Cat. No. 31-3034 Digital Synthesize AM/FM Stereo Receiver STA-3500 VOLUME STA-3500 DIGITAL SYNTHESIZED AM/FM STEREO RECEIVER PHONO TUNER LD/DVD CD TAPE 1 VCR TAPE 2 MONITOR STAND BY POWER SUPER BASS MIN MEMORY PHONES CLASS STATION FM/AM TUNING BASS MAX TREBLE BALANCE SPEAKERS A B FM MONO OSR L Owner’s Manual R Please read before using this equipment.
Introducing the Optimus STA-3500 Your Optimus STA-3500 Digital Synthesized AM/FM Stereo Receiver is the perfect control center for your audio/video system. It combines 100 watts-per-channel of clean power with modern styling. It provides connections for two tape decks, a turntable, a CD player, and one other audio source, such as audio from a digital video disk (DVD) player. You can also connect up to two pairs of speakers (not provided) to your receiver.
IMPORTANT SAFETY INSTRUCTIONS This receiver is made and tested to meet exacting safety standards. It meets both UL and FCC requirements WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE. To prevent fire or shock hazard, do not expose this system to rain or moisture. CAUTION ! RISK OF ELECTRIC SHOCK. DO NOT OPEN. CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER OR BACK. NO USER-SERVICEABLE PARTS INSIDE.
Contents Preparing Your Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Positioning Speakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Connecting Speakers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preparing Your Receiver Caution: Make all the necessary connections before you plug in or turn on the receiver. Positioning Speakers a L R Halfway Point Between Speake b a=b Person in Listening Area Where you place your speakers can make a noticeable difference in your system’s sound. The guidelines in this section will help you choose the best locations. After you use your receiver for a while, you might want to try different locations for your speakers.
Preparing Your Receiver Connecting Speakers Follow these guidelines when you select and connect speakers. • Only connect speakers that are rated at between 8 and 16 Ohms. • Be sure you properly connect all speakers. • Do not connect two pairs of speakers to a single set of terminals (A or B) at the same time. When you use two pairs of speakers, connect one set to Speakers A and one set to Speakers B.
Preparing Your Receiver Connecting the A and B Speakers Notes: • Be sure you connect the receiver’s right and left positive (+) and negative (–) terminals to the speaker’s corresponding right and left positive (+) and negative (–) terminals. Follow these steps to connect the right speaker to the receiver’s right A SPEAKERS terminals. 1. Press the receiver’s A SPEAKERS R (+) red lever and insert the ridged or color-coded conductor’s end into the small hole. Pull back the lever to secure the conductor.
Preparing Your Receiver Connecting Program Sources You can connect up to five external program sources to your receiver.
Preparing Your Receiver Connecting the Antennas Warning: To prevent injury, read and follow all cautions and warnings that accompany the outdoor antenna. In many cities, the supplied indoor AM loop and FM antennas provide adequate reception. AM Antennas Assemble the included antenna’s base by swinging the base in the direction of the arrow and inserting the antenna’s bottom tabs into the base’s slot. Then attach the antenna wires to the AM LOOP ANTENNA and GND terminals.
Preparing Your Receiver For the best radio reception, use an outdoor antenna. Follow these steps to connect an outdoor FM antenna to the receiver using 75Ω cable. Note: If your antenna has 300Ω twin-lead cable, consult your local RadioShack store for the correct adapter. 1. Disconnect the supplied FM antenna from the receiver’s FM UNBAL 75Ω terminal. Inner Insulation 2. With a stripping tool, remove about 1 1/2 inches of the 75Ω cable’s outer insulation to expose the cable’s shielding. 3.
Preparing Your Receiver Using One Remote Control for More than One Unit Note: When you plug the cable into a component’s CONTROL IN jack, that component’s remote sensor does not function. CONTROL IN OUT OUT If you also have an Optimus professional series CD player, VCR, or cassette deck with the OSR mark, you can connect its CONTROL IN jack to the receiver so you can control all of your equipment with a single remote control.
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 overheating and fire, and could damage the receiver. Connecting to AC Power Warning: To prevent electric shock, do not use this polarized plug with an extension cord, receptacle, or other outlet unless you can fully insert the blades to prevent blade exposure.
