4-1115.fm Page 1 Friday, January 8, 1999 10:31 AM Cat. No. 14-1115 A OWNER’S MANUAL Please read before using this equipment.
14-1115.fm Page 2 Friday, January 8, 1999 10:31 AM FEATURES Your Optimus CTR-108 AC•DC Portable Cassette Recorder is a multi-function recorder. Easy to use and reliable, it is ideal for both personal and business use. Its features include: Automatic Stop — protects the tape and tape handling parts by automatically stopping the tape when it reaches the end. Built-In Condenser Microphone — gives you high sensitivity for recording speakers from several feet away, such as at conferences.
14-1115.fm Page 3 Friday, January 8, 1999 10:31 AM CONTENTS Preparation............................................................................................................. 4 Connecting Power ............................................................................................. 4 Using Internal Batteries .............................................................................. 4 Using AC Power..........................................................................................
14-1115.fm Page 4 Friday, January 8, 1999 10:31 AM PREPARATION CONNECTING POWER You can power the CTR-108 from any of three power sources: • Internal batteries • Standard AC power (with the supplied power cord) • Your vehicle’s cigarette-lighter socket (with an optional DC adapter) Note: Connecting an AC power cord or a DC adapter disconnects the internal batteries. Using Internal Batteries You can power the CTR-108 from four C batteries (not supplied).
14-1115.fm Page 5 Friday, January 8, 1999 10:31 AM Using AC Power To power the CTR-108 from standard AC power, plug the supplied power cord into the AC IN jack on the side of the CTR-108. Then plug the other end into a standard AC outlet. OP TIM US CTR- 108 AC/DCCASSET /BATT TE RE ERY CORD ER Cautions: • Always plug the power cord into the AC IN jack before you plug it into the AC outlet, and always unplug the power cord from the AC outlet before you unplug it from the AC IN jack.
14-1115.fm Page 6 Friday, January 8, 1999 10:31 AM USING AN EARPHONE Traffic Safety For private listening, insert the supplied earphone’s 1/8-inch plug into the EAR jack. Do not wear an earphone while operating a motor vehicle or riding a bicycle. This can create a traffic hazard and can be illegal in some areas. DC IN 6V AUX EAR REM MIC VOLUME Even though some earphones let you hear some outside sounds when listening at normal volume levels, they still can present a traffic hazard.
14-1115.fm Page 7 Friday, January 8, 1999 10:31 AM OPERATION LOADING A CASSETTE TAPE 1. Take up any slack in the tape by turning one of the cassette’s hubs with a pencil. PLAYING A CASSETTE TAPE 1. Load the cassette tape. 2. Press PLAY. The cassette plays until it reaches the end of the side, then it automatically stops. MIC RECO RD PLAY Caution: If you do not remove the excess slack, the tape could become tangled in the record/ playback mechanism. 2.
14-1115.fm Page 8 Friday, January 8, 1999 10:31 AM RECORDING 4. Speak into MIC. Notes: MIC • Before you load a cassette tape for recording, be sure its eraseprotection tabs are in place (see “Preventing Accidental Erasure” on Page 10). • The recorder’s Automatic Level Control (ALC) circuit automatically adjusts the recording level. VOLUME has no effect on recording. Using the Built-In Microphone 1. Load a blank cassette tape, or one you want to record over, into the cassette compartment. 2.
14-1115.fm Page 9 Friday, January 8, 1999 10:31 AM Note: If the external microphone has a separate, smaller plug for remote operation, insert that plug into the REM jack. Then you can use the microphone’s remote switch to stop or start recording. 3. Press RECORD to begin recording. Both PLAY and RECORD lock down. Note: If you connected an external microphone, disconnect it. 1. Load a blank cassette tape, or one you want to record over, into the cassette compartment. 2.
14-1115.fm Page 10 Friday, January 8, 1999 10:31 AM TAPE TIPS Preventing Accidental Erasure Recommended Tapes Tape quality greatly affects the quality of the recording. We recommend extended-range or low noise Type 1 regular length (60- or 90-minute) normalbias cassette tapes. We do not recommend long-play cassette tapes such as C-120s because they are thin and can easily tangle. Erasing a Cassette Tape To record over a cassette tape, simply record as usual.
14-1115.fm Page 11 Friday, January 8, 1999 10:31 AM Restoring Tape Tension and Sound Quality After you play a cassette tape several times, the tape might become tightly wound on the reels. This can cause playback sound quality to deteriorate. To restore the sound quality, fastforward the tape from the beginning to the end of one side, then completely rewind it. Then loosen the tape reels by gently tapping each side of the cassette’s outer shell on a flat surface.
14-1115.fm Page 12 Friday, January 8, 1999 10:31 AM MAINTENANCE Your RadioShack CTR-108 AC•DC Portable Cassette Recorder is an example of superior design and craftsmanship. The following suggestions will help you care for your CTR-108 so you can enjoy it for years. Keep the CTR-108 dry. If it gets wet, wipe it dry immediately. Liquids might contain minerals that can corrode the electronic circuits. Handle the CTR-108 gently and carefully.
14-1115.fm Page 13 Friday, January 8, 1999 10:31 AM CLEANING THE TAPEHANDLING PARTS Dirt, dust, or particles of the tape’s coating can accumulate on the tape heads and other parts that the tape touches. This can cause noise and poor high-frequency response which can greatly reduce the cassette player’s performance. To help keep the cassette player working at its best, clean the cassette player’s tape-handling parts after every 20 hours of use using a tape cleaning kit, such as Cat. No.
-1115.fm Page 14 Friday, January 8, 1999 10:31 AM SPECIFICATIONS CASSETTE PLAYER Track System ................................................................................. 2-Track Monaural Tape Speed ............................................................................................... 4.75 cm/s Recording System ........................................................................................AC Bias Frequency Response (@ ±6 dB) ....................................................
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14-1115.fm Page 16 Friday, January 8, 1999 10:31 AM Limited Ninety-Day Warranty This product is warranted by RadioShack against manufacturing defects in material and workmanship under normal use for ninety (90) days from the date of purchase from RadioShack companyowned stores and authorized RadioShack franchisees and dealers.
