HK 970 Integrated Amplifier
OWNER’S MANUAL
®
Power for the Digital Revolution
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Introduction
Congratulations on your choice of the
Harman Kardon HK 970 Integrated Amplifier.
To ensure sufficient ventilation, the product
should be placed in an open area with free air
flow.
General instructions
Always Use at 230V AC
In order to obtain the best performance from
this integrated amplifier, please be sure to read
this owner's manual and use your integrated
amplifier only in accordance with its instructions.
This unit is designed for operation with 230VAC.
Use only domestic AC outlets. Connecting the
unit to an outlet supplying a higher voltage may
create a fire hazard.
Do not place a CD player or other equipment
on top of the amplifier.
Do not expose the amplifier to dripping or
splashing. Do not place objects filled with liquids,
such as vases, on or near the amplifier.
The special features of this unit include:
Handle the Power Cord Gently
Do not disconnect the plug from the AC outlet
by pulling the cord; always pull the plug itself.
Pulling the cord may damage it. If you do not
intend to use your unit for any considerable
length of time, turn the unit off completely by
taking the power cord out of the AC wall outlet.
Do not place furniture or other heavy objects on
the cord, and try to avoid dropping heavy
objects on it. Also do not tie a knot in the power
cord. Not only may the cord be damaged, it can
also cause a short circuit with a consequent fire
hazard.
HCC
(High Instantaneous Current Capability)
The amplifier sections react rapidly to musical
transients, providing the instantaneous current
necessary to precisely drive and control nearly
any loudspeaker system.
Moving the Unit
Before moving the unit, be sure to pull out the
power cord from the AC outlet and disconnect
the interconnection cords with other units.
Do Not Open the Cabinet
Ultrawide Bandwidth
To prevent shock hazard, do not tamper with
internal components for inspection or mainte-
nance. Harman Kardon does not guarantee
against performance degradation resulting from
any modification. If water, a hairpin or wire acci-
dentally enters the unit, immediately pull the
plug from the AC outlet to prevent shock and
consult an authorized Harman Kardon service
station. If you use the unit under this condition,
it may cause a fire shock hazard.
The bandwidth of this unit is exceptionally wide
and is independent of negative feedback. This
improves transient accuracy and phase linearity.
Low Negative Feedback
This unit has been designed to have low distor-
tion and wide bandwidth without high negative
feedback. This further improves its dynamic
accuracy.
Place of installation
Place the unit on a firm and level surface.
Avoid installing your unit under the following
conditions:
Discrete Component Circuitry
I Moist or humid places.
Cleaning
In order to achieve the above goals, all discrete
electronic circuitry has been employed. No
available integrated circuits could provide this
high level of performance.
I Places exposed to direct sunlight or
close to heating equipment.
If the unit gets dirty, wipe it with a soft dry cloth.
If necessary, wipe it with a soft cloth dampened
with mild soapy water and then with a dry cloth.
Never use benzene, thinner, alcohol or other
volatile agents, and avoid spraying an insecticide
near the unit.
I Extremely cold locations.
I Places subject to excessive vibration
or dust.
Sophisticated Electronic
Protection Circuitry
Harman Kardon's unique protection circuitry
guards the amplifier from short circuit or
damaged speakers and wires, without impairing
sound quality by the use of current limiting or
output relays.
I Poorly ventilated places.
Warning Signs
If you detect an abnormal smell or smoke,
immediately turn the amplifier off and unplug
the power cord. Contact your dealer or nearest
Harman Kardon service center.
Provide sufficient ventilation, do not block
ventilation openings.
Do not obstruct the ventilation slots on the top
surface of the unit by placing objects on them.
Otherwise, the temperature inside the unit may
rise, possibly affecting its long-term reliability.
Packaging
Save all packing material. It is essential for
shipping, should you move, or in the event the
unit ever needs repair.
INTRODUCTION 3
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Connections
CD Recorder
Speaker System 1
Left channel
Cassette Tape Deck
Speaker System 1
Right channel
Record Player
To wall
outlet
Right channel
Speaker System 2
Left channel
Speaker System 2
Compact Disc Player
External Power Amp
Video Player 2
Video Player 1
Tuner
Connecting Other Components
1. Make sure your amplifier and other compo-
nents are turned off.
