Harman Kardon HK20 User Manual

MODEL HK20
POWER AMPLIFIER
INSTRUCTION MANUAL
It
is
essential
you
read
this
instruction
booklet
carefully
before
installing
your
high
fidelity
system.
You
have
invested
in
an
extremely
fine
electronic
instrument
into
which
many
excellent
engineering
developments
have
been
incorporated,
and
each
is
important
for
the
proper
operation
of
your
system.
This
booklet
has
been
written
in
simple
non-technical
language
and
if
you
will
take
time
to
read
it
first
before
doing
anything
else,
you
will
find
it
simple
to
obtain
optimum
performance
from
your
Harman-Kardon
Amplifier.
Be
sure
to
keep
this
booklet
available
at
all
times.
It
contains
indispensable
technical
and
service
information.
UNPACKING
After
unpacking
the
HK20,
inspect
it
carefully
for
signs
of
transit
damage.
The
unit
was
subjected
to
many
inspections
and
tests
prior
to
final
packing,
and
it
therefore
should
be
in
perfect
condition.
If
damage
is
visible,
notify
your
dealer
at
once.
If
the
unit
was
shipped
to
you,
notify
the
transportation
company
without
delay.
Check
the
contents
of
the
carton
thoroughly
and
inspect
the
folds
of
the
packing
material
before
discarding
it.
Your
package
should
contain
the
following
items:
1
Model
HK20
Basic
Power
Amplifier.
1
Instruction
Booklet.
1
Warranty
Card.
WARRANTY POLICY
We
urge
you
to
completely
fill
in
your
warranty
card
and
mail
it
to
the
fac-
tory
without
delay
to
protect
your
rights
under
warranty.
The
warranty
cards
-are
carefully
filed
for
reference
and
should
you
require
information
on
the
use
of
this
high
fidelity
unit,
or
repair
service,
we
will
be
able
to
immediately
identify
your
set
and
reply
quickly.
NOTE:
It
is
necessary
to
receive
factory
authorization
before
returning
a
set
for
warranty
repair
either
to
the
factory
or
to
an
authorized
station.
Repairs
are
to
be
returned
on
an
Express
Prepaid
basis.
A
letter
describing
the
exact
diffi-
culty
must
be
enclosed
with
the
unit.

Harman Kardon HK20 Specifications

General

Brand	Harman Kardon
Model	HK20
Category	Amplifier
Language	English

Summary

Instruction Manual and Initial Setup

Unpacking the HK20

Procedure for inspecting the amplifier and its contents after delivery to check for transit damage.

Warranty Policy

Details on how to register the product and the importance of warranty for service identification.

Warranty Terms

Using the HK20 Power Amplifier

Installation Procedure

Steps for setting up and connecting the amplifier, including ventilation and power requirements.

Rear Panel Connections

Diagram and explanation of the amplifier's rear panel input and output terminals.

Connecting Your Speaker

Guide on how to connect speakers based on their impedance (8 or 16 ohms).

Input Connection

Instructions for connecting the HK20 to a preamplifier or converter using shielded cables.

Input Level Control

How to adjust the amplifier's gain for monaural or stereo applications.

Adjustments

Hum Adjust Control

Procedure to minimize hum by adjusting a specific control on the amplifier's chassis.

Output Tube Balance Control

Instructions for adjusting the output tube balance for optimal performance or after tube replacement.

Maintenance and Repairs

Fuse Replacement

Information about the amplifier's fuse, its rating, and correct replacement instructions.

Routine Maintenance Advice

Recommendations for upkeep, including occasional adjustments and yearly tube checking.

Service and Repair Information

Guidance on seeking qualified technicians and obtaining factory authorization for service.

List of Replaceable Parts

A list of common parts with their part numbers, descriptions, and prices.