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9 REMOTE CONTROL FUNCTIONS

ON

OFF

1

2

3

4

7

9

8

0

5

6

TAPE  2

DWN - TUNING - UP

1

2

P. SCAN

MUTE

SLEEP

DIMMER

DIRECT

MEMORY

PRESET

AUTO

CLEAR

PHONO

TAPE MON

AUX

AM

FM

CD

DWN - PRESET - UP

DISC SKIP

FM MODE

Ñ

ø

å

©

˙

˚

¬

µ

π

∫

ç

∂

≠

ƒ

®

√

∑

‹ ‹ Ü

œ

ß  

†

∆

å Main Power On
∫ Main Power Off
ç Source Selectors
∂ Preset Up/Down
≠ Transport Controls
ƒ Disc Skip
© Sleep Button
˙ Dimmer Button

î Tuning

∆ Direct Button
˚ Numeric Keys
¬ Auto Preset
µ Secondary Control Cover
Ñ Clear Button
ø Memory Button
π Master Volume
œ P. Scan Button
® Mute Button
ß FM Mode Button
† Tuning Up/Down
Ü Speaker 1 Selector
√ Speaker 2 Selector
∑ Transmitter Window

10 REMOTE CONTROL FUNCTIONS

å

When the HK 3370 

is in the Standby mode, as indicated by the

3 glowing amber, press 

this button to turn the HK 3370 on.

∫

When the HK 3370 is

turned on, press this button to place it in the
Standby mode. Note that in this condition,
the unit is still connected to AC Power.

ç

Press these buttons

to select an input source for the HK 3370.

∂

When the tuner is in

use, these buttons scroll through the stations
that have been programmed into the HK 3370’s
memory. These buttons also control the track Skip
Up and Down on compatible Harman Kardon
compact disc players/changers.

≠

These buttons are

used to control Play, Play Forward, Play Reverse,
Stop, Pause and Record functions on compatible
Harman Kardon compact disc players/changers
and cassette tape decks.

ƒ

These buttons do not have

any functions when controlling the HK 3370,
but they operate the Disc Skip functions of com-
patible Harman Kardon compact disc changers.

©

Press this button to place

the unit in the Sleep mode. Each press of the
button selects the amount of time that will
remain before the unit will automatically go
into the Standby mode, as shown in the

Û, in the following

order:

˙

Press this button once

to reduce the brightness of the front panel dis-
play to half the normal intensity. Press it again
to turn the front panel display completely off.
When the display is completely off, press the
button to return to normal brightness.

î

Press these buttons to tune up or

down through a selected frequency band.

∆

Press this button to

select a radio station by entering its frequency
using the 

K. (See page 13

for more information.)

˚

These buttons serve as 

a ten-button numeric keypad to enter tuner
preset positions or to tune stations directly.

¬

When the tuner and FM

band have been selected, this button may be
used to automatically program the tuner presets
for all active stations. To start the auto preset
scan, press and hold the button. Note that the
MEMO and PRESET indicators will flash. After
a few seconds, the tuner will start to “look” for
active stations, as shown by increasing frequen-
cy numbers in the Information Display. Release
the button and note that the tuner will briefly
stop at each active station and add a preset
number to the memory. If the FM tuner finds
fewer than 30 FM stations with acceptable sig-
nal strength, the Auto Preset tuning will scan
two more cycles or until the remaining vacant
preset memory spaces have been filled with
those found in the first scan. The scan will stop
when all 30 preset memory spaces have been
filled or when three scans through the band
have been completed.

µ

This slid-

ing cover normally is in the “up” position so
that it hides the secondary controls. To access
these controls, place your thumb on the small
recessed area at the top center of the control,
and gently press the cover down and towards
you.

Ñ

This button is used to clear

preset memory information for the HK 3370’s
tuner. (See page 14 for more information on
tuner presets.)

ø

Press this button to

open a memory position that stores a preset
location for the HK 3370’s tuner. (See page 14
for more information on tuner presets.)

π

Press these buttons to

raise or lower the HK 3370’s volume.

œ

Press this button to

automatically scan through the list of stations
that are programmed into the HK 3370’s tuner
memory. When the button is pressed, each pre-
set station will play for five seconds before the
next station is selected. Press the button again
when the desired station is heard to stop the
preset scan.