Continue this process to include additional
components (if compatible).
IMPORTANT: When connecting two pairs of
speakers, determine the impedance of each pair
by looking on the back of the speakers, in your
owner's manual, or by contacting your dealer or
manufacturer.
Connecting Speakers
1. For best performance, use high quality
speaker cables. However, ordinary copper wire
can be used if the gauge meets the following
requirements:
2. Connect each component's Output/Play jacks
to the corresponding Input jacks on the back
of your amplifier and, if available, the compo-
nent’s Input/Record jacks to the Output jacks
of the HK 970. Use the white, black or gray
plugs to connect Left channel jacks; use the
red plugs for Right channel jacks.
You can listen to two pairs of speakers at
the same time ONLY if the impedance of
EACH speaker is NOT LESS THAN 8 Ohms.
Wire
Min.
Length
Diameter
1 mm
1.25 mm
1.6 mm
2-2.5 mm
WARNING: Do not play sets of speakers
simultaneously except as recommended above.
Amplifier may overheat.
Up to 2.5 meter
Up to 4 meter
Up to 6 meter
Above 6 meter
3. A record player with MM cartridge must be
connected to the Phono Input jacks and a
separate ground wire to the ground terminal
screw above.
AC Power
Plug the cord into a 230 VAC wall socket.
2. Avoid rolling excess wire with or near signal
interconnects.
Wired Remote Control
Power indicator will light up to indicate power
ON. To completely disconnect the power input,
the main plug must be disconnected from the
mains.
To control your amplifier with an external
infrared remote sensor, connect the wire from
the remote sensor to the REMOTE IN jack on the
back panel. Or, if another stereo component has
a built-in infrared remote sensor and a Remote
Output jack, it may be possible to connect this
jack to the REMOTE IN jack of your amplifier. All
Harman Kardon products with »Remote In« and
»Remote Out« jacks are compatible with one
another, except for the Citation 22, 24 and 25.
Other manufacturers' remote sensors and com-
ponents may not be compatible, but it will not
hurt to experiment. A second wire may be used
to connect your amplifier's REMOTE OUT jack to
the Remote Input of another stereo component.
External Power Amplifiers
For applications where higher power is desired,
connect the Pre-Out Jacks to the Main In Jacks
of an external power amplifier. The level of the
output can be adjusted between -3 and +3 dB
with an internal button. To adjust the level, gen-
tly insert a small screwdriver into the button and
turn clockwise to increase or counter-clockwise
to decrease the output level.
4 CONNECTIONS
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Controls and Functions
9
!
)
6
1
2
7
8
3
4
5
1
Power Indicator: This LED will illuminate in
3
Speaker 1/2 Selectors: Press to select
8
Headphone Jack: Plug in headphones if
amber when the unit is in the Standby mode to
signal that the unit is ready to be turned on.
When the unit is in operation, the indicator will
turn blue.
speaker pair 1 or 2, or both, or neither (head-
phone output only).
desired. With both ”Speaker 1” and ”2” selec-
tors in the Off position, output is supplied only
to headphones.
4
Input Source Selector: Select desired
input source for listening by press-ing the ”Input
Source” button repeatedly (on the left will select
downwards, right upwards) until the display for
the desired source is illuminated.
9
Volume Control: Turn to raise or lower out-
2
System Power Control: Press this button
put volume.
to turn on the HK 970; press it again to turn the
unit off (to Standby). Note that the Power Indi-
)
Main Information Display: This display
delivers messages and status indications to help
you operate the receiver.
cator
1
next to the switch will turn blue when
5
Record Source Selector: Select desired
the unit is on.
source for recording to device connected to the
rear panel Tape and CDR Out sockets by pressing
the ”Record Source” button repeatedly until the
display for the desired source is illuminated.
!
Remote Sensor Window: The sensor
behind this window receives infrared signals
from the remote control. Aim the remote at this
area and do not block or cover it unless an
external remote sensor is installed.
6
Source Direct: Press to bypass tone control
circuitry.
7
Mode Button: Press this button to make
changes to the bass, treble and balance settings.
