Harman Kardon Stereo Amplifier HK 970 User Manual

HK 970 Integrated Amplifier  
OWNER’S MANUAL  
®
Power for the Digital Revolution  
 
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  
 
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  
 
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  
 
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  
 
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  
 
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, 8  
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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