®

Press this button to

momentarily silence the HK 3370.

ß

Press this button

when the tuner is in use in the FM band to
switch to monaural reception if the station is
weak and noisy. (See page 13 for more 
information.)

†

When the tuner is in

use, these buttons will tune up or down through
the selected frequency band. A brief (1⁄2 second)
press of the button will manually tune to the
next frequency increment, while pressing and
holding the button for a longer period will auto-
matically tune to the next station with a signal
strong enough for acceptable reception. These
buttons will also control Fast Forward and 
Fast Reverse (or Rewind) for compatible
Harman Kardon compact disc players/changers
and cassette tape decks.

Ü

Press this button

to turn the speakers connected to the 

terminals ‡ on or off.

√

Press this button

to turn the speakers connected to the 

terminals ° on or off.

∑

Point this area of

the remote toward the receiver when using the
remote.

90

min

80

min

70

min

60

min

50

min

40

min

30

min

20

min

10

min

OFF

System Installation
After unpacking the unit, and placing it on a
solid surface capable of supporting its weight,
you will need to make the connections to your
audio and video equipment. These steps need
to be done only when the receiver is first
installed, or when a change is made to the
input source equipment.

Audio Equipment Connections
We recommend that you use high-quality inter-
connect cables when making connections to
source equipment and recorders to preserve the
quality of the signals.

When making connections to audio source
equipment or speakers it is always a good prac-
tice to unplug the unit from the AC wall outlet.
This prevents any possibility of accidentally
sending audio or transient signals to the speak-
ers that may damage them.

1. Connect the analog output of a CD player to
the 

inputs ¶.

NOTE: When the CD player has both fixed and
variable audio outputs, it is best to use the
fixed output unless you find that the input to
the receiver is so low that the sound is noisy, or
so high that the signal is distorted.

2. Connect the Play/Out jacks of a cassette
deck, MD or other audio recorder to the 

jacks ª. Connect the Record/In

jacks on the recorder to the 

jacks ‚ on the HK 3370. When the tape

deck connected to these jacks is a three-head
unit or has off-head playback, it will be possible
to monitor the output of the source being
recorded.

3. Connect the output of a second audio
recorder, VCR or other line-level audio device to
the 

jacks ⁄. If a recorder is

used, connect its Rec/In jacks to the matching
outputs ¤.

4. The output of any electronics product with a
line-level output, such as a TV set, satellite
receiver or DVD, may be connected to the 

jacks •.

5. Connect the outputs of a turntable with a
moving magnet cartridge to the 

inputs

§. To insure that the phono playback is noise-
free, connect the ground wire from the tone
arm to the 

terminal £.

6. Assemble the AM Loop Antenna supplied
with the unit as shown below. Connect it to the

screw terminals ¡.

7. Connect an FM antenna to the 

connection ™. The FM antenna

may be an external roof antenna, an inside
powered or wire lead antenna or a connection
from a cable TV system. Note that if the anten-
na or connection uses 300-ohm twin-lead
cable, you must use the 300-ohm-to-75-ohm
adapter supplied with the unit to make the 
connection.

Speaker and Output Connections
To assure that all the audio signals are carried
to your speakers without loss of clarity or reso-
lution, we suggest that you use high-quality
speaker cable. Many brands of cable are avail-
able, and the choice of cable may be influenced
by the distance between your speakers and this
receiver, the type of speakers you use, personal
preferences and other factors. Your dealer or
installer is a valuable resource to consult in
selecting the proper cable.

Regardless of the brand of cable selected, we
recommend that you use a cable constructed of
fine, multistrand copper with a gauge of 14 or
smaller. Remember that in specifying cable, the
lower the number, the thicker the cable.

Cable with a gauge of 16 may be used for
short runs of less than ten feet. We do not rec-
ommend that you use cables with an AWG
equivalent of 18 or higher due to the power
loss and degradation in performance that will
occur.

Cables that are run inside walls should have
the appropriate markings to indicate listing
with UL, CSA or other appropriate testing
agency standards. Questions about running
cables inside walls should be referred to your
installer or a licensed electrical contractor who
is familiar with the NEC and/or the applicable
local building codes in your area.