CONTROLS AND FUNCTIONS 5
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Remote Control
Independent Remote Control
Important Notes:
Operating Conditions
The system remote of the HK 970 can control the
amplifier and compatible Tuners, CD Players and
CD Recorders. The remote In jack of units without
an integrated IR receiver must be connected to
the amplifier's remote control output jack so that
the system remote control can operate them.
• To remote control a tuner, CD Recorder or CD
Player, the appropriate input (”TUNER”,
”CDR” or ”CD”) must have been selected
with the source buttons of the remote control
(selecting on the front panel is not sufficient).
• Note that DVD players or tape decks cannot
be controlled by the remote.
• To control a compatible CD Recorder ”CDR”
must be selected as input and the drive to be
controlled (CDP or CDR) must be selected
appropriately with the ”CDP SELECT” or ”CDR
SELECT” buttons.
The control unit operates effectively within a
distance of 7 meters and an angle of 30° from
the amplifier. Using the control near fluorescent
lights may shorten this range, as will any dust or
dirt that accumulates on the front of the remote
control or the remote sensor area of the
amplifier. Also avoid blocking the line of sight
between amplifier and remote.
The Function Table below will show all functions
of the HK 970 and external devices that can be
controlled by the HK 970 remote.
The control unit is powered by two AA batteries,
included with your amplifier. When you replace
weak batteries, replace both at the same time.
When the remote is to be unused for an
extended period, remove the batteries to prevent
damage from corrosion.
Remote button functions
Button
ON
HK 970
CD Player
Tuner
Power On
-
-
OFF
Power Off
-
-
Tuner
Phono
TV
Select Tuner
-
-
Select Phono
-
-
Select TV
-
-
Tape
Select Tape
-
-
Aux
Select Aux
-
-
CD
Select CD
-
-
Volume +
CDR
Volume Up
-
-
Select CDR
-
-
10+
-
Current Track +10
-
Mode
Folder +
10-
Select Mode
-
-
-
Next Folder
-
-
Current Track -10
-
Volume -
Folder -
Previous JH
Volume Down
-
-
-
Previous Folder
-
-
Skip Previous
-
I
Play/Pause
-
Play/Pause
-
Next IK
Search HH
A Stop
-
Skip Next
-
-
Fast Reverse
-
-
Stop
-
Search II
Open/Close
Scroll +
-
Fast Forward
-
-
Open/Close
-
Tuning Up
-
-
-
Repeat
-
Repeat Play
Random
Scroll -
-
Random Play
-
-
-
Tuning Down
Preset Select
Auto Tune
FM Mode Select
RDS Display Select
-
0 ~ 9 (Numeric Keys)
Auto
-
Track Select
-
-
-
-
-
-
-
FM Mode
RDS
-
-
Mute
Mute Sound
Band
-
-
Band Select
Tune Mode Select
Select
6 REMOTE CONTROL
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Operating Instructions
6. Adjust Bass, Treble and Balance controls as
desired (the Source Direct function must be
turned off). To adjust the bass level, press the
Mode Button twice so that the Main Informa-
tion Display shows BASS 0dB. By turning
the Volume Button to the right, the bass level
will increase, turning the Volume Button left
will decrease the bass level.
sound performance. Press again to turn the
bypass function off and to make the tone and
balance controls function again.
Listening to your CD player, tape
deck, tuner or other source
1. Turn Volume control to minimum level and
press the flat Power switch to turn on the
amplifier. The power indicator lights blue and
the protection circuitry checks for short circuit
or other problems for a few seconds before
sound output.
Making a recording
You may record any source to tape or to CD-R or
to both simultaneously. You may also connect a
second tape deck to the CDR inputs and outputs
to record from tape to tape (in either direction).
Once the desired bass level has been set, press
the Mode Button to set the requested level for
the treble. The Main Information Display will
show TREBLE 0dB. By turning the Volume
Button to the right, the treble level will increase,
turning the Volume Button left will decrease the
treble level.
2. Press ”Speaker 1” to hear loudspeakers
connected to the rear Speakers 1 terminals.
Press ”Speaker 2” to hear loudspeakers
connected to the rear Speakers 2 terminals.
Press both to hear both speaker pairs at once.
To listen to headphones only, press to turn off
any active speaker pair.
To select the desired source for recording (this
can be a different source than the one being
listened to), press the Record Source Selector up
or down button on the front panel repeatedly
until the indicator for the name of the source to
be recorded is shown in the Main Information
Display.
