Optimus System 745 Owner's Manual

Stereo rack system
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13-1293.fm Page 1 Wednesday, July 14, 1999 6:49 PM
Owner's Manual
Please read before using this equipment.
Cat. No. 13-1293
System 745
Stereo Rack System

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Table of Contents
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Summary of Contents for Optimus System 745

  • Page 1 13-1293.fm Page 1 Wednesday, July 14, 1999 6:49 PM Owner’s Manual Cat. No. 13-1293 System 745 Stereo Rack System Please read before using this equipment.
  • Page 2 TO QUALIFIED PERSONNEL. commercial (personal) use. This symbol is intended to alert you The System 745 is made and tested to to the presence of uninsulated dan- meet exacting safety standards. It gerous voltage within the system’s...
  • Page 3 13-1293.fm Page 3 Wednesday, July 14, 1999 6:49 PM FEATURES Your Optimus System 745 Stereo Preset Tuning Memories — let you Rack System is a versatile sound sys- store 24 FM and 12 AM stations for tem combining a 100 watt-per-channel quick tuning.
  • Page 4: Other Features

    Decorative Cloth Grilles — hides the speaker drivers without obstructing We recommend you record the serial the sound. number of the System 745 here. The number is on the system’s back panel. Serial Number: __________________...
  • Page 5: The Fcc Wants You To Know

    13-1293.fm Page 5 Wednesday, July 14, 1999 6:49 PM THE FCC WANTS YOU TO KNOW This equipment complies with the lim- its for a Class B digital device as spec- ified in Part 15 of FCC Rules . These limits provide reasonable protection against radio and TV interference in a residential area.
  • Page 6: Table Of Contents

    13-1293.fm Page 6 Wednesday, July 14, 1999 6:49 PM CONTENTS Preparation ......................8 Unpacking the System ..................8 Placing the Speakers ..................8 Connecting the Speakers ................9 Front Speakers ..................10 Center Speaker ..................10 Surround Speakers ................. 10 Connecting the Antennas ................
  • Page 7 13-1293.fm Page 7 Wednesday, July 14, 1999 6:49 PM Audible Search ....................28 Repeat Play ....................29 Random Play ....................29 Intro Scan ...................... 30 Assigning Category and Subcategory Names to Loaded CDs ..... 31 Assigning Preset Category Names ............31 Creating and Assigning New Category Names ........
  • Page 8: Preparation

    • Do not connect the system to AC power until you complete all other connections. The System 745 includes one center, two front, and two rear (surround) • Be sure to follow all the instruc- speakers. Before you connect them, tions in the enclosed “Safety...
  • Page 9: Connecting The Speakers

    13-1293.fm Page 9 Wednesday, July 14, 1999 6:49 PM 2. For the best stereo effect, place CONNECTING THE the front speakers on each side of SPEAKERS the center speaker so: • the distance between each For the best results, connect the two speaker and the center speaker front speakers to the FRONT SPEAK-...
  • Page 10: Front Speakers

    13-1293.fm Page 10 Wednesday, July 14, 1999 6:49 PM Front Speakers Center Speaker 1. Press the left front speaker’s posi- tive red terminal tab, insert one stripped end of the supplied red speaker wire into the terminal, then release the tab. 2.
  • Page 11: Connecting The Antennas

    13-1293.fm Page 11 Wednesday, July 14, 1999 6:49 PM 3. Repeat Steps 1 and 2 to connect To connect an FM antenna, hold down the right rear speaker to the both SUR- EXTERNAL ANTENNA FM 300Ω terminal tabs, insert the stripped ends ROUND SPEAKERS R (+) (–) terminals.
  • Page 12: Connecting The Am Loop Antenna

    13-1293.fm Page 12 Wednesday, July 14, 1999 6:49 PM Connecting the AM Loop 1. Plug the turntable’s cables into the Antenna (white) and (red) jacks PHONO L on the back of the system. 1. Unwind the supplied AM loop antenna wires about two turns. 2.
  • Page 13: Putting Batteries In The Remote Control

    No. 23-557. CONNECTING HEADPHONES You can connect a pair of head- phones to the System 745 to listen in private. Your local RadioShack store has a wide selection of headphones. To connect headphones to the sys- 1. Remove the battery compartment tem, put the headphones’...
  • Page 14: Listening Safely

