10
INSTALLATION AND CONNECTIONS
Audio and Speaker Connections
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 send-
ing audio or transient signals to the speakers
that may damage them.
1. Connect the analog output of a CD player to
the
CD
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,
CDR, MD or other audio recorder to the
Tape
Monitor Play
jacks
. Connect the Record/In
jacks on the recorder to the
Tape Monitor
Rec. Out
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, CDR, MD or other line-level audio
device to the
Tape 2 Play
jacks
. If a
recorder is used, connect its Rec/In jacks to the
matching
Tape 2 Record
outputs
.
4. The audio output of any electronics product
with a line-level output, such as a TV set, satel-
lite receiver or DVD, may be connected to the
Aux
jacks
.
5. Connect the outputs of a turntable with a
moving magnet cartridge to the
Phono
inputs
. To insure that the phono playback is noise-
free, connect the ground wire from the tone-arm
to the
Phono Ground
terminal
.
6. Assemble the AM Loop Antenna supplied with
the unit as shown below. Connect it to the
AM
screw terminals
.
7. Connect an FM antenna to the
FM Antenna
connection
. The FM antenna may be an
external roof antenna, an inside powered or wire
lead antenna or a connection from a cable sys-
tem. Note that if the antenna 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.
8. If you wish to use external processing equip-
ment, such as an equalizer, you may connect the
device to the preamp-out and main-in jacks by
removing the
Preamp-Out/Main-In Jumper
Pins
and connecting the
Preamp Out
jacks to the inputs of the external device, and
the outputs of the device to the
Main In
jacks.
Alternatively, you may connect the external
device to the Tape Monitor Loop. Connect the
Tape Monitor Record/Out
jacks
to the
inputs of the external device, and connect the
outputs of the device to the
Tape Monitor
Play/In
jacks
.
Speaker and Output Connections
Regardless of the brand of cable selected, we
recommend that you use a cable constructed of
fine, multistrand copper with an area of min.
2 mm
2
.
Cable with 1.5 mm
2
may be used for short runs
of less than 3 meters. We do not recommend
that you use cables with an area of 0.8 mm
2
or
smaller due to the power loss and degradation
in performance that will occur.
Questions about running cables inside walls
should be referred to an installer or a licensed
electrical contractor who is familiar with applica-
ble 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 “positive” or “red” wire should be
connected to the like terminals 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 Speaker 1 left and right or
Speaker 2 left and 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 configu-
ration. To assure proper phase, and optimal per-
formance, 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,
assure that both speakers are connected with
the same polarity, i.e. speaker wires or terminals
with any marking should be connected to the
red speaker terminals on the HK3370, the others
to the black ones (see connections below).
Connect the speakers using the following steps:
1. Connect the main speakers to the
Speaker 1
terminals
.
2. Connect a second set of speakers, or speakers
that are in a second room location, to the
Speaker 2
terminals
.
3. When an optional, powered subwoofer (not
the aktive Sub of a Sub/Sat-System) is used, con-
nect the outputs of the left and right
Sub-
woofer Out
jacks
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 output jack for the connec-
tion. When a separate passive subwoofer is
used, these connections will be made to the
optional amplifier that powers the subwoofer.
If a Sub/Sat system is used (aktive or passive),
connect the
Speaker 1
terminals
to the
speaker-level inputs on the subwoofer, and then
connect the speaker-level outputs on the sub-
woofer to your main left and right speakers, fol-
lowing the instructions provided with the sub-
woofer.
Installation and Connections
