Onkyo Speaker SKW 205 User Manual

SKW-205  
English  
SKW-205  
POWERED SUBWOOFER  
POWERED SUBWOOFER  
Instruction manual  
SKW-205  
SKW-205  
Thank you  
for your purchase of the Onkyo powered subwoofer.  
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  
powered subwoofer.  
Please retain this manual for future reference.  
 
Precautions  
1. Warranty card  
You can find the serial number on the rear panel of this  
unit. In case of warranty claim, please report this number.  
2. Recording Copyright  
Recording of copyrighted material for other than  
personal use is illegal without permission of the  
copyright holder.  
3. AC Fuse  
The fuse is located inside the chassis and is not user-  
servicable.  
If power does not come on, contact your Onkyo  
authorized service station.  
4. Care  
From time to time you should wipe off the front and  
rear panels and the cabinet with a soft cloth. For  
heavier dirt, dampen a soft cloth in a weak solution of  
mild detergent and water, wring it out dry, and wipe off  
the dirt. Following this, dry immediately with a clean  
cloth. Do not use rough material, thinners, alcohol or  
other chemical solvents or cloths since these may  
damage the finish or remove the panel lettering.  
5. Power  
WARNING  
BEFORE PLUGGING IN THE UNIT FOR THE FIRST  
TIME, READ THE FOLLOWING SECTION  
CAREFULLY.  
• The voltage of the available power supply differs  
according to country or region. Be sure that the  
power supply voltage of the area where this unit will  
be used meets the required voltage (e.g., AC230V  
50Hz or AC120V 60Hz) written on the rear panel.  
Models Equipped with a Voltage Selector  
Worldwide models are equipped with a voltage  
selector to conform to local power supplies. Be sure  
to set this switch to match the voltage of the power  
supply in your area before plugging in the unit.  
Setting the voltage selector  
SKW-205  
220-230V  
VOLTAGE  
SELECTOR  
120V  
220-230V  
120V  
VOLTAGE  
SELECTOR  
Setting the voltage selector  
1. Determine the proper voltage for your  
area: 220-230V or 120V.  
2. If the preset voltage is not proper for  
your area, insert a screwdriver into the  
groove in the switch. Slide the switch  
all the way to the lower (120V) or to  
the upper (220-230V) whichever is  
proper.  
3
 
Features  
This subwoofer system is equipped with a  
built-in amplifier solely for the reproduction of  
the superbass range.  
With the built-in left-right mixing circuit and  
cut-off filter, you can just connect the unit to  
your existing system powerful bass  
reproduction.  
Control positions and names  
Front panel  
Rear panel  
A
B
SKW-205  
LINE  
INPUT  
SPEAKER LEVEL  
AUTO STANDBY  
_
_
POWERED SUBWOOFER  
+
R
L
L
+
+
SKW-205  
INPUT  
FROM  
AMP/RECEIVER  
L
(MONO)  
OFF  
ON  
OUTPUT  
R
TO SPEAKERS  
SKW-205  
_
_
+
R
POWER  
1
SKW-205  
C D  
LISTENING MODE  
MOVIE  
2
3
4
MUSIC  
OUTPUT LEVEL  
MIN  
MAX  
FREQUENCY  
50Hz  
200Hz  
To AC outlet  
A Speaker-level input terminals  
(INPUT FROM AMP/RECEIVER)  
Connect these input terminals to the speaker output  
terminals of your amplifier or receiver.  
1
2
Power switch (POWER) and indicator  
Pressing this button turns the power on (the indicator  
lights). Pressing the button again turns the power off  
(the indicator goes out).  
B Speaker-level output terminals  
(OUTPUT TO SPEAKERS)  
The speaker-level signal to the front speakers is output  
from these terminals.  
Red:  
Unit is in standby mode  
Green: Unit is in operation  
C Low-level input jacks (LINE INPUT)  
Connect these jacks to the LINE OUT jacks of the  
amplifier etc.  
Mode selector switch (LISTENING MODE)  
Selecting the MOVIE or MUSIC position provides the  
optimal frequency characteristics for reproducing  
movie soundtracks or music, respectively. Of course,  
you can enjoy movie soundtracks and music in either  
listening mode.  
D Auto standby switch (AUTO STANDBY)  
This switch is used to turn on and off the auto standby  
function.  
ON: This activates the auto standby function.  
If a constant level signal is not received from the  
amplifier (or receiver) over a period of a few minutes,  
the SKW-205 automatically enters the standby state. If  
a constant level signal is later received from the  
amplifier (or receiver), the power is automatically  
turned back on.  
3
4
Output level adjusting knob (OUTPUT LEVEL)  
Use this knob to adjust the output level of the  
subwoofer.  
Frequency adjusting knob (FREQUENCY)  
Use this knob to select the high-frequency range at  
which you wish to cut off the signal to the subwoofer.  
You can select any frequency between 50 Hz and 200  
Hz depending on the characteristics of the speaker  
system being used with the SKW-205.  
OFF: Deactivates the auto standby function.  
Note:  
• The auto standby function operates on the existence  
or absence of a constant level input signal. If the  
auto standby function does not operate properly, try  
slightly increasing (or decreasing) the output level of  
the amplifier or receiver. (Note that output levels of  
some amplifiers and receivers cannot be adjusted.  
For more details regarding your components, refer to  
the instruction manual supplied with them.)  
• If noise from peripheral components causes the  
incorrect operation of the auto standby function, or if  
outputting low volumes (i.e., during the nighttime)  
causes the auto standby function to activate, turn off  
the auto standby function.  
• The auto standby function only operates while the  
power switch for the SKW-205 is turned on.  
4
 