    (see “Pro- increase it. Over time, your ears grammed Play” on Page 36), resetting adapt to the volume level, so a the System 745 clears that sequence volume level that does not cause from memory. discomfort might still damage your Follow these steps to reset the sys- hearing.
  • Page 15: Operation

    13-1293.fm Page 15 Wednesday, July 14, 1999 6:49 PM OPERATION BASIC OPERATION POWER ON scrolls across the dis- play, the STANDBY indicator turns off, and the TAPE TUNER Cautions: , and function but- PHONO VIDEO • The system automatically reduces tons light.
  • Page 16: Using The Remote Control

    13-1293.fm Page 16 Wednesday, July 14, 1999 6:49 PM 5. Adjust on the USING THE REMOTE MASTER VOLUME system (or press MASTER VOL – CONTROL or + on the remote control) to a comfortable listening level. The buttons on the remote control per- form the same functions as similarly marked buttons on the system’s front panel.
  • Page 17: Dolby Pro Logic Surround

    Dolby Surround. makes movies more exciting by creat- ing a more realistic audio experience The System 745 gives you the best to accompany the action on the sound performance from music sourc- screen. Rather than all the sound...
  • Page 18 13-1293.fm Page 18 Wednesday, July 14, 1999 6:49 PM • Select OFF (so neither indicator : Select this mode when PHANTOM lights) when using stereo head- not using a center speaker. The phones, playing a monaural sound present at the center of the program, or receiving a weak screen is routed equally to the left FM broadcast (the sound qual-...
  • Page 19: Adjusting The Sound

    13-1293.fm Page 19 Wednesday, July 14, 1999 6:49 PM ADJUSTING THE SOUND to adjust the output BALANCE level (balance) between the left and right channel of the front speakers or Press (extended bass) to E-BASS headphones. to emphasize bass sounds. To cancel extended bass, press again.
  • Page 20: Using The Tuner

    13-1293.fm Page 20 Wednesday, July 14, 1999 6:49 PM USING THE TUNER Press on the system (or 2. Repeatedly press TUNER TUN- FM/TUNE MODE on the remote control). The on the system until disap- ER/BAND AUTO tuner automatically tunes to the sta- pears from the display.
  • Page 21: Memory Tuning

    13-1293.fm Page 21 Wednesday, July 14, 1999 6:49 PM MEMORY TUNING Note: Use only the but- MEMORY ton next to on the FM/TUNE MODE tuner to automatically store sta- You can automatically or manually tions. (The MEMORY button next store up to 36 stations (AM or FM) in on the CD changer per- CLEAR the system’s memory.
  • Page 22: Manually Storing Stations

    13-1293.fm Page 22 Wednesday, July 14, 1999 6:49 PM Manually Storing Stations 4. When the memory location you want to use appears, press MEM- 1. Tune to the station you want to within 10 seconds. MEMORY store. disappears, display shows the selected memory loca- 2.
  • Page 23: Changing The Tuning Increment

    10 kHz for AM and 200 kHz for FM, which is standard in the United States. If you use the System 745 in Europe or other parts of the world where fre- quencies are broadcast in increments of 9 kHz for AM and 50 kHz for FM, you can change the system’s tuning...
  • Page 24: Using The Cd Changer

    13-1293.fm Page 24 Wednesday, July 14, 1999 6:49 PM USING THE CD CHANGER Press on the system to select the LOADING CDS CD changer function. Important: Make sure you remove the protective cardboard sheet from the CD compartment before you load and play CDs (see “Unpacking the Sys- tem”...
  • Page 25 13-1293.fm Page 25 Wednesday, July 14, 1999 6:49 PM 3. Repeatedly press Cautions: To prevent damage to DISC SKIP on the CD changer the CD: DOWN or + on the DISC SELECT – • Load only remote control) until DISC CDs that are the disc number you want to marked with:...
  • Page 26: Selecting A Cd

    13-1293.fm Page 26 Wednesday, July 14, 1999 6:49 PM After the CD changer checks all Note: If you select a number that disc trays, the display shows each does not have a CD assigned to it, loaded CD’s disc number at the appears on the display.
  • Page 27: Playing Cds

    13-1293.fm Page 27 Wednesday, July 14, 1999 6:49 PM PLAYING CDS • A sudden shock or jolt while a CD is playing might suddenly change the CD’s rotation speed 1. With play stopped, select the CD or make the CD changer skip you want to play.
  • Page 28: Skipping Tracks

