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31-3039 Cat. No. Audio/Video Receiver STAV-3680 DOLBY SURROUND STAV-3680 AUDIO/VIDEO RECEIVER P R O • L O G I C STAND BY TAPE 2 DOLBY DVD/TV LD/SAT TUNER PHONO MODE PRO LOGIC THEATER LOUDNESS TAPE 1 MONITOR POWER VOLUME BASS...
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Dolby, Pro Logic, and the double-D symbol ( RadioShack and Optimus are registered trademarks used by Tandy Corporation. Your Optimus STAV-3680 Audio/Video Receiver is the perfect control center for your audio/video system. It combines 500 watts total Pro Logic Surround Sound...
IMPORTANT SAFETY INSTRUCTIONS This receiver is made and tested to meet exacting safety standards. It meets both UL and FCC require- ments. Warning: To reduce the risk of fire or shock hazard, do not expose this product to rain or moisture. CAUTION RISK OF ELECTRIC SHOCK.
Preparing Your Receiver Caution: Make all the necessary connections before you plug in or turn on the receiver. Positioning Speakers Halfway Point Between Speake Person in Listening Area • Surround speakers generally sound best if you position them above ear level.
Speakers A jacks and one set to the Speakers B jacks. • Optimus and other high-quality speak- ers have color-coded speaker termi- nals (red for positive polarity and black for negative polarity). Use these...
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Note: Be sure you connect the re- ceiver’s right and left positive (+) and negative (–) terminals to the speaker’s corresponding right and left positive (+) and negative (–) terminals. Connecting the A and B Speakers Follow these steps to connect the right speaker to the receiver’s right terminals.
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Preparing Your Receiver Connecting Surround-Sound Speakers You can connect a pair of speakers to the receiver’s terminals REAR SPEAKERS for surround-sound programs. Follow the steps in “Connecting the A and B Speakers.” Connecting the Center Speaker The center speaker gives additional ambience to surround sound. Connect the center speaker to the terminals.
Connecting Program Sources Use shielded audio cables with phono connectors for all audio connections. Note: If you place the cassette deck di- rectly above, below, or to the left of the receiver, the receiver could interfere with the cassette deck’s operation. If possi- ble, position the cassette deck to the right of the receiver or locate it away from the receiver.
Preparing Your Receiver Note: If your VCR is monaural, use a Y- adapter (available at your local Ra- dioShack store) to connect the VCR’s audio output to both the audio in- puts on the receiver. Connecting Video Sources If you connect three video sources such as VCRs, laser disc players, or DVD (digital video disc) players to your receiver, you can use the receiver to select each video source.
Connecting the Antennas Antenna Tabs Antenna Wires Antenna Wires AM Loop Antenna Ground Outdoor AM Antenna AM Loop Antenna Ground Note: For the best results, use 75-ohm coaxial cable to connect an outdoor FM antenna to the receiver. In many cities, the supplied indoor AM loop and FM antennas provide satisfac- tory reception.
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Preparing Your Receiver Warning: To prevent injury, read and fol- low all cautions and warnings that ac- company the outdoor antenna. Caution: The cable’s shielding should only touch the terminal. For the best radio reception, use an outdoor antenna. Follow these steps to connect an outdoor FM antenna to the receiver using 75 cable.
Note: If the remote’s range is reduced, replace the batteries immediately. If you also have an Optimus professional series CD player, VCR, or cassette deck with the OSR mark ( ), you can connect its ceiver so you can control all of your equipment with a single remote control. You can also use the other component’s remote control by pointing it at the re-...
Preparing Your Receiver Using the AC Power Outlet Caution: Do not connect appliances with high power consumption, such as a heater, iron, monitor, or TV, to this AC outlet. Doing so can cause a risk of over- heating and fire, and could damage the receiver.
Basic Operation Warning: To prevent possible hearing loss, turn before MASTER VOLUME you turn on the receiver or change the program sources. After you turn on the receiver or change the program source, adjust to a comfortable listening VOLUME level. Note: If you want to find out what a par- ticular button or control is used for, see Page 23 (for the remote control) or Page...
