is recommended that the
length of cable connecting any pair of speakers
be identical, even though one speaker may be
physically closer to the amplifier than the other.
Do not coil any excess cable, as this may
become an inductor that creates frequency
response variations in your system.
9 SPEAKER WIRE CONNECTIONS
Audio Signal Connections
Audio connections for the PA 2000 are straightforward: connect the output of the source unit,
which may be the multiroom outputs of an AV
receiver or “whole-house” audio system or the
rear surround outputs of a processor or a
receiver to the audio Input Jacks ¡.
In some multiroom systems, you may wish to
have the same signal feed multiple amplifiers.
In that type of installation, the input feed to the
PA 2000 may be daisy-chained to an additional
amplifier by connecting the audio Output
Jacks ™ on the PA 2000 to the input jacks on
a second PA 2000 or another amplifier.
When making connections with the RCA-type
plugs on interconnect cables, make certain to
gently but firmly insert them into the jacks on
the back of the PA 2000. Loose connections
can cause intermittent sound and may damage
your speakers. The barrel assembly of some
high-quality RCA plugs may be very tight, and it
is important to ensure a proper connection
between the interconnection cable and the
input jack.
AC Power Connection
The final step in the installation of the PA 2000
is to connect the power cord. First, connect the
female end of the cord into the AC Power
Cord Receptacle ª on the rear panel.
Once the cord as been firmly connected to
the PA 2000, insert the plug end into an AC
power outlet.
SAFETY NOTES:
• Due to the current draw of the PA 2000, DO
NOT connect the power cord to the accessory
outlet on audio/video components.
• Should the power cord become lost or damaged, be certain to replace it with a replacement that meets or exceed the original specifications. Use of power cords with insufficient
capacity, such as those used with computers
or office equipment, may create a safety
hazard.
10 AUDIO SIGNAL CONNECTIONS
Operation
Operation of the PA 2000 is simple. In normal
use, there are no controls to adjust once the
installation is complete.
After all connections have been made to the
amplifier’s inputs and speaker terminals, and
the AC power cord has been connected, the
way in which the unit turns on is determined by
the settings for the Power Control Mode
Switches £. Depending on the settings, as
described on page 7, the amplifier will turn on
in one of these three ways:
• When the Power Control Mode Switches
£ are set to the right, in the ON position,
the PA 2000 will turn on when the Power
Switch 1 is pressed in. Press the switch
again to turn the amp off.
• When the Power Control Mode Switches
£ are set in the middle, in the “AC/DC
TRIGGER” position, the Power Switch 1
should be pressed in to place the PA 2000 in
the Standby mode. The unit will now turn on
automatically when a low-voltage signal is
present at the Trigger Jack §.
• When the Power Control Mode Switches
£ are set to the far left, in the “MUSIC
SENSE” position, the Power Switch 1
should be pressed in to place the PA 2000 in
the Standby mode. The unit will now turn on
automatically whenever an audio signal is
present. The unit will return to the Standby
mode 10 to 15 minutes after the audio signal
is removed.
As a general rule, it’s always a good idea to
turn on your amplifier LAST. This avoids the possibility of any turn-on pops or transients from
other equipment being amplified and sent to
your speakers where they may cause damage.
Always start with a low volume level on your
receiver, controller or preamp to avoid damage
to your speakers.
SAFETY NOTE: To prevent unintended operation, remember to turn the unit completely off
when it will not be used for an extended period
of time. This is done by pressing the Power
Switch 1 and noting that the Standby
Indicator 3 goes out. This will prevent the
automatic turn-on circuits from accidentally
turning the amplifier on during your absence.
Output Level Adjustment
In normal operation, the source unit controls
the volume for signals fed to the PA 2000. This
is particularly important for surround-sound
applications, as the volume to all channels in a
system, regardless of the amplifier, should be
equal in order to ensure proper reproduction. In
most cases, the factory volume setting is appropriate and need not be changed.
However, in some instances it may be necessary
to vary the output level of the PA 2000, either
to match the levels for surround systems, or to
set a fixed volume level for a remote room
speaker. In these cases, the PA 2000’s output
volume may be adjusted by turning the Output
Level Trim Control ¢ on the rear panel.
