Harman Kardon HK680 - Connections Guide; Connecting Other Components; Connecting Speakers; AC Power Connection

Connecting Other Components
1. Make sure your amplifier and other
components are turned off.
2. Connect each component's Output
jacks to the corresponding Input jacks
on the back of your amplifier. Use the
white, black or gray plugs to connect
Left channel jacks; use the red plugs
for Right jacks.
For Customers with a Turntable
To connect a turntable, an optional
Phono board must be installed. This
board can be set to MM or MC. With the
Phono board installed, however, you
cannot use the AUX 2 input. If you want
to have the Phono board installed,
consult your authorized Harman Kardon
service center.
Connecting an external power
amplifier
If you want to use your HK680 simply as
a preamplifier and connect it to an
external power amplifier, use the PRE-
OUT connectors in the lower-left corner.
Connect the patch cord from the PRE-
OUT jacks on the HK680 to the jacks on
your external power amplifier. Then
connect your speakers to your external
power amplifier.
Connecting an external
preamplifier
To use the HK680 simply as a power
amplifier, connect the Pre-Out jacks of
the external preamplifier to the MAIN-IN
jacks on the back panel of the HK680.
CONNECTIONS
Then set the “INTEGRATED-
SEPARATE?” switch on the back panel to
the “SEPARATE” position.
Wired Remote Control
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 components may not be compatible,
but it will not hurt to experiment.
A second wire may be used to connect
your amplifiers REMOTE OUT jack to
the Remote Input of another stereo
component. Continue this process to
include additional components (if
compatible).
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:
Wire Length Gauge
Up to 2.5 meter 18 AWG
Upto4meter 16AWG
Upto6meter 14AWG
Over 6 meter 10-12 AWG custom
speaker cable
2. Avoid coiling excess wire with or near
line level hook-up cords.
IMPORTANT: When connecting two
pairs of speakers, determine the
impedance of each pair by looking on
the back of the speakers, or in your
owner’s manual, or by contacting your
dealer or manufacturer. Then refer to the
following chart to see if both sets may be
played simultaneously.
ifimpedance Can both pairs
of the two be played
pairs is: simultaneously?
8Q/8Q YES
8Q/6Q NO
80/4Q NO
6Q/6Q NO
60/40 NO
4Q/40 NO
WARNING: Do not play both sets of
speakers simultaneously except as
recommended above. Amplifier may
overheat.
AC Power
Plug the cord into a wall socket (230V
AC).
NOTE: The power does not shut off
completely by just turning the power off.
So power cord should be removed from
AC outlet when not in use for a
prolonged time.
For Customers in the UK
Your unit is supplied with the flex which will have
either two or three wires, so the following items should
be observed to guarantee safety:
THREE CORE FLEX
WARNING: THIS APPARATUS MUST BE EARTHED.
IMPORTANT. The wires in this mains lead are
coloured in accordance with the following code:
Green-and-yellow : Earth
Blue : Neutral
Brown : Live
As the colours of the wires in the mains lead of this
apparatus may not correspond with the coloured
markings identifying the terminals in your plug,
proceed as follows:
The wire which is coloured green-and-yellow must
be connected to the terminal in the plug which is
marked by the letter E or by the safety earth symbol
= or coloured green or green-and-yellow.
The wire which is coloured blue must be connected
to the terminal which is marked with the letter N or
coloured black.
The wire which is coloured brown must be
connected to the terminal which is marked with the
letter L or coloured red.
TWO CORE FLEX
IMPORTANT. The wires in this mains lead are
coloured in accordance with the following code:
Blue : Neutral
Brown : Live
As the colours of the wires in the mains lead of this
apparatus may not correspond with the coloured
markings identifying the terminals in your plug,
proceed as follows:
The wire which is coloured blue must be connected
to the terminal which is marked with the letter N or
coloured black.
The wire which is coloured brown must be
connecied to the terminal which is marked with the
letter L or coloured red.