Connections  
For safety, be sure to turn off the power of this unit and all other system components before connecting or disconnecting  
any components.  
When used in combination with an AV amplifier  
When using the SKW-205 in conjunction with AV amplifiers and receivers with surround capability, be sure to connect the  
SKW-205 to the subwoofer preout terminal (SUBWOOFER PREOUT) using the supplied pin cable. If connected using speaker  
cable, depending on the amplifier or receiver settings, the bass signals may be cut out resulting in decreased fidelity in the  
lower bass sounds.  
For more details regarding proper connecting procedures, refer to the instruction manual supplied with your amplifier or  
receiver.  
Connection with amplifiers special subwoofer jack  
Connection with a preamplifier  
Amplifier with subwoofer terminal  
Preamplifier  
Output terminals  
L
To power amplifier  
R
(Not supplied)  
(Supplied)  
LINE  
INPUT  
SPEAKER LEVEL  
AUTO STANDBY  
LINE  
INPU
SPEAKER LEVEL  
AUTO STANDBY  
_
_
+
R
L
+
_
_
+
R
L
+
INPUT  
FROM  
INPUT  
FROM  
AMP/RECEIVER  
AMP/RECEIVER  
L
(MONO)  
L
(MONO)  
FF  
ON  
OFF  
ON  
OUTPUT  
R
TO SPEAKERS  
OUTPUT  
R
TO SPEAKERS  
_
_
+
R
L
+
_
_
+
R
L
+
SKW-205  
SKW-205  
Note:  
Note:  
If your receiver (amplifier) is equipped with a monaural  
subwoofer jack, connect it to the SKW-205 Right or Left  
low-level (LINE INPUT) jack.  
With an ordinary preamplifier having two output chan-  
nels, connect both the Right and Left jacks.  
Connection to receiver's (amplifier's) speaker terminals  
1. Using the supplied speaker cables and speaker cables  
that came with your speakers, connect the SKW-205  
speaker-level input (INPUT FROM AMP/ RECEIVER)  
terminals and the amplifier’s speaker terminals.  
2. Connect the Right and Left speakers to the SKW-205  
speaker-level output (OUTPUT TO SPEAKERS)  
terminals.  
Receiver  
(Amplifier)  
Speaker (R)  
Speaker (L)  
Speaker terminals  
_
_
+
R
L
+
Note:  
SKW-205  
SPEAKER LEVEL  
• When connecting the speaker cables, be sure not to  
mistake the (+) and (-) and the L (left) and R (left). If  
the speaker cables are connecting incorrectly, there  
will be a loss of fidelity in the bass sound ranges.  
• The speakers connected to the SKW-205 speaker-  
level output (OUTPUT TO SPEAKERS) terminals must  
have an impedance equal to or greater than the rating  
indicated on the amplifier connected to the speaker-  
level input (INPUT FROM AMP/ RECEIVER) terminals.  
Otherwise, amplifier damage may occur.  
_
_
+
R
L
L
+
+
INPUT  
FROM  
AMP/RECEIVER  
OUTPUT  
TO SPEAKERS  
_
_
+
R
Connecting the speaker cables  
1. Press the lever of the speaker output terminal, fully  
insert the twisted core wires into the terminal hole, and  
then release the lever.  
2. Pull the speaker cable lightly to ensure that it is  
connected firmly.  
Note:  
• When you have connected the speaker cables, make  
sure that the core wires are not in contact with other  
terminals or metallic parts of the unit.  
• Do not use BTL (Balanced Transformer-Less) type  
amplifiers. Using a BTL amplifier may cause damage  
to both the amplifier and the subwoofer. Ordinary  
amplifiers are not BTL amplifiers. For details, see the  
amplifier’s instruction manual.  
5
 
