Onkyo SKF-4800 Instruction Manual

Speaker System

Before using this unit

Precaution on use

SKF-4800

Instruction Manual

Thank you for your purchase of the Onkyo speaker
system.
Please read this manual thoroughly before using it.
Following the instructions in this manual will
enable you to obtain optimum performance and
listening enjoyment from your new speaker
system.
Please retain this manual for future reference.

• The speaker cabinet is made of wood and is
therefore sensitive to extreme temperatures and
humidity. Avoid placing the speaker systems in
locations subjected to direct sunlight, or in smoky
or in humid places, such as near an air conditioner,
humidifier, bathroom, or kitchen. Doing so may
result in damage to the speaker.

• Place the unit on a rigid, level surface. Placing it
on a slanted surface or weak base not only may
cause the unit to fall, but also results in decreased
sound quality.

• Be sure to turn off your amplifier before
connecting the speaker system. Connecting them
with the amplifier’s power on may result in
damage to the amplifier or the speaker system.

• Keep water or other liquids away from the unit. If
water is spilled into the unit, not only the unit but
also the speakers themselves may be damaged.

• This speaker system can handle the specified
input power when it is used for ordinary music
reproduction. If the following abnormal signals
are fed to the speaker, however, an overcurrent
may flow in the internal circuits, causing burning
or breakage of the wires even if the input power is
below the specified rating.

1. Noise produced when FM station is not tuned in

2. Sound produced when fast-forwarding cassette

tape deck

3. High-frequency sound generated by an

oscillator, an electronic musical instrument, etc.

4. Oscillating amplifier signals

5. Special test signals produced by audio checking

CD, etc.

6. Sound produced when connecting or

disconnecting audio connection cables (Always
turn off the amplifier’s power before connecting
or disconnecting cables.)

7. Howling when a microphone is used

• Do not place magnetic objects such as
screwdrivers and iron parts near the tweeter since
they use speakers with strong magnets. Otherwise,
the objects may be attracted, causing injury or
damaging the diaphragm.

E

n

• The two speakers are identical, so it doesn’t matter

Connections

L

R

SURROUND BACK

SPEAKER

SURROUND
SPEAKERS

FRONT

SPEAKERS A

CENTER

SPEAKER

+–

15 mm

+–+–

1. Strip the insulation of speaker cables,
and twist the core wires tightly.

2. Loosen the terminal screw and insert
the wire into the hole (until the core
wires are inserted fully).

3. Fasten the terminal screw.

SKF-4800
Front right speaker

SKF-4800
Front left speaker

SKC-4800
Center speaker

AV amplifier

SKR-4800
Surround right
speaker

SKR-4800
Surround left
speaker

Red line

Placement

which one you use on the left or right.

• Turn the sound volume to the minimum and
disconnect the power cord from the amplifier before
connecting the speaker cables.

• The nominal impedance of this speaker system is
6 Ω. Use only amplifiers capable of handling this
impedance.

• Use the supplied speaker cables to connect between
speaker’s input terminals and the amplifier’s speaker
terminals as illustrated on the below

• Use the red line wires to connect the positive (+)
terminals.

• Connect the speaker cables
securely to the terminals, with
the core wires twisted properly.
In this case, make sure that the
core wires do not touch each
other. Note that a short circuit in
core wires may result in damage
to the amplifier.

Connecting to AV amplifier

+– +–

Before turning on the amplifier’s power switch:

• Make sure that the positive (+) and negative (–)
speaker cables do not contact each other. Otherwise, a
short-circuit may occur, causing damage to the
amplifier.

• Be sure to connect the speaker cables with correct
polarity (connect the speaker’s positive (+) and
negative (–) binding posts with the amplifier’s
corresponding speaker terminals). Reversed polarity
results in impaired bass-range reproduction, causing
mislocalization of the sound image. Also, be sure to
connect the Right and Left speakers with the
amplifier’s corresponding speaker terminals.

• Pull lightly on the speaker cables to ensure that they
are connected firmly.

The sound quality a speaker system reproduces varies
greatly depending on the construction and area of the
room where it is installed, as well as the location and
size of the furniture. For better-quality sound, observe
the following precautions.

• Avoid placing the speaker system on an elevated
object such as on concrete blocks. Instead, place it on
a rigid floor surface with minimal vibration. Also
note that high-quality bass cannot be obtained if the
speaker system is unstably positioned. Generally
speaking, placing the speaker system on several
small-diameter supports results in better bass than
placing it directly on the installation surface.
Moreover, if you feel the bass reproduced by the
system is too weak, move the speaker system closer
to the wall behind it. You can thus control the
strength of the reproduced bass by the position of the
speakers.

• In many rooms, the furniture and wall affect the
reproduced sound quality. For stereo sound
reproduction, placing the Right and Left speakers in
the same condition produces the best results. If they
are placed in extremely different conditions, the
Right- and Left-channel balance will be adversely
affected.

• The ideal placement of the speaker system is as
follows: Imagine an equilateral triangle and position
the Right and Left speakers on both ends of the base.
The ideal listening position is at or slightly to the rear
of the triangle apex.

• Glazed doors or surrounding walls in front of the
speaker system may cause the resonance of specific
frequency ranges due to reflected

sound. To eliminate
this resonance, place some sound-absorbing material
such as a thick curtain in front of the doors or walls.

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