Optimus STA-3500 owner manual Important Safety Instructions

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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 ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.

To prevent fire or shock hazard, do not expose this sys- tem 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-SERVICE- ABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.

This symbol is intended to alert you to the presence of uninsulated dangerous voltage within the system’s enclosure that might be of sufficient magnitude to constitute a risk of electric shock. Do not open the system’s case.

This symbol is intended to inform you that im-

!portant operating and maintenance instruc- tions are included in the literature acc-

ompanying this system.

CAUTION

Power Lines—Locate an outdoor antenna away from power lines.

Nonuse Periods—Unplug the receiver’s power cord when you will not use it for extended periods.

Outdoor Antenna Grounding —If an outside antenna or cable system is connected to the receiver, ground the antenna or cable system so as to provide some protection against voltage surges and built-up static charges. Article 810 of the National Electrical Code, ANSI/NFPA 80, provides information about proper grounding of the mast and supporting structure, grounding of the lead-in wire to an antenna discharge unit, size of grounding conductors, location of antenna- discharge unit, connection to grounding electrodes, and requirements for the grounding electrode. See the example below.

 

Antenna

 

Lead-In

 

Wire

Ground Clamp

 

 

Antenna

 

Discharge Unit

Electric

(NEC Section 810-20)

Service

Grounding Conductors

Equipment

(NEC Section 810-21)

 

Grounding Clamps

 

Power Service Grounding

NEC -- National Electrical Code

Electrode System

(NEC Article 250, Part H)

 

Careful attention is devoted to quality standards in the manufacture of your receiver, and safety is a major factor in its design. However, safety is also your responsibility.

This section lists important information that will help you properly use and enjoy your receiver and accessories. Read all the included safety and operating instructions before using your receiver. Fol- low them closely, and retain them for future reference.

Heed Warnings — Follow all warnings on the product and in the operating instructions.

Cleaning — Unplug this product from the wall outlet before cleaning. Use only a damp cloth fo r cleaning. Do not use liquid or aerosol cleaners.

Attachments — Do not use attachments/accessories not recommended by the product manufac - turer, as they might create a hazard.

Water and Moisture — Do not use this product near water (for example, near a bathtub, washbowl , kitchen sink, or laundry tub; in a wet basement; or near a swimming pool).

Accessories — Do not place this product on an unstable cart, stand, tripod, bracket, or table. Th e product may fall, causing serious injury to a child or adult, and serious damage to the product. Use only with a cart, stand, tripod, bracket, or table recommended by the manufacturer or sold with the product. Follow the manufacturer's instructions for mounting, and use a recommended mounting accessory.

Carts — Move the product on a cart carefully. Quick stops, excessive force, an d uneven surfaces may cause the product/cart to overturn.

Ventilation — Slots and openings in the cabinet provide ventilation, ensure reli - able operation, and protect from overheating. Do not block or cover these open- ings, and do not place the product on a bed, sofa, rug, or other similar surface. Do not place the product in a built-in bookcase or rack unless it provides proper ven- tilation as specified by the manufacturer.

Power Sources — Operate this product using only the power source indicated on its marking label . If you are not sure of your home's power type, consult your product dealer or local power company.

Polarization — This product is equipped with a polarized AC line plug (a plug having one blad e wider than the other). This plug will fit in the power outlet only one way. This is a safety feature. If you cannot insert the plug fully into the outlet, try reversing the plug. If the plug still doesn't fit, con- tact your electrician to replace your obsolete outlet. Do not defeat the safety purpose of the polar- ized plug. If you need an extension, use a polarized cord.

Power-Cord Protection — Route power-supply cords so they are not likely to be walked on o r pinched by items placed on or against them, paying particular attention to cords at plugs, conve- nience receptacles, and the point where they exit from the product.

Lightning — For added protection for this product during a lightning storm, or when it is left unat - tended and unused for long periods of time, unplug it from the wall outlet and disconnect the anten- na or cable system. This will prevent damage to the product due to lightning and power-line surges.

Overloading — Do not overload wall outlets, extension cords, or integral convenience receptacles , as this can result in a risk of fire or electric shock.

Objects and Liquids — Never push objects of any kind into this product through openings, as the y may touch dangerous voltage points or short out parts that could result in a fire or electric shock. Never spill liquid of any kind on the product.

Servicing — Do not attempt to service this product yourself, as opening or removing covers ma y expose you to dangerous voltage or other hazards. Refer all servicing to qualified service person- nel.