Subwoofer effects  
Adding a subwoofer to your speaker system expands the bandwidth of reproduced bass-range sound. If the subwoofer’s  
reproduction bandwidth or sound output level is improperly adjusted, however, the overall performance may be decreased  
as shown in the graphs below.  
When subwoofers reproduction bandwidth is  
correct  
When subwoofers reproduction bandwidth is  
far from speakers bandwidth  
Overall characteristics  
Speaker characteristics  
Curve is sunken  
Subwoofer characteristics  
When subwoofers output level is incorrect  
When subwoofers reproduction bandwidth is  
close to speakers bandwidth  
Output level is too high  
Curve is raised  
Output level is too low  
Adjustments  
Crossover frequency and output level  
The placement of the SKW-205 can greatly affect the  
sound that is produced. Under normal circumstances,  
placement in the corner of the room provides the best  
results.  
• Adjust the SKW-205 output level and the crossover fre-  
quency properly for your listening room and connected  
speakers.  
• When the unit is connected to an amplifier via the speaker-  
level input (INPUT FROM AMP/RECEIVER) terminals,  
setting the OUTPUT LEVEL knob near the center position  
will provide a well-balanced sound level with most speakers.  
• Note that you may possibly set the subwoofer at high output  
levels because superbass-range sound is not so audible as  
sound in other ranges. To obtain well-balanced frequency  
characteristics, set the output level to a slightly lower level  
than seems optimal. (This will also prevent the input of too  
strong signals.)  
Note:  
Be careful not to allow the input of excessive power. Input  
levels that greatly exceed normal situations can damage  
the SKW-205. Also note that switching operations at the  
amplifier can also cause excessive noises that may cause  
damage. When using switches at the amplifier, first lower  
the volume to prevent accidental damage.  
Precaution on use  
• Four slip-proof spacers are provided with the SKW-205. If the  
SKW-205 is to be placed on flooring or other similar surfaces,  
attach these spacers to the bottom surface at the corners. This  
will not only prevent scratching, but also provide a stable  
footing. However, note that depending on the surface, the  
spacers may leave markings.  
• This unit is designed to be used in the upright vertical position  
only. Do not use it in the horizontal or tilted position.  
• If the unit is used near a turntable or CD player, howling or  
skipping of sound may occur. To prevent this, move the unit  
away from the turntable or CD player or otherwise lower the  
unit’s output level.  
Placement  
• The enclosure is made of wood and therefore sensitive to  
extreme temperatures and humidity. Avoid placing the unit in  
locations subjected to direct sunlight or in humid places such as  
near an air conditioner, bathroom or kitchen, as well as in  
locations subjected to soot or steam such as near a kitchen  
table and humidifier. Otherwise, damage may occur.  
• Keep water or other liquids away from the unit. If water is spilled  
into the unit, not only the unit but also the connected receiver  
(amplifier) may be damaged.  
• Place the unit on a level and rigid surface free from vibration.  
6
 
