RCA STA-3850 Preparation, Positioning Speakers, Connecting Speakers, Preparing the Speaker Wires

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PREPARATION

Caution: Make all the necessary connections before you plug in or turn on the receiver.

POSITIONING SPEAKERS

Speaker (not supplied) placement 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.

Bass response depends largely on speaker location. For strong bass, place the speakers in the corners of the room. If you want even stronger bass, place the speakers directly on the floor. If the bass is too strong, move the speakers slightly away from the corners of the room, or raise them 6 to 18 inches off the floor. You can buy speaker stands at your local RadioShack store.

The distance between the speakers should be about the same as the distance between the normal listening point and the point halfway between the speakers. If you place the speakers too close together, you reduce the stereo separation. If you place them too far apart, you reduce the bass effect and create a hole in the middle of the sound.

Most speakers have a tweeter dispersion angle of about 60 degrees. Ideally, your listening position should be just inside the overlap area of the tweeter dispersion. You can angle the speakers toward you for better stereo effect.

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 pair to the A SPEAKERS

terminals and the other pair to the B SPEAKERS terminals.

Optimus, and other high-quality speakers have color- coded speaker terminals (red for positive polarity and black for negative polarity). Use these color-coded terminals as a guide to help you properly connect the speakers to the receiver.

Use 16-gauge (or larger) speaker wire for all speaker connections, and consider possible speaker locations before you decide how much speaker wire you need.

Preparing the Speaker Wires

Speaker wire consists of two conductors (individual wires) encased in insulation and is usually color-coded or marked with a ridge along one side so you can identify each conductor. Use these markings as a guide to help you properly connect the speakers to your receiver.

Follow these steps to prepare the speaker wires.

1.Cut the speaker wires to the necessary length.

2.Separate the wires about 4 inches on each end.

3.Using a wire stripper, carefully strip about 3/4 inch of insulation from the end of each conductor.

4.Twist the end of each conductor to secure any loose wire strands.

Caution: Twisting the end of each conductor helps prevent a short circuit because stray speaker wire strands do not touch other speaker terminals or any other receiver terminals.

Connecting Speakers to the A and B Terminals

Note:

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.

Fully insert the speaker wires to ensure a good connection. Leave extra wire at the back of the receiver so you do not disconnect the wires when you move the receiver.

Follow these steps to connect each speaker (A right or left or B right or left).

1.Press open the receiver’s positive ( +) red lever for the speaker you want to connect and insert the ridged or color- coded conductor’s end into the small hole. Release the lever to secure the conductor.

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Contents Stereo Receiver Introduction Important Safety Instructions Contents Preparing the Speaker Wires Connecting SpeakersConnecting Speakers to the a and B Terminals PreparationConnecting the Antennas Connecting Program SourcesFM Antennas Connecting to AC Power Installing Remote CONTROL’S BatteriesTuning the Radio Using the Sleep TimerManual and Automatic Tuning OperationDirect Tuning Remote Control Only Memory TuningTuning to a Station in Memory Automatically Storing StationsUsing Headphones Adjusting BalanceCassette Deck Features Using the Reset ButtonTroubleshooting FCC Wants YOU to Know Care and MaintenanceSpecifications Page RadioShack Division of Tandy Corporation Fort Worth, Texas

STA-3850 specifications

The RCA STA-3850 is a versatile and powerful stereo receiver, crafted to deliver exceptional audio performance while providing a number of features that enhance the listening experience. Released during a period when audio technologies were quickly evolving, the STA-3850 embodies a blend of traditional design and innovative advancements.

At the heart of the STA-3850 is its robust amplifier section, providing a substantial output power of 50 watts per channel. This power output allows the receiver to drive a wide array of speakers, ensuring rich and dynamic sound reproduction for various types of music. The receiver is designed to handle a broad frequency response, typically ranging from 20 Hz to 20 kHz, providing a full-bodied audio experience that's ideal for both casual listening and critical listening.

One of the standout features of the RCA STA-3850 is its easy-to-use tuner. It offers AM and FM capabilities, enabling users to access a wide range of radio stations. The built-in stereo decoder enhances FM reception, ensuring that users can enjoy crystal-clear sound with reduced interference. Another key feature is the inclusion of multiple inputs, allowing for the connection of various audio sources, including turntables, CD players, and audio devices, making it a comprehensive solution for an audiophile setup.

The STA-3850 is designed with user convenience in mind. It includes a built-in equalizer, allowing users to tailor the sound to their preferences. This feature makes it possible to boost or cut specific frequency ranges, enhancing the overall listening experience. Additionally, the receiver boasts easy-to-navigate controls, with clearly labeled knobs and buttons, making it user-friendly for all levels of audio enthusiasts.

Durability and build quality are also notable characteristics of the RCA STA-3850. Constructed with sturdy materials, this receiver is designed to last, ensuring longevity for those who invest in it. Its classic aesthetic, featuring a sleek design with an appealing wood veneer finish, makes it a stylish addition to any audio setup.

Overall, the RCA STA-3850 stereo receiver is a well-rounded piece of equipment that combines sound quality, versatility, and user-friendly features. Whether for a dedicated listening room or a casual home environment, this receiver is sure to please anyone seeking to elevate their audio experience.