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REMOTE CONTROL

Independent Remote Control
The system remote of the HK670 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.

The Function Table below will show all functions
of the HK670 and external devices that can be
controlled by the HK670 remote.

Important Notes:
• For controlling a tuner (only needed for the

numeric buttons), 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.

Operating Conditions
The control unit operates effectively within a dis-
tance 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 amplifi-
er. Also avoid blocking the line of sight between
amplifier and 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 extend-
ed period, remove the batteries to prevent dam-
age from corrosion.

3

2

1

4

5

6

CDR

OFF

TV

CD

9

8

7

0

AUX

CDR

TUNER

SELECT

RDS

CDP

PHONO

TAPE

TUNER

VOLUME

POWER

HK 670

CD / CDR

Power On/Off

-

-

-

II (Fast Forward)

-

Fast Forward

Fast Forward

-

HH (Fast Reverse)

-

Fast Reverse

Fast Reverse

-

JH (Skip Reverse)

-

Skip Reverse

Skip Reverse

-

IK (Skip Forward)

-

Skip Forward

Skip Forward

-

A (Stop)

-

Stop

Stop

-

I (Play)

-

Play

Play

-

-

Track Select

Track Select

Preset Select

Source Select

-

-

-

Source Select

-

-

-

Source Select

-

-

-

Source Select

-

-

-

Source Select

-

-

-

Source Select

-

-

-

Source Select

-

-

-

-

-

CDP Drive Select 

1)

-

-

-

CDR Drive Select 

1)

-

-

-

-

RDS Display Select

D

-

-

-

Tuning Up

E

-

-

-

Tuning Down

D

Volume Up

-

-

-

E

Volume Down

-

-

-

1)

Only needed with CD Recorders

OPERATING INSTRUCTIONS  

1. Turn Volume control to minimum level and

press the round Power button (above
”Power”) to turn the unit to Standby, the
power indicator below will light orange. Then
press the flat Power switch to turn on the
amplifier. The power indicator lights red for a
few seconds, while the protection circuitry
checks for short circuit or other problems, and
then it lights green.

2. Press “Speaker 1” to hear loudspeakers con-

nected 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.

3. Select desired source for listening by pressing

the front panel Source button repeatedly until
the indicator for the desired source is illumi-
nated or by pressing the desired Source but-
ton on the remote.

4. Begin playing the desired source.

5. Adjust the Volume control to the desired level.

6. Adjust Bass, Treble and Balance controls as

desired (the Source Direct function must be
turned off).

7. Press "Source Direct" until the "Source

Direct" indicator lights up to bypass the tone
control and balance circuitry to ensure purest
sound performance. Press again to turn the
bypass function off and to make the tone and
balance controls function again.

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).

To select the desired source for recording (this
can be a different source than the one being
listened to), press the "Record Source" button
on the front panel repeatedly until the indicator
for the desired record source is illuminated.

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.

TROUBLESHOOTING/SPECIFICATIONS

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.

No lights illuminate when power cord is plugged into AC outlet.

• The unit is plugged into a live outlet.
• The round power button above "Power" on the front panel is pressed in.

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.
• The balance control knob is set to the center.

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 unit is away from fluorescent lights, TV, motors and other electrical appliances.

The remote control and front panel controls don't appear to work.

• Disconnect the AC line cord from the wall socket, wait 5 minutes and then re-connect it.

Humming noise when listening to LP

• 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.

Howl or ringing when listening to LP.

• Record player is not to close to speakers.
• Record player is on stable surface.

Low sound level when listening to LP.

• Cable from record player is connected to the Phono jacks.
• The phono cartridge is MM, not MC.

Continuous Average Power Per Channel (FTC)

8 Ohms:

80 Watts@<0.09%THD

20 Hz – 20 kHz, both channels driven

4 Ohms:

120 Watts@<0.3%THD

Dynamic Power (IHF, 1 kHz Tone Burst)

8 Ohms:

115 Watts

4 Ohms:

200 Watts

2 Ohms:

310 Watts

High instantaneous current capability (HCC)

±75 Amps

Power Bandwidth @ Half-Rated output, 8

Ω

<10 Hz - 150 kHz

Frequency response @ 1W (+0/-3dB)

5 Hz - 150 kHz

Damping factor (20Hz-20k Hz)

>125

Signal-to-noise Ratio (Reference rated power output, A-WTD)

Tuner/CD

95 dB

Phono (MM):

75 dB

Input sensitivity/Impedance

Tuner/CD

270mV/43k Ohms

Phono (MM):

4.0mV/47k Ohms

Overload:

Tuner/CD

6V

Phono (MM):

110 mV

Tone control range, Bass @ 50 Hz/Treble @ 10 kHz

±10 dB/±10 dB

Power supply:

AC 230V, 50/60 Hz

Power consumption:

345 W

Dimensions (Width X Height X Depth):

439 X 110 X 395 mm

Weight:

10.35 kg

KEY Control Board