Preparing Your Receiver

Connecting the Antennas

Warning: To prevent injury, read and fol- low 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.

Place the antenna on a flat surface and rotate it for the best AM reception.

If the receiver is in a rack or on a shelf and there is no room for the AM loop antenna, use two screws (not supplied) to mount the base on the wall or another location as shown.

Notes:

AM Loop Antenna

 

FM

AM LOOP

UNBAL

ANTENNA

75

GND

GND

 

ANTENNA

door AM Antenna

 

AM LOOP

 

FM

UNBAL

ANTENNA

75

GND

GND

FM Antenna

 

 

FM

AM LOOP

 

UNBAL

ANTENNA

75

GND

 

GND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Keep the AM loop antenna connected even when you use another indoor antenna or an outdoor AM antenna.

Ensure the antenna does not touch the receiver or other metal objects.

Do not place the antenna near a CD player, a personal computer, or a TV set

If the wire between your AM loop antenna and receiver is too short, you can add extra wire, available at your local RadioShack store.

You can also use a RadioShack shortwave antenna kit (Cat. No. 278- 758), which makes an excellent outdoor AM antenna.

Connect the outdoor AM antenna wire to the receiver’s AM terminal, as shown.

FM Antennas

Connect the supplied FM antenna to the FM UNBAL 75Ω terminal and extend it as shown.

ANTENNA

Note: For the best results, use 75-ohm coaxial cable to connect an outdoor antenna to the receiver.

For better FM reception, you can also use a rabbit-ear TV antenna (for indoor use only) or an outdoor VHF TV antenna. To connect the TV antenna to the receiver, you need a VHF/UHF/FM splitter (not included). RadioShack stores carry a full line of quality outdoor antennas and antenna connection accesso- ries.

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Optimus STA-3500 owner manual Connecting the Antennas, AM Antennas, FM Antennas

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.