Damage Requiring Service — Unplug this product from the wall outlet and refer servicing to qual - ified service personnel under the following conditions:

When the power-supply cord or plug is damaged.

If liquid has been spilled or objects have fallen into the product.

If the product has been exposed to rain or water.

If the product does not operate normally by following the operating instructions. Adjust only those controls that are covered by the operating instructions, as an improper adjustment of other controls may result in damage and will often require extensive work by a qualified techni- cian to restore the product to normal operation.

If the product has been dropped or damaged in any way.

When the product exhibits a distinct change in performance.

Replacement Parts — When replacement parts are required, be sure the service technician use s replacement parts specified by the manufacturer or having the same characteristics as the original part. Unauthorized substitutions may result in fire, electric shock, or other hazards.

Safety Check — Upon completion of service or repairs to this product, ask the service technicia n to perform safety checks to determine that the product is in proper operating condition.

Wall or Ceiling Mount — The product should be mounted to a wall or ceiling only as recommende d by the manufacturer.

Heat — The product should be situated away from heat sources such as radiators, heat registers , stoves, or other products (including amplifiers) that produce heat.

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Contents AM/FM Please read before using this equipmentIntroducing the Optimus STA-3500 Important Safety Instructions Contents Positioning Speakers Preparing Your ReceiverPreparing the Speaker Wires Connecting SpeakersConnecting the a and B Speakers Connecting Another Audio Source Connecting a TurntableConnecting Cassette Decks Connecting a CD PlayerConnecting the Antennas AM AntennasFM Antennas Terminal Using One Remote Control for More than One Unit Installing Remote Control’s BatteriesConnecting to AC Power Using the AC Power OutletBasic Operation Tuning the Radio Manual and Automatic TuningMemory Tuning Balance Control Using FM MonoUsing Headphones Cassette Deck FeaturesSimultaneous Recording and Playback Using the Tape 1/VCR ButtonUsing the Tape 2 Monitor Button Recording a Program SourceDubbing a Cassette Tape Receiver/Amplifier Section Using the Remote ControlCassette Deck Section CD Player SectionProblem Cause Solution TroubleshootingCare and Maintenance FCC Wants You To Know AM Tuner SpecificationsAmplifier FM TunerGeneral SpecificationsControl Index to Features by Control NamePage Page RadioShack Division of Tandy Corporation Fort Worth, Texas

STA-3500 specifications

The Optimus STA-3500 is a high-performance, compact stereo amplifier that has gained popularity among audiophiles and home theater enthusiasts. Known for its exceptional sound quality and robust construction, the STA-3500 is designed to deliver impressive audio performance without compromising on style or functionality.

One of the standout features of the STA-3500 is its efficient Class D amplification technology. This technology allows the amplifier to deliver high power output while maintaining low heat generation and energy consumption. The STA-3500 can produce up to 50 watts per channel into an 8-ohm load, making it suitable for driving a wide range of speakers, from compact bookshelf models to larger floor-standing units.

The amplifier is equipped with advanced circuitry that ensures minimal distortion and enhanced audio clarity. It utilizes sophisticated filtering techniques, which contribute to a clean, dynamic sound, making it an excellent choice for music enthusiasts who demand the best audio experience. The STA-3500 also features a wide frequency response, allowing it to reproduce low bass notes and high-frequency details with precision.

In terms of connectivity, the STA-3500 provides multiple input options, including RCA and AUX inputs, making it versatile for various audio sources such as CD players, smartphones, and TVs. Additionally, it includes speaker outputs that are compatible with standard banana plugs, spade connectors, or bare wire, ensuring seamless integration into any audio setup.

The build quality of the STA-3500 is another highlight. The amplifier is housed in a sturdy metal chassis that not only enhances its durability but also helps reduce electromagnetic interference. Its sleek design, complete with a brushed aluminum front panel, allows it to fit elegantly into any contemporary audio system.

Lastly, the Optimus STA-3500 features user-friendly controls, including a volume knob and input select switch located on the front panel. This accessibility makes it easy for users to adjust settings on the fly, enhancing the overall listening experience.

In summary, the Optimus STA-3500 is a powerful and compact stereo amplifier that combines advanced Class D technology with high-quality construction. With its impressive power output, minimal distortion, and versatile connectivity options, it stands out as a top choice for anyone looking to elevate their audio experience.