Optimus Speaker System STS 150 User Manual

40-4074.fm Page 1 Wednesday, August 11, 1999 10:28 AM  
Cat. No. 40-4074  
STS 150 Speaker System  
Your Optimus STS 150 Speaker Sys-  
tem has a 2-way acoustic suspension  
design that utilizes an 8-inch specially  
treated cone surrounded by rubber to  
yield excellent low-end response and  
tight, clean bass. A 1-inch mylar  
tweeter diaphragm provides clear and  
natural high-frequency sound repro-  
duction.  
Where and how you position each  
STS-150 speaker has a great effect  
on the overall performance of your  
sound system.  
For the best sound and stereo effect,  
place the speakers so the distance  
between them is about the same as  
the distance between the listening  
area and a point halfway between the  
speakers.  
The speaker cabinet is solid in con-  
struction and is finished in woodgrain  
vinyl. The decorative grille is acousti-  
cally transparent.  
b
a
Note: You need speaker wire (not  
supplied) to connect your speaker.  
a = b  
SPEAKER PLACEMENT  
Cautions:  
If you place the speakers too far apart,  
a sound “hole” could occur and you  
might not get the proper stereo image  
in the listening area. Compensate for  
this by angling the speakers slightly in  
toward the listening area.  
To prevent the cabinet from warp-  
ing or discoloring, do not place the  
speaker where it is exposed to  
direct sunlight or excessive  
humidity.  
• Do not place the speaker where it  
might be knocked over or hit by  
falling objects.  
If you place the speakers too close to-  
gether, you could cancel out the ste-  
reo image and the sound might seem  
to be monaural. Compensate for this  
by angling the speakers slightly away  
from the listening area.  
© 1996 Tandy Corporation.  
All Rights Reserved.  
Optimus is a registered trademark used by Tandy Corporation  
RadioShack is a trademark used by Tandy Corporation.  
 
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4. Press the right speaker’s red  
(positive) terminal tab and insert  
the marked conductor into the  
opening, then release the tab.  
MAINTENANCE  
Your Optimus STS 150 Speaker Sys-  
tem is an example of superior design  
and craftsmanship. The following sug-  
gestions will help you care for the  
speaker so you can enjoy it for years.  
• Keep the speaker dry. If it gets  
wet, wipe it dry immediately. Liq-  
uids contain minerals that can cor-  
rode electronic circuits.  
• Keep the speaker away from dust  
and dirt, which can cause prema-  
ture wear of parts.  
Note: Improper phasing can  
decrease bass sounds. Be sure to  
connect speaker terminals in  
proper phase (+ to + and – to –).  
• Occasionally wipe the cabinet with  
a cloth dampened with furniture  
polish to keep it looking new. Do  
not use harsh chemicals, cleaning  
solvents, or strong detergents to  
clean the speaker cabinet.  
5. Press the right speaker’s black  
(negative) terminal tab and insert  
the other conductor into the open-  
ing, then release the tab.  
• Use and store the speaker in nor-  
mal temperature environments.  
6. Insert the other end of the marked  
conductor into your receiver/  
amplifier’s right positive terminal.  
Temperature  
extremes  
can  
shorten the life of electronic cir-  
cuits.  
7. Connect the remaining conductor  
to the receiver/amplifier’s right  
negative terminal.  
Caution: Do not clean the speaker  
with a vacuum cleaner. This might  
permanently damage it. Clean the  
speaker grille with a feather duster or  
soft cloth.  
8. Repeat these steps for the left  
speaker.  
3
 
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SPECIFICATIONS  
Speaker Complement .............................................8-Inch High-Compliance Woofer  
1-Inch Ferrofluid Cooled Tweeter  
Impedance ......................................................................................Nominal 8 Ohms  
Frequency Response..........................................................................65 Hz–18 kHz  
Power Handling...................................................................................50 Watts RMS  
Maximum Power ........................................................................................100 Watts  
Sensitivity.......................................................................................... 89 dB @2.83 V  
Dimensions (HWD) ...........................................................141/4 ¥ 109/16 ¥ 81/4 Inches  
(35.5 ¥ 25.4 ¥ 21 cm)  
Shipping Weight ................................................................................................ 11 lb  
(4.9 kg)  
Specifications are typical; individual units might vary. Specifications are subject to  
change and improvement without notice.  
RadioShack Limited Warranty  
This product is warranted against defects for 5 years from date of purchase from RadioShack  
company-owned stores and authorized RadioShack franchisees and dealers. Within this period,  
bring your RadioShack sales slip  
we will repair it without charge for parts and labor. Simply  
as  
proof of purchase date to any RadioShack store. Warranty does not cover transportation costs.  
Nor does it cover a product subjected to misuse or accidental damage.  
EXCEPT AS PROVIDED HEREIN, RadioShack MAKES NO EXPRESS WARRANTIES AND  
ANY IMPLIED WARRANTIES ARE LIMITED IN DURATION TO THE DURATION OF THE  
WRITTEN LIMITED WARRANTIES CONTAINED HEREIN. Some states 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.  
10/95  
We Service What We Sell  
RadioShack  
A Division of Tandy Corporation  
Fort Worth, Texas 76102  
7/96  
Printed in the USA  
 

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