Contents
Powered Subwoofer
Important Safety Instructions...En-2
Precautions..............................En-3
Supplied Accessories.............En-3
Controls....................................En-4
Connections.............................En-5
Adjustments.............................En-6
Placement ................................En-6
Troubleshooting......................En-7
Specifications..........................En-7
SKW-770
Instruction Manual
Thank you for purchasing an Onkyo powered
subwoofer.
Please read this manual thoroughly before using the
unit.
Following the instructions in this manual will enable
you to obtain optimum performance and listening
enjoyment from your new powered subwoofer.
Please retain this manual for future reference.
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• Subwoofer is designed to be used in the upright vertical
position only. Do not use it in the horizontal or tilted
position.
Precautions
1. Recording Copyright—Unless it’s for personal use
only, recording copyrighted material is illegal without
the permission of the copyright holder.
2. AC Fuse—The AC fuse inside the unit is not user-
serviceable. If you cannot turn on the unit, contact
your Onkyo dealer.
• If the subwoofer is used near a turntable, CD player or
DVD player, howling or slipping of sound may occur.
To prevent this, move it away from the turntable, CD
player or DVD player, otherwise lower the unit’s output
level.
3. Care—Occasionally you should dust the unit all over
with a soft cloth. For stubborn stains, use a soft cloth
dampened with a weak solution of mild detergent and
water. Dry the unit immediately afterwards with a
clean cloth. Don’t use abrasive cloths, thinners,
alcohol, or other chemical solvents, because they may
damage the finish or remove the panel lettering.
4. Power
Connection
With other audio-video components, connect the
subwoofer’s LINE INPUT to the subwoofer pre out jack
of your equipment. Never plug any kind of musical
instrument to the subwoofer.
Supplied Accessories
WARNING
BEFORE PLUGGING IN THE UNIT FOR THE
FIRST TIME, READ THE FOLLOWING SECTION
CAREFULLY.
AC outlet voltages vary from country to country.
Make sure that the voltage in your area meets the
voltage requirements printed on the unit’s rear panel
(e.g., AC 230 V, 50 Hz or AC 120 V, 60 Hz).
• Power cords
(The plug type varies from country to country. From the
two supplied power cords, choose the one whose plug
matches the type of your AC wall outlet.)
The power cord plug is used to disconnect this unit
from the AC power source. Make sure that the plug is
readily operable (easily accessible) at all times.
For models with [POWER] button, or with both
[POWER] and [ON/STANDBY] buttons:
Pressing the [POWER] button to select OFF mode
does not fully disconnect from the mains. If you do
not intend to use the unit for an extended period,
remove the power cord from the AC outlet.
2 m
1.8 m
• Pin connector cable 3 m
• 4 floor pads for the subwoofer
For models with [ON/STANDBY] button only:
Pressing the [ON/STANDBY] button to select
Standby mode does not fully disconnect from the
mains. If you do not intend to use the unit for an
extended period, remove the power cord from the AC
outlet.
*
In catalogs and on packaging, the letter added to the end of the
product name indicates the color of the SKW-770.
Specifications and operation are the same regardless of color.
Using the Floor Pads for Subwoofer
Placement
If the subwoofer is placed
on a hard floor (wood,
vinyl, tile, etc.) and
playback is very loud, the
subwoofer’s feet may
• The subwoofer cabinet is made out of wood and is
therefore sensitive to extreme temperatures and
humidity, do not put it in locations subject to direct
sunlight or in humid places, such as near an air
conditioner, humidifier, bathroom, or kitchen.
• Do not put water or other liquids close to the subwoofer.
If liquid is spilled over the subwoofer, the drive units
may be damaged.
Pad
damage the flooring.
To prevent this, place the supplied pads underneath the
subwoofer’s feet. The pads also provide a stable base for
the subwoofer.
• Subwoofer should only be placed on sturdy, flat surfaces
that are free from vibration. Putting it on uneven or
unstable surfaces, where it may fall and cause damage,
will affect the sound quality.
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Controls
FRONT VIEW
REAR PANEL
b
c
d
a
a Standby/On indicator
b AC INLET
Red: Subwoofer in standby mode
Blue: Subwoofer on
The Auto Standby function will automatically set the
SKW-770 to Standby mode when there is no input
signal, or when the input signal is below a certain
level.
Connects the supplied power cord. From the two
supplied power cords, choose the one whose plug
matches the type of your AC wall outlet.
c OUTPUT LEVEL knob
Use this knob to adjust the volume of the subwoofer.
d LINE INPUT jack
Connect this jack to the SUBWOOFER PREOUT
jacks on the amplifier etc.
Note
• If the Auto Standby function sets the SKW-770 to Standby mode
even when an input signal is present, the input signal level is too
low. In this case, increase the subwoofer output level on the
amplifier or AV receiver connected to the SKW-770.
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Connections
For safety considerations, turn off all other system
components before you connect or disconnect any
component and plug the power cord for the last.
Connecting the Power Cord
Connect the supplied power cord to the subwoofer’s
1
AC INLET.
Using the SKW-770 with an AV
amplifier
When using the SKW-770 in conjunction with an AV
amplifier or receiver that features surround capability,
connect the SKW-770 LINE INPUT to SUBWOOFER
PREOUT jack using the supplied pin connector cable.