When adjustment is required, turn the knob in
either direction until the desired level is
achieved.
When the PA 2000 is operated in the Bridged
configuration, use the Output Level Trim
Control ¢ labeled “VOL. 1” to make adjustments.
NOTE: The Output Level Trim Controls operate
for both speakers in a given channel. You may
adjust the output of one channel pair or the
other, but it is not possible to individually adjust
either the separate left or right channel output
within a given channel pair.
You are now ready to enjoy the finest sonic
performance available.
11 OPERATION
Service Information
If your installation has followed the procedures
in this manual, you should enjoy many years of
trouble-free operation and high-quality listening
enjoyment. The PA 2000 does not contain any
user-serviceable parts. If you suspect a problem
that may require service assistance, contact
your dealer, installer or an authorized Harman
Kardon service depot.
You may also contact Harman Kardon at
www.harmankardon.com.
It is important that any repairs be carried out
only by an authorized Harman Kardon service
agent to ensure proper service and preserve the
protection of your Limited Warranty. It’s a good
idea to keep your sales slip or receipt in a safe
place (along with this manual) so that it will be
available to verify the purchase date for warranty claims.
Input/Output Protection Mode
Under some conditions, such as a shorted
speaker wire, DC voltage on an input connection or thermal overload, the Harman Kardon
PA 2000 will place itself in a Protect mode to
prevent damage to the amplifier. When this
happens, the Protect Indicator 4 will light.
When this occurs, IMMEDIATELY turn off the
unit using the power switch and correct the
problem. Then turn the unit back on. If the unit
continues to go into a Protect mode, contact
your dealer or installer for assistance.
12 SERVICE INFORMATION
Troubleshooting Guide
The items listed below are a brief guide to minor problems that may arise with audio equipment such as the PA 2000. Before taking a unit in for service,
you should check to see whether any of these hints solve the problem. If these solutions do not rectify the problem or if the problem recurs, contact your
dealer or an authorized Harman Kardon service depot for assistance.
SYMPTOM
CAUSE
SOLUTION
Amplifier will not turn on.
• Power switch turned off
(no power light LED).
• Remote trigger cable not properly
connected.
• Turn on power switch.
• Verify connection of trigger cable at both ends.
Amplifier turns on, but there’s no audio
from one or more channels.
• Inputs not connected to proper jack.
• Speakers not connected properly.
• Improper settings or levels from
processor or controller.
• Check input connections.
• Check speaker connections.
• Check the settings on your preamp, processor or controller.
Audio plays, then cuts off.
• Amplifier shorted
(Protect Indicator lights).
• Check speaker connections for short circuit.
13 TROUBLESHOOTING GUIDE
Technical Specifications
Power Output
Normal Mode
Bridged Mode
4 x 45 watts @ 8 ohms, 20Hz – 20kHz, <0.07% THD, all channels driven
2 x 100 watts @ 8 ohms, 20Hz – 20kHz, <0.07% THD, all channels driven
High-Current Capability
±45 amps
Frequency Response
<1Hz – 170kHz, –3dB at 1 watt
Signal-to-Noise Ratio
110dB at rated power 45 watts
THD/IMD
Less than 0.07% at rated output
Power Bandwidth
<1Hz – 100kHz
Input Impedance
47K ohms
Input Sensitivity
1 volt for rated output
Remote Trigger Voltage
3 – 30 volts AC/DC
Remote Trigger Impedance
20K ohms
Dimensions (H x W x D)
6-1/8" x 17-3/8" x 15-3/4"
155mm x 442mm x 400mm
Weight
25.3 lb/11.4kg
Power Requirements
120VAC, 50Hz/60Hz
260 watts, maximum
14 TECHNICAL SPECIFICATIONS
Notes
15 NOTES
250 Crossways Park Drive, Woodbury, New York 11797
www.harmankardon.com
© 2000 Harman Kardon, Incorporated
Part No.: YIAM-K2000-01A