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Cat. No.
40-4075
PRO SWS-250 Multimedia Amplified Speaker System
Your OPTIMUS PR O SWS-250 Multimedia Amplified Speaker S ystem w ith
subwoofer and satellite speakers is
designed to enhance your computer
multimedia system, or transform your
portable CD player, or personal cassette player into a complete music
system. This amplified speaker system is compatible with any audio
source with a
1
/8-inch stereo head-
phone or LINE OUT jack.
The system’s 5-inch subwoofer and 3-
inch satellite speakers produce excellent stereo and powerfu l ba ss sounds.
You can use the sound output from
your computer and CD or cassette
player at the same time, and you can
connect a microphone to the system
so you can use it as a PA or Karaoke
system.
SPEAKER PLACEMENT
Speaker location and position are vital
for the best sound performance.
Satellite Speakers
For the best stereo image, the distance between the satellite speakers
should be about the same as the distance from the main listening area to a
point halfway between the speakers.
(illus)
Warnin
: To prevent fire or shock
hazard, do not expose this speaker
system to rain or moist ure.
CAUTION
RISK OF ELECTRIC SHOCK.
DO NOT OPEN.
CAUTION
ELECTRIC SHOCK, DO NOT REMOVE
COVER OR BACK. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING
TO QUALIFIED PERSONNEL.
: TO REDUCE THE RISK OF
Opti mus is a registered tradem ark used by Tandy Corporation.
RadioShack is a trademark used by Tandy Corporation.
!
© 1996 Tandy Corporation.
All Rights Reserved.
This symbol is intended to alert you
to the p r es en c e o f un in su lated dangerous voltage within the speaker
syste m ’s en cl osure th at might b e o f
sufficie nt mag nitude to constitu te a
risk of el ectric sho ck. Do not open
the speak er system’s case.
This symbol is intended to inform
you that important operating and
!
maintenance instructions are included in the literature accompanying this speaker syst em.
40-407 5.fm Page 2 Wednesday, Augu st 11, 1999 10 :33 AM
If you place the satellite speakers to o
far apart, a soun d “hole” could occur
and you might not get the proper stereo image in the l istening area. Compensate for this by angling the
speakers slightly in toward the listening area.
If you place the satellite speakers to o
close together, you could cancel out
the stereo image and the sound might
seem to be monaural. Compensate for
this by angling the speakers slightly
away from the listening area.
Subwoofer
Where and how you position your subwoofer greatly affects its bass response.
Although low frequencies are non-directional, factors such as room acous tics, standing waves, resonance, and
absorption strongly affect your subwoofer’s performance. For maximum
bass output, place your subwoo fer in
a corner. To reduce its outpu t, mov e it
away from corners and back walls.
Even slightly moving the subwoofer
can have a major effect on bass response.
Adjusting the subwoofer’s sound level
in relation to the satellite speakers’
volume affects your speaker system’s
overall sound. We recommend you
test the subwoofer in different locations to get the best ba lance between
your satellite speakers and the subwoofer.
We also recommend you place the
subwoofer at least 2 -3 feet away from
your monitor or computer so the subwoofer’s magnet does not distort the
colors on your monitor picture or
erase your disks.
CONNECTING THE
SYSTEM
You can connect up t o three optional
input sources to the syste m:
• A computer ’s sound card
• A portable or home stereo system
• A microphone
If you connect an input source, you
can also conn ect up to three optional
output devices to the system:
• Satellite speakers
• Headphones
• The microphone input of a computer’s sound card
Connect the system to a standard AC
outlet after you make all other connections.
To the Audio Output of a
Computer ’s Sound Card
You can connect the system to the audio output of a comp uter’s sound card
using the supplied Y-adapter cord.
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(illus)
• If you use the input source’s headphone jack, set t he input source’s
volume control to its middle setting.
Then connect the cable’s other end to
the system’s
Input B
jack on the back
panel.
Connect the Y-adapter c ord’s 1/8-inch
stereo plug to the
1
/8-inch stereo output jack on your computer’s sound
card. Then connect the Y-adapter
cord’s right (red) and left (white)
phono plugs to the system’s
and
L
(white)
Input A
phono jacks.
R
(red)
To th e Audio Output of a
Portable or Home Stereo
System
You can connect the system to a portable stereo source (such as a CD
player or cassette player) using a
shielded audio cable with a
1
/8-inch
stereo plug at each end (such as Cat.
No. 42-2387, not supplied).
(illus)
Note:
If you are not connecting the
system to a computer sound card, you
can use the supplied Y-adapter cord
between the portable audio source’s
LINE OUT or headphone jack and the
system’s
R
and L
Input A
phono jacks.
(illus)
Or, using a shielded audio cable with
left and right phono plugs at each end
(such as Cat. No. 42-2356, not supplied), you can connect the system
between your home audio source’s
right and left AUDIO OUT jacks and
the system’s
jacks.
R
and L
Input A
phono
Connect one end of the cable to the
input source’s
1
/8-inch stereo LINE
OUT or headphone jack.
• If you use the input source’s LINE
OUT jack, the source’s volume
control has no effect.
(illus)
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To a Microphone
You can connect a microphone (not
supplied) directly to the
MIC
jack on
the front of the system.
(illus)
Notes:
• The microphone signal is routed
MIC
from the
directly to the
back of the system.
• For this connection to work, you
must also connect a shielded
audio cable with a
plug at each end (such as Cat.
No. 42-2387, not supplied)
between the
the back of the system and the
MIC input jack on your computer’s
sound card (see “To the Microphone Input of a Computer’s
Sound Card”).
jack on the front
MIC
jack on the
1
/8-inch stereo
MIC
output jack on
To Satellite Speakers
(illus)
Connect the left satellite speaker’s
wires to the system’s
SPEAKER L
terminal (white to + and
SATELLITE
black to –).