    13-1293.fm Page 28 Wednesday, July 14, 1999 6:49 PM SKIPPING TRACKS AUDIBLE SEARCH To skip backward or forward to anoth- To search for a particular section of a er track (while a CD is playing, track (while a CD is playing), hold paused, or stopped), repeatedly press down SKIP/SEARCH...
  • Page 29: Repeat Play

    13-1293.fm Page 29 Wednesday, July 14, 1999 6:49 PM REPEAT PLAY RANDOM PLAY You can repeat a single track on any During random play, the CD changer loaded CD, all tracks on a selected randomly selects and plays tracks un- CD, all tracks on all loaded CDs, or a til you stop it.
  • Page 30: Intro Scan

    13-1293.fm Page 30 Wednesday, July 14, 1999 6:49 PM 3. To make another random selec- INTRO SCAN tion during play, press RANDOM Press to play the first 10 sec- INTRO • In the RANDOM 1 mode, the CD onds of each track, beginning with the changer randomly selects...
  • Page 31: Assigning Category And Subcategory Names To Loaded Cds

    13-1293.fm Page 31 Wednesday, July 14, 1999 6:49 PM Assigning Preset Category ASSIGNING CATEGORY Names AND SUBCATEGORY NAMES TO LOADED CDS 1. With play stopped, select the desired CD. You can assign a category name to 2. Repeatedly press ENTER CATE- each loaded CD, and then use cate- on the CD changer GORY MAIN...
  • Page 32: Creating And Assigning New Category Names

    13-1293.fm Page 32 Wednesday, July 14, 1999 6:49 PM Note: If new category names 3. Repeatedly press the appropriate have been created (see “Creating key on the CD DISC SELECT Assigning Category changer until the desired charac- Names”), they appear after CLAS ter replaces the flashing _ on the display.
  • Page 33: Creating And Assigning Subcategory Names

    13-1293.fm Page 33 Wednesday, July 14, 1999 6:49 PM Creating and Assigning Note: If you make a mistake, repeatedly press SKIP/SEARCH Subcategory Names until the incorrect character flashes, then You can create up to 24 subcategory enter the correct character. names that contains up to 8 charac- ters (including letters, numbers, and 7.
  • Page 34: Changing/Erasing Category And Subcategory Names

    13-1293.fm Page 34 Wednesday, July 14, 1999 6:49 PM Changing/Erasing Category Follow these steps to erase a CD’s category and subcategory name. and Subcategory Names 1. With play stopped, select the When you change or erase a CD’s desired CD. category name, the CD changer auto- 2.
  • Page 35: Category/Subcategory Play

    13-1293.fm Page 35 Wednesday, July 14, 1999 6:49 PM Category/Subcategory Play 3. Press on the CD PLAY/PAUSE changer (or on the remote Note: You can randomly play tracks control). appear, PLAY and on CDs by category or subcategory SEARCHING DISC and the (see “Random Play”...
  • Page 36: Programmed Play

    13-1293.fm Page 36 Wednesday, July 14, 1999 6:49 PM PROGRAMMED PLAY 4. Press (next to MEMORY CLEAR on the CD changer. . stops PROG flashing, the CD changer pro- You can program up to 48 selections grams your selection, and the from all loaded CDs to play in any or- number under STEP...
  • Page 37: Reviewing The Programmed Sequence

    13-1293.fm Page 37 Wednesday, July 14, 1999 6:49 PM Reviewing the Programmed 4. Press (next to MEMORY CLEAR on the CD changer to store the Sequence selection. With play stopped, repeatedly press 5. Repeat Steps 2–4 as necessary (next to ) on the CD MEMORY CLEAR...
  • Page 38: Clearing The Programmed Sequence

    13-1293.fm Page 38 Wednesday, July 14, 1999 6:49 PM Clearing the Programmed CD CARE TIPS Sequence Even though a CD is very durable, you The CD changer saves a programmed should handle it with care. sequence as long as power is sup- •...
  • Page 39: Using The Cassette Deck

    13-1293.fm Page 39 Wednesday, July 14, 1999 6:49 PM USING THE CASSETTE DECK Press on the system to select • Use only Type-1 (normal-bias) or TAPE the cassette deck function. Type-2 (CrO ) tapes. Your local RadioShack store sells a com- plete selection of blank tapes.
  • Page 40: Playing A Cassette Tape

