| 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.   Download from Www.Somanuals.com. All Manuals Search And Download.   40-4074.fm Page 3 Wednesday, August 11, 1999 10:28 AM   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 Download from Www.Somanuals.com. All Manuals Search And Download.   40-4074.fm Page 4 Wednesday, August 11, 1999 10:28 AM   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   Download from Www.Somanuals.com. All Manuals Search And Download.   |