Basic Operation Balance Control Loudness Control Muting the Receiver Using Headphones control lets you adjust the sound balance between the left and BALANCE right speakers. If you properly position the speakers and your listening area is centered between them, the center control setting is usually best (see “Position- ing Speakers”...
Tuning the Radio Notes: • If you store a frequency in a memory that already contains a frequency, you replace the previous frequency. • If your receiver is disconnected from AC power for several days, it loses all the stored frequencies. You can tune your receiver manually or you can store stations in memory.
Basic Operation Using FM Mono To receive FM stations in stereo, press display. STEREO appears on the display when the tuner receives an FM broad- cast in stereo. You can improve the reception of weak FM stations by pressing MONO appears.
Cassette Deck/VCR Features Using the VCR/TAPE 1 and TAPE 2 Monitor Buttons Recording a Program Source Dubbing a Cassette Tape You can connect two cassette decks to the receiver. Selecting either lets you hear the playback from the cassette deck you con- TAPE 2 MONITOR nected to the receiver’s corresponding ( Press...
Cassette Deck/VCR Features Playing and Recording Video Tapes You can connect two video sources to the receiver. If you connect a VCR to the audio and video jacks, you can copy video cassette tapes from one VCR/TAPE 1 VCR to another and monitor the dubbing process. Playing a Video Cassette Tape To play a video tape, load the tape into the VCR connected to either .
Using Advanced Sound Options Your receiver has three special sound options: Dolby Pro Logic Surround, SFC modes (studio and arena), and 5-D Theater. These special options enhance the sound you hear from a program source. Notes: • To get the full benefit from programs encoded with Dolby Surround Sound, you need a stereo VCR.
Using Advanced Sound Options Sound Mode Adjustments (Remote Control Only) Note: If you do not use a center speaker, the monaural signals are reproduced only if you select PHANTOM. Note: Use the control to adjust VOLUME the overall sound level. Center Mode Setting The center mode setting affects the center channel’s bass signals.
MASTER RECEIVER TAPE VOLUME STAV-3680 AUDIO/VIDEO SYSTEM REMOTE The remote control works up to a distance of about 23 feet, and within a 30-de- gree angle on either side of the receiver. Point the control at the receiver’s front panel and press the desired button(s).
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TAPE2 FUNCTION MONITOR LOUD POEWR MASTER RECEIVER TAPE VOLUME STAV-3680 AUDIO/VIDEO SYSTEM REMOTE CD Player Section Before operation: • Press to select the CD player operation. • Set AUDIO SURROUND AUDIO • You must connect the CD player to both your receiver’s audio jacks for these functions to work.
Try using an AC line noise filter to reduce the noise. You cannot make a usable copy. Check and correct the connections. This feature works only with Optimus Profes- sional Series components. Properly connect the control cable. Properly connect the audio cables.
Care and Maintenance Your STAV-3680 Audio/Video Receiver is an example of superior design and craftsmanship. The following suggestions will help you care for the receiver so you can enjoy it for years. Modifying or tampering with your receiver’s internal components can cause a malfunction and might invalidate the receiver’s warranty and void your FCC authorization to operate it.
The FCC Wants You to Know Your receiver might cause radio or TV interference even when it is operating properly. To determine whether your receiver is causing the interference, turn off your receiver. If the interference goes away, your receiver is causing it. Try to eliminate the interference by: •...
Index to Features by Control Name This table lists the control and indicator names found on the front of your receiver, along with the page number where the con- trol or indicator is discussed. To find a description for the buttons on the remote control, see “Using the Remote Control” on Page 23.
Limited Two-Year Warranty This product is warranted by RadioShack against manufacturing defects in material and workman- ship under normal use for two (2) years from the date of purchase from RadioShack company- owned stores and authorized RadioShack franchisees and dealers. EXCEPT AS PROVIDED HEREIN, RadioShack MAKES NO EXPRESS WARRANTIES AND ANY IMPLIED WARRANTIES, INCLUDING THOSE OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED IN DURATION TO THE DURATION OF THE WRITTEN LIMITED WARRANTIES...
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