    13-1293.fm Page 40 Wednesday, July 14, 1999 6:49 PM PLAYING A CASSETTE 2. If the tape is marked DOLBY NR, . Otherwise, DOLBY NR TAPE (see “Using DOLBY NR Dolby Noise Reduction” on Page 1. Press PLAY to start play. 41).
  • Page 41: Using Consecutive Play (Deck 2 To Deck 1)

    REDUCTION fast-forward, or rewind, the tape mechanism in Deck 1 automati- cally releases. The System 745’s cassette Deck uses the Dolby-B NR (noise reduction) sys- 4. Press to stop play- STOP/EJECT tem which lowers the level of back- back at any time.
  • Page 42: Recording

    13-1293.fm Page 42 Wednesday, July 14, 1999 6:49 PM RECORDING 3. Set the dubbing speed. • To record in half the normal You can use the System 745 to record recording time, press HIGH onto a cassette tape from the follow-...
  • Page 43: Dubbing (Copying) Cds

    13-1293.fm Page 43 Wednesday, July 14, 1999 6:49 PM Note: To monitor the tape while it 4. Press on Deck 1, wait for PLAY is copying, adjust the blank tape to play past the MASTER VOL- – or tape leader (about 8 seconds), MASTER VOL MAS- + on the remote control)
  • Page 44: Recording From The Tuner Or An Audio Source

    Deck 1. Press STOP/EJECT an external audio source connected to again to open the cassette com- the System 745, such as a turntable, a partment and remove the cassette VCR, or video equipment. tape. 1. Load a blank cassette tape, or...
  • Page 45: Tape Tips

    13-1293.fm Page 45 Wednesday, July 14, 1999 6:49 PM TAPE TIPS Caution: Removing the erase-protec- tion tab does not prevent a bulk tape eraser from erasing a cassette. Storing Cassettes Do not store cassette tapes in places Erasing a Cassette Tape with high temperature or high humidity or where large amounts of dust or dirt To erase a cassette tape, select an...
  • Page 46: Troubleshooting

    13-1293.fm Page 46 Wednesday, July 14, 1999 6:49 PM TROUBLESHOOTING If your system is not working as it should, these suggestions might help you elimi- nate the problem. If the system still does not operate properly, take it to your local RadioShack store for assistance.
  • Page 47 13-1293.fm Page 47 Wednesday, July 14, 1999 6:49 PM Symptom Possible Cause Suggestion Abnormal CD or display System memory must be Reset the system (see operation. reset. “Resetting the System” on Page 14). Poor sound quality dur- Cassette tape heads, Clean the cassette tape ing cassette tape play- capstans, tape guides,...
  • Page 48: Care And Maintenance

    13-1293.fm Page 48 Wednesday, July 14, 1999 6:49 PM CARE AND MAINTENANCE Your Optimus System 745 Stereo Rack System is an example of superior design and craftsmanship. The following suggestions will help you care for the system so you can enjoy it for years.
  • Page 49: Cleaning The Tape-Handling Parts

    13-1293.fm Page 49 Wednesday, July 14, 1999 6:49 PM CLEANING THE TAPE- 4. Use a cotton swab dipped in denatured alcohol or tape head HANDLING PARTS cleaning solution to gently clean the record/play heads, pinch roll- Dirt, dust or particles of the tape’s ers, capstans, tape guides, and coating can accumulate on the tape erase head.
  • Page 50: Specifications

    13-1293.fm Page 50 Wednesday, July 14, 1999 6:49 PM SPECIFICATIONS GENERAL Power Requirements ............120V AC (±10%), 60 Hz Power Consumption ................. 230 Watts × × Main Console Dimensions (HWD) ........ 16 Inches × × (420 460 mm) Weight ......................36 lb (16.3 kg) AMPLIFIER Main Amplifier...
  • Page 51: Infrared Remote Control

    13-1293.fm Page 51 Wednesday, July 14, 1999 6:49 PM TUNER (AM) Frequency Range: In 10 kHz Steps ...... 520–1710 kHz In 9 kHz Steps ......522–1710 kHz Sensitivity (with supplied AM Loop antenna): ....900 µV/M CD CHANGER CD Transport Type ............. 24–Disc Bidirectional Radial Frequency Response ................
  • Page 52 13-1293.fm Page 52 Wednesday, July 14, 1999 6:49 PM Limited One-Year Warranty This product is warranted by RadioShack against manufacturing defects in material and workman- ship under normal use for one (1) year from the date of purchase from RadioShack company-owned stores and authorized RadioShack franchisees and dealers.

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