Basic Operation Warning: To prevent possible hearing loss, turn VOLUME to MIN before you turn on the receiver or change the program sources. After you turn on the receiver or change the program source, adjust VOLUME to a comfortable listening level. Note: The controls on the remote control work the same as the buttons on the receiver’s front panel. Follow these steps to use the receiver. 1. Press POWER to turn on the receiver’s power. It takes about 5 seconds to begin hearing sound. 2. Select the speakers.
Basic Operation Tuning the Radio Note: For weak signals, we recommend manual tuning. Your receiver offers three types of electronic tuning—manual, automatic, and memory. Manual and Automatic Tuning Follow these steps to manually or automatically tune to the stations. 1. Press TUNER. Then press FM/AM to select the desired band. The receiver tunes to and displays the frequency last selected in that band. 2. Press TUNING or once to move to the next higher or lower frequency.
Basic Operation Using FM Mono To receive FM stations in stereo, press FM MONO until MONO disappears from the display. STEREO appears on the display when you receive an FM broadcast in stereo. You can improve the reception of weak FM stations by pressing FM MONO until MONO appears. This reduces noise while you listen to a weak FM station, but you get monaural instead of stereo sound. Balance Control The BALANCE control lets you adjust the sound balance between the left and right speakers.
Basic Operation Using the TAPE 1/VCR Button Press TAPE 1/VCR. TAPE 1 appears on the display. You hear the playback from the cassette deck or VCR you connected to the receiver’s TAPE 1/VCR jacks. Using the TAPE 2 MONITOR Button Press TAPE 2 MONITOR. TAPE 2 appears on the display along with the last program source you selected. You can hear playback or monitor a recording from the cassette deck you connected to the receiver’s TAPE 2 MONITOR jacks.
Basic Operation Dubbing a Cassette Tape You can copy, or dub, a cassette tape from one cassette deck to another. You can use either deck as the playback or recording deck. However, if you want to monitor the cassette deck during dubbing, use the deck connected to the TAPE 1/VCR jacks as the source, and the deck you connected to the TAPE 2 MONITOR jacks as the recording deck. Then press TAPE 2 MONITOR until TAPE 2 appears on the display. See “Using the TAPE 2 MONITOR Button” on the previous page.
Using the Remote Control The remote control works up to a distance of about 23 feet, and within a 30degree angle on either side of the receiver. Point the control at the receiver’s front panel and press the desired button(s). Many buttons on the remote control work the same as buttons on the receiver’s front panel. Use these buttons exactly as you would use the corresponding buttons on the receiver. Receiver/Amplifier Section FUNC Selects a program source (Tape 1/VCR, LD/DVD, CD, tuner, or phono).
Using the Remote Control CD Player Section Note: You must connect the CD player both to your receiver’s CONTROL OUT and audio jacks for these functions to work. CD POWER | ASMS Turns the CD player on and off (only for CD players having the CONTROL IN/OUT feature). | DISC SELECT Selects discs in a multi-play CD changer. Note: Some CD players might function with DISC SELECT. CD BEST ASMS DECK1 Returns to the beginning of the current track or advances to the next track.
Troubleshooting If the receiver is not working as it should, the following suggestions might help. If you follow the suggestions in this chart and the receiver still does not work properly, contact your local RadioShack store for assistance. Problem Cause Solution Power does not turn on. • Power cord is disconnected. • Plug in the power cord. No sound. • Incorrect connections. • Check and correct the connections. • The mute function is activated. • Press MUTING. • The volume is turned down.
Care and Maintenance Your STA-3500 Digital Synthesized AM/FM Stereo 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. Keep the receiver dry. If it gets wet, wipe it dry immediately. Liquids can contain minerals that can corrode the electronic circuits. Handle the receiver gently and carefully. Dropping it can damage its circuit boards and can cause the receiver to work improperly.
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.
Specifications Amplifier Front Channel Average Power Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 Watts per Channel into 8 Ohms From 40 to 20,000 Hz, With No More than 0.9% Total Harmonic Distortion Measured Pursuant to the Federal Trade Commission’s Trade Regulation Rule on Amplifier Output Power Claims Input Sensitivity/Impedance Phono . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications General Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120 Volts AC, 60 Hz Power Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190 Watts (UL) AC Outlet Ratings Switched . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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 control or indicator is discussed. To find a description for the buttons on the remote control, see “Using the Remote Control” on Page 18.
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RadioShack Limited Warranty This product is warranted against defects for 2 years from date of purchase from RadioShack company-owned stores and authorized RadioShack franchisees and dealers. Within this period, we will repair it without charge for parts and labor. Simply bring your RadioShack sales slip 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.