Once the desired treble level has been set, press
the Mode Button to set the requested level for
the balance. The Main Information Display will
show BALANCE 0. By turning the Volume
Button to the right, the balance will move to the
right speaker, turning the Volume Button left will
move the balance to the left speaker.
3. Select desired source for listening by pressing
the front panel Source up or down repeatedly
until the name of the source is shown in the
Main Information Display or by pressing the
desired Source button on the remote control.
NOTE: The record output signal is taken directly
from the program source and is unaffected by
the Volume, Bass, Treble or Balance controls.
Important Notes:
• The functions ”Source Direct” and ”Record
Source” can be selected on the front panel
only, not from the remote control.
• 3-head cassette decks with monitoring func-
tion can be connected to ”Tape” or ”CDR”
connectors too, but their monitoring function
cannot be used.
4. Begin playing the desired source.
Press the Mode Button again to return the the
normal volume indication.
5. Adjust the Volume control to the desired level.
7. Press ”Source Direct” until the the Main Infor-
mation Display shows DIRECT ON to
bypass the tone control to ensure purest
Troubleshooting
This unit is designed for trouble-free operation; most problems users encounter are due to operating errors. So if you have a problem, first check this list for a
possible solution. If the problem persists, consult your authorized Harman Kardon service center.
If the problem is...
No lights illuminate when power cord is plugged into AC outlet.
Make sure that...
• The unit is plugged into a live outlet.
No sound is heard.
• Speaker switches corresponding to the desired speakers are pressed.
• Correct source button has been pressed.
• Volume is turned up.
• Speaker wires are connected properly.
• Hook-up wires to source component are connected properly.
Sound is not heard from the speaker system on one side.
• The speaker wires and connection wires are connected correctly.
• Set the balance setting to 0
When listening to stereo sound, the left and right sounds are reversed. • The speaker wires are connected correctly.
• The wires between components are connected correctly.
Intermittent or continuous buzzing or hissing.
The remote control and front panel controls don't appear to work.
Humming noise when listening to LP
• The unit is away from fluorescent lights, TV, motors and other electrical appliances.
• Disconnect the AC line cord from the wall socket, wait 5 minutes and then re-connect it.
• Ground wire from record player has been connected to ground terminal on amplifier.
• Cable from record player is away from power cords and speaker cables.
• Record player is not to close to speakers.
• Record player is on stable surface.
• Cable from record player is connected to the Phono jacks.
• The phono cartridge is MM, not MC.
Howl or ringing when listening to LP.
Low sound level when listening to LP.
OPERATING / TROUBLESHOOTING 7
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Specifications
NOMINAL
80 Watts@<0.09%THD
120 Watts@<0.3%THD
Continuous Average Power Per Channel (FTC)
20 Hz – 20 kHz, both channels driven
8 Ohms:
4 Ohms:
Dynamic Power (IHF, 1 kHz Tone Burst)
8 Ohms:
4 Ohms:
2 Ohms:
1 Ohms:
115 Watts
200 Watts
295 Watts
380 Watts
High instantaneous current capability (HCC)
Power Bandwidth @ Half-Rated output, 8Ω
Frequency response @ 1W (+0/-3dB)
80 Amps
<10 Hz - 150 kHz
5 Hz - 150 kHz
>125
Damping factor (20Hz-20k Hz)
Signal-to-noise Ratio (Reference rated power output, A-WTD)
Tuner/CD
Phono (MM):
95 dB
75 dB
Input sensitivity/Impedance
Overload:
Tuner/CD
Phono (MM):
270mV/43k Ohms
4.0mV/47k Ohms
Tuner/CD
Phono (MM):
6V
90 mV
Tone control range, Bass @ 50 Hz/Treble @ 10 kHz
Power supply:
6 dB/ 6 dB
AC 230V, 50 Hz
410 W
Power consumption:
Dimensions (Width x Height x Depth):
Weight:
439 x 110 x 395 mm
10.35 kg
250 Crossways Park Drive, Woodbury, New York 11797
Harman Consumer Group International:
2, Route de Tours, 72500 Château-du-Loir, France
© 2005 Harman Kardon, Incorporated
Part 5100-971500-000
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