To AC wall outlet
SUBWOOFER
PREOUT
Plug the power cord into an AC wall outlet.
2
Note
• Before connecting the power cord, connect all of your
speakers and AV components.
• Turning on the subwoofer may cause a momentary power surge
that might interfere with other electrical equipment on the same
circuit. If this is a problem, plug the subwoofer into a different
branch circuit.
(Supplied)
• Do not use a power cord other than the one supplied with the
subwoofer. The supplied power cord is designed exclusively for
use with the subwoofer and should not be used with any other
equipment.
SKW-770
• Never disconnect the power cord from the subwoofer while the
other end is still plugged into a wall outlet. Doing so may cause
an electric shock. Always disconnect the power cord from the
wall outlet first, and then the subwoofer.
Caution
• With other audio-video components, connect the subwoofer’s
LINE INPUT to the subwoofer pre out jack of your equipment.
Never plug any kind of musical instrument to the subwoofer.
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Adjustments
Placement
To set the level of the subwoofer, use the
OUTPUT LEVEL knob. Set it so that bass
sounds are evenly balanced with the treble
sounds from the other speakers. Because our
ears are less sensitive to very low bass
The placement of the SKW-770 can greatly affect the
sound that is produced. In general, a good bass sound can
be obtained by installing the subwoofer in a front corner,
or at one-third the width of the wall, as shown.
sounds, there’s a temptation to set the level of the
subwoofer too high. As a rule of thumb, set the subwoofer
level to what you think is the optimal level, and then back
it off slightly.
Note
• Be careful not to allow the input of excessive power. Input levels
that greatly exceed normal situations can damage the SKW-770.
Also note that switching operations at the amplifier may
generate excessive noise that may result in damage. When using
switches at the amplifier, first lower the volume to prevent
accidental damage.
Corner
1/3 room
length
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Troubleshooting
Specifications
■ The unit does not turn on
Type
Input sensitivity/impedance
550 mV/20 kΩ
25 Hz to 150 Hz
Rated output power (IEC)
120 watts minimum continuos power,
Bass-Reflex
The power plug is not fully inserted.
➔Insert the power plug fully into the power outlet.
Frequency response
■ No sound is output
The OUTPUT LEVEL knob is set to the MIN level.
➔Set the OUTPUT LEVEL knob properly.
4 ohms, driven at 100 Hz with a maximum
total harmonic distortion of 1 %
Cabinet capacity
Drivers unit
Power supply
Power consumption
Dimensions (W × H × D)
37 L
Pin connector cable is not properly connected to the
LINE INPUT jack.
25 cm Cone woofer
AC 220 - 240 V, 50/60 Hz
137 W
The speaker setting at the amplifier (or receiver) is
incorrect.
➔Check the settings at the amplifier (or receiver).
275 mm × 507 mm × 411 mm
(incl. grille and projection)
The input signal is so small that the unit entered
Standby mode.
➔Slightly increase the output level at the amplifier
(or receiver).
Weight
Accessory
11.6 kg
Power cord (2 pcs.)
Pin connector cable (1 pc.)
Instruction manual (this manual)
Floor pad (4 pcs.)
If the Standby/On indicator lights up (both red and
blue LEDs) several seconds or minutes after the
sound output stopped, this means that the amp
protection circuit has been activated. In this case, set
the OUTPUT LEVEL knob to the center position,
and disconnect the power cord from the AC outlet.
Wait at least 10 seconds, and then reconnect the
power cord. If that doesn’t solve the issue, contact
your Onkyo dealer.
Others
Auto Standby function
Non-magnetic shielding
Specifications and appearance are subject to change
without prior notice.
■ Low sound output
The sound source might not include a superbass
range.
➔Play a sound source that includes a superbass
range.
■ Hum noise
Pin connector plug is not inserted completely.
➔Fully insert the pin connector plug.
External leakage flux (induction noise by TV, etc.)
occurs.
➔Relocate the SKW-770 away from the noise
source and re-connect.
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2-1, Nisshin-cho, Neyagawa-shi, OSAKA 572-8540, JAPAN
Tel: 072-831-8023 Fax: 072-831-8163
18 Park Way, Upper Saddle River, N.J. 07458, U.S.A.
Tel: 800-229-1687, 201-785-2600 Fax: 201-785-2650
Liegnitzerstrasse 6, 82194 Groebenzell, GERMANY
Tel: +49-8142-4401-0 Fax: +49-8142-4208-213
The Coach House 81A High Street, Marlow, Buckinghamshire, SL7 1AB, UK
Tel: +44-(0)1628-473-350 Fax: +44-(0)1628-401-700
Unit 1033, 10/F, Star House, No 3, Salisbury Road, Tsim Sha Tsui Kowloon, Hong Kong.
Tel: 852-2429-3118 Fax: 852-2428-9039
1301, 555 Tower, No.555 West NanJin Road, Jin an, Shanghai,
China 200041, Tel: 86-21-52131366 Fax: 86-21-52130396
Y1203-2
SN 29400910A
(C) Copyright 2012 Onkyo Sound & Vision Corporation Japan. All rights reserved.
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