When connecting wires to the speakers,
be certain to observe proper polarity.
Remember to connect the “negative” or
“black” wire to the same terminal on the
receiver and the speaker. Similarly, the “posi-
tive” or “red” wire should be connected to the
like terminal on the HK 3370 and speaker.

We also recommend that the length of cable
used to connect speaker pairs be identical. For
example, use the same length piece of cable to
connect the front left and front right or sur-
round left and surround right speakers, even if
the speakers are a different distance from the
HK 3370.

NOTE: While most speaker manufacturers
adhere to an industry convention of using black
terminals for negative and red ones for positive,
some manufacturers may vary from this config-
uration. To assure proper phase, and optimal
performance, consult the identification plate on
your speaker, or the speaker’s manual to verify
polarity. If you do not know the polarity 
of your speaker, ask your dealer for 
advice before proceeding, or consult 
the speaker’s manufacturer.

Connect the speakers using the following steps:

1. Connect the main speakers to the 

terminals ‡.

2. Connect a second set of speakers, or speakers
that are in a second room location, to the

terminals °.

3. When an optional, powered subwoofer is
used, connect the outputs of the 

jacks fl to the line-level inputs of the

subwoofer. When the subwoofer’s amplifier has
stereo inputs, run interconnects from both
jacks. When the subwoofer has a mono input
only, use the bottom jack for the connection.
When a passive subwoofer is used, these con-
nections will be made to the optional amplifier
that powers the subwoofer.

11 INSTALLATION AND CONNECTIONS

12 INSTALLATION AND CONNECTIONS

System and Power Connections
The HK 3370 is designed for flexible use with
external control components and power ampli-
fiers. These connections are easy to make dur-
ing an initial installation, or at a later date
should you choose to upgrade your system.

Remote Control Extension
If the receiver is placed behind a solid or
smoked glass cabinet door, the obstruction may
prevent the remote sensor from receiving com-
mands. In this event, an optional remote sensor
may be used. Connect the output of the remote
sensor to the 

jack ¢.

If other components are also prevented from
receiving remote commands, only one sensor is
needed. They may use this unit’s sensor or a
remote eye by running a connection from the

jack ∞ to the Remote In

jack on Harman Kardon or other compatible
equipment.

External Audio Power Amplifier
Connections
If desired, an optional, external amplifier may
be used in place of the HK 3370’s internal
power amplifier.

To connect an external power amplifier, first
remove the 

›

that connect the 

fi and 

‹ jacks on the rear panel. Keep the

jumpers in a safe place should they be needed
at a later time.

Using high-quality audio interconnect cables,
connect the 

jacks fi to the

input jacks on your power amplifier. Make cer-
tain to match the right output to the right input
and the left output to the left input.

Note that when an external power amplifier is
used, no special adjustments are required. All
volume and other control adjustments are
made using the standard front panel or remote
controls.

AC Power Connections
The 

· receive power

as long as the receiver is turned on. Power to
these outlets is removed when the unit is in the
Standby mode, or when the 

1 is in the “OFF” position.

Speaker Placement
For optimal listening enjoyment, and for sound-
field reproduction that best re-creates the origi-
nal recording, it is good practice to place the
speakers so that they form a triangle with the
speakers at the front of the room, and the pre-
ferred listening spot at the third point of the tri-
angle. The distance between each speaker and
the listener should be identical.

For example, if the speakers are 10 feet from
one another, each of the speakers should opti-
mally be placed so that they are also 10 feet
from the listener. It is also desirable to place
speakers so that their tweeters, or high-
frequency drivers are aimed at ear height 
when you are seated in the listening position.

To optimize the sound field, or to suit your lis-
tening room environment, you may find that
some experimentation is required to find the
correct location. Ideally, pans from left to right
across the front of the room should sound
smooth, and instruments should appear to be
coming from the proper location to where they
would be placed in an orchestra.

The placement of subwoofers should be done
as suggested in the manufacturer’s instructions.
In general, subwoofers often produce best
results when they are placed in the corner of a
room, but optimal placement will vary widely
depending on room size, the subwoofer type
and the placement of rugs and furniture in a
room.

Finally, when all connections are complete, plug
the power cord into a nonswitched 120-volt AC
wall outlet. You’re ready to enjoy the HK 3370!

Right Front

Speaker

Left Front

Speaker