Connect the right satellite speaker’s
wires to the system’s
SPEAKER R
terminal (white to + and
SATELLITE
black to –).
Note:
For the best overall performance, be sure you connect the satellite speaker wires according to the
correct polarity (+ and –).
T o Headphones
For private listening, you can connect
a pair of stereo headphones with a
inch plug (not supplied) to the
PHONES
jack on the front of the sys-
tem.
1
/8-
4
(illus)
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Notes:
• When you connect headphones,
the system automatically disconnects the subwoofer and satellite
speakers.
• Your local RadioShack store carries a wide selection of stereo
headphones.
Important Note: To protect your hearing, follow these guidel ines when you
use headphones.
• Set the system’s volume to the
lowest setting before you begin
listening. After you begin listening,
adjust the volume to a comfortable
level.
• Do not listen at extremely high
volume levels. Extended highvolume listening can lead to permanent hearing loss.
• Once you set the volume, do not
increase it. Over time, your ears
adapt to the volume level, so a
volume level that does not cause
discomfort might still damage your
hearing.
having to access the back of your
computer.
(illus)
Connect one end of the cable to the
MIC input jack on your computer’s
sound card. Then connect the other
end of the cable to the
on the back of the system.
MIC
output jack
To Standard AC
Plug the power cord into a standard
AC outlet.
To the Microphone Input of a
Computer ’s Sound Card
You can connect the system to the microphone input of a compu ter’s sound
card using a shielded audio cable with
1
a
/8-inch stereo plug at each end
(such as Cat. No. 42-2387, not supplied). This makes it easy to conn ect
or disconnect a microphone without
(illus)
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OPERATION
Connect a microphone to the
MIC
jack,
or turn on the con nected audi o s ource
and adjust its volume level if necessary, then follow these steps to operate the system.
1. Turn on the system’s power by
rotating
VOLUME OFF/MAX
clockwise until it clicks, then set it to a
comfortable listening level. The
power LED lights.
2. Rotate
BASS MIN/MAX
to select
the desired low or high frequency
sound.
3. Adjust
BALANCE LEFT/RIGHT
to
get the proper stereo image.
Note:
The system’s
PUT B
jacks operate at the same time.
INPUT A
and
IN-
If you connect stereo audio source s to
both input jacks, you can mix the
sound by adjusting the volume controls of the corresponding audio sources.
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CARE AND MAINTENANCE
Your Optimus PRO SWS-250 Multimedia Amplified Speaker System is an example
of superior design and craftsmanship. The following suggestions will help you care
for the speaker system so you can enjoy it for years.
Keep the speakers dry. If they get wet, wipe them dry immediately. Liquids might contain minerals that can corrode the electronic circuits.
Use and store the speakers only in normal tem perature environ ments.
Temperature extremes can shorten the life of electronic dev ices and
distort or melt plastic parts.
Handle the speakers gent ly and carefully. Dropping t hem can damage
the circuit boards and can cause the speakers to work improperly.
Keep the speakers away from dus t and dirt, which can cause premature wear of parts.
Wipe the speakers with a damp cloth occasionally to keep them looking
CLEANER
new. Do not use harsh chemicals, cleaning solvents, or strong detergents to clean the speakers.
Modifying or tampering with your speaker system’s internal components can cause
a malfunction and mig ht invalidate its warranty and void your FCC au thorization to
operate it. If your speaker syst em is not operating as i t should, take it t o your local
RadioShack store for assistance.
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SPECIFICATIONS
Subwoofer Satellite Speaker
Speaker Size 5-Inch 3-Inch
Output power/THD 10% 15 W 5 W
Impedance 4 ohm 4 ohm
Frequency Response 50–350 Hz 300–20,000 Hz
1
Dimensions (HWD) 14
SPL/1m/1w.......................................................................................................90 dB
Input Sensitivity .............................................................................................350 mV
Output Level (in W)............................................................................ 2v (1w, 4 ohm)
Power Supply ................................................................................... AC 120V 60Hz
System Weight....................................................................................26.5 lb (12 kg)
/8 ¥ 67/8 ¥ 911/16 in 61/8 ¥ 45/16 ¥ 615/16 in
(358 ¥ 175 ¥ 246 m m) (156 ¥ 1 10 ¥ 176 mm)
Specifications are typical; in dividual units might vary. Specifications are subject to
change and improve without notice.
RadioShack Limited Warranty
This pr oduct is w arranted agains t defects for 90 days from date of purc hase fr om RadioShack company-owned stores and authorized RadioShack franchisees and dealers. Within this period, we will
repair it without charge for parts and labor. Simply
purchase date to any RadioShack store. Warranty does not cover transportation costs. Nor does it
cover a product subjected to mi suse or accidental damage.
EXCEPT AS PROVIDE D HEREIN, Rad ioShack MAKES NO EXPRESS WARRANT IES AND ANY
IMPLIED WARRANTIES ARE LIMITED IN DURATION TO THE DURATION OF THE WRITTEN
LIMITED WARRANTIES CONTAINED HEREIN. Some s tates do not permit limitation or exclusion
of implied warranties; therefore, the aforesaid limitation(s) or exclusion(s) may not apply to the purchaser.
This warranty gives you specific legal rights and you may also have other rights which vary from state to state.
bring your R adio Shack sa les slip
We Se rvi ce What We Sell
as proof of
10/95
RadioShack
A Division of Tandy Corporation
Fort Worth, Texas 76102
6A6 Printed in Korea
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