3. Howling when a microphone is used  
• This unit can handle the specified input power when it is used  
for ordinary music reproduction. If the following abnormal  
signals are fed to the unit, 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. Special test signals produced by audio checking CD, etc.  
2. Sound produced when connecting or disconnecting audio  
connection cables  
4. Abnormal sound produced when bass-range signals are  
excessively boosted by using the receiver's (amplifier's)  
tone controls, a graphic equalizer, etc., or when a source  
whose bass range is abnormally boosted is being played  
This state called “rattling” occurs when the signal is beyond  
the driver’s reproduction capacity. Although it is not a sign  
of damage, decrease the speaker output level to prevent  
damage to the driver.  
(Always turn off the amplifier's power before connecting or  
disconnecting cables.)  
Troubleshooting guide  
Symptom  
Cause  
Remedy  
The unit does not turn on.  
• The power plug is not fully inserted.  
• Insert the power plug fully into the power  
outlet.  
No sound output  
• The OUTPUT LEVEL knob is set to  
the MIN level.  
• Pin-connector cable(s) are discon-  
nected at the LINE INPUT jacks.  
• Speaker cables are not properly  
connected to the INPUT FROM  
RECEIVER terminals.  
• Set the OUTPUT LEVEL knob properly.  
• Connect cable(s) to the LINE INPUT jacks.  
• Connect the speaker cables properly.  
• The input signal is so small that the  
unit entered the standby state.  
• Set the AUTO STANDBY switch to OFF.  
• Connect the speaker cables properly.  
Small sound output  
Hum noise  
• Speaker cables are connected to the  
INPUT FROM RECEIVER terminals  
with reversed phase.  
• Playing source does not include  
superbass sound.  
• Play sources with superbass sound.  
• Fully insert the pin-connector.  
• Pin-connector is not inserted com-  
pletely.  
• External leakage flux (induction noise • Separate from the noise source and connect.  
by TV etc.) occurs.  
Specifications  
Type  
Bass-reflex with built-in power  
Speaker  
20-cm woofer  
amplifier  
Power supply  
AC 220-230 V and 120 V  
switchable, 50/60 Hz  
Use  
For superbass-range  
reproduction  
Power consumption  
42 W  
Frequency response  
30-200 Hz  
(at maximum crossover frequency)  
Dimensions (W × H × D)  
235 × 455 × 347 (mm)  
9-1/4" × 17-15/16" × 13-11/16"  
Crossover frequency  
Maximum output power  
Input impedance  
50-200 Hz (variable)  
60 W  
Weight  
Others  
11.2 kg 24.7 lbs  
AUTO STANDBY ON/OFF  
(with CANCELLING Switch)  
MOVIE/MUSIC mode selection  
Magnetic shielding  
4.7 kΩ  
(for speaker-level input terminals)  
12 kΩ  
(for low-level input jacks)  
Sensitivity  
Speaker-Level  
Line  
Specifications and appearance may subject to change  
for improvement without prior notice.  
0.8 V  
30 mV  
7
 
Sales & Product Planning Div. : 2-1, Nisshin-cho, Neyagawa-shi, OSAKA 572-8540, JAPAN  
Tel: 072-831-8111 Fax: 072-833-5222 http://www.onkyo-intl.com  
ONKYO EUROPE ELECTRONICS GmbH  
Liegnitzerstrasse 6, 82194 Groebenzell, GERMANY  
Tel: +49-8142-4401-0 Fax: +49-8142-4401-555 http://www.onkyo.net  
ONKYO CHINA LIMITED  
Units 2102-2107, Metroplaza Tower I, 223 Hing Fong Road, Kwai Chung,  
N.T., HONG KONG Tel: 852-2429-3118 Fax: 852-2428-9039 http://www.onkyochina.com  
HOMEPAGE  
D0004-1  
SN 29342918  
 

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