RadioShack 4001975 Tower Speaker User Manual

Product Overview

This user manual provides detailed information for the RadioShack 4001975 Tower Speaker system. It covers operation, technical specifications, features, package contents, control functions, connections, and important usage precautions.

Specifications

Features

• Quality 2.0 speaker system with built-in amplifier.
• Full audio spectrum performance, ideal for MP3, MP4, CD/DVD movies, and digital playback.
• Specially designed woofer cabinet for enhanced bass and resolution.
• Includes a remote control and a 3.5mm stereo connection.

Package Contents

• Subwoofer cabinet: 1 pc
• Satellite cabinet: 1 pc
• Remote control: 1 pc
• User manual: 1 pc
• Audio input cord: 1 pc
• FM ANT: 1 pc

Front Panel Controls

The front panel of the speaker system features the following controls:

• ST-BY/MI: Press to turn on the speaker; long press to enter standby mode. In USB/BT mode, this button functions as PLAY/PAUSE.
• SOURCE: Used to change the input mode (e.g., AUX, BT, USB, FM).
• ►►/VOL+: In USB/BT mode, press to play the next song. In FM mode, press to select the next channel. Long press to increase the volume in all modes.
• ◄◄/VOL-: In USB/BT mode, press to play the previous song. In FM mode, press to select the previous station. Long press to decrease the volume in all modes.
• AUX: Selects the AUX input mode.
• BT: Selects Bluetooth pairing mode. The LED indicator on the right bottom starts flashing when ready to pair. To pair, turn on your mobile device's Bluetooth, search for "4001975", and select it. The LED stops flashing upon successful pairing. Music playback will cause the LED to flash every second. Functions like "PREVIOUS/NEXT" and "PLAY/PAUSE" can be operated via the front panel. In BT mode, pressing "II" for 3 seconds can force-disconnect the Bluetooth function.
• DVD: Resets the system to its default settings.
• 0-9 NUMERIC KEYS: Allows direct song selection in USB mode by pressing the corresponding number. In FM mode, these keys can be used to tune directly to specific frequencies (e.g., pressing 9, 4, 2 tunes to 94.2MHz).
• LED: Press to cycle through different LED lighting effects (LED1, LED2, LED3, LED4, LED5, LED6, LEDF).
• MUTE: Turns the volume off. Press again to reactivate the sound.
• BASS: Adjusts the bass level.
• II: Play/pause function in USB/BT mode. In FM mode, a long press initiates a fully automatic station search.
• Indicator light: A red light flashes once to confirm button operations.

Remote Control Functions

The included remote control provides comprehensive access to the speaker system's features:

• ST-BY/: Powers the unit on or puts it into standby mode.
• TREBLE: Adjusts the treble volume level by +/- 6dB.
• VOL+: Increases the overall volume.
• ◄◄: Plays the previous song in USB/BT mode or selects the previous channel in FM mode.
• VOL-: Decreases the overall volume.
• AUX: Selects the AUX input mode.
• BT: Selects the Bluetooth pairing mode.
• DVD: Resets the system to factory defaults.
• 0-9 NUMERIC KEYS: Allows direct selection of songs (USB) or radio stations (FM).
• LED: Cycles through various LED lighting effects.
• MUTE: Temporarily turns the sound off. Press again to resume sound.
• BASS: Adjusts the bass level.
• II: Controls playback (Play/Pause) in USB/BT modes. In FM mode, a long press performs an automatic scan for stations.
• ►►: Plays the next song in USB/BT mode or selects the next channel in FM mode.
• USB: Selects the USB player mode.
• FM: Selects the FM tuner mode.
• Indicator light: A red light flashes once to indicate a button press.

Microphone Panel

The microphone panel is equipped for vocal input:

• MIC1 & MIC2: Sockets for wired microphones. Microphones function in all operating modes.
• MIC1 VOLUME KNOB: Adjusts the volume level for wired or cordless microphones.
• MIC2 VOLUME KNOB: Adjusts the volume level for microphones.
• ECHO KNOB: Adjusts the microphone echo effect for enhanced vocal performance.

Rear Panel Connections

The rear panel provides essential connectivity:

• ANTENNA: Connection point for the FM antenna to improve radio reception.
• Input: Connect audio sources such as computers, CD players, MP3 players, etc., using the provided audio input cord.
• Output: Connect the satellite speakers to the main unit.
• LIGHT: Control the speaker's integrated light effect.

System Connection Diagram

This diagram illustrates the setup of the speaker system. It shows the main speaker unit, the satellite speakers, and the connection points for audio input sources (e.g., computer, CD player, MP3) and the FM antenna.

Ideal Listening Position and Placement

For optimal audio performance and stereo imaging, place the two tower speakers at an equal distance on either side of your television or DVD player.

Important Usage Precautions

Please observe the following precautions during use:

• If the remote control is unresponsive, the batteries may need replacement.
• [no rain/moisture symbol]: Avoid exposing the unit to water or excessive humidity.
• [no disassembly symbol]: Do not attempt to open or repair the unit yourself, as this may cause damage or void the warranty.
• [caution symbol]: Handle the equipment with care.
• [power symbol]: Ensure the unit is connected to a suitable power source.
• [volume up symbol] / [volume down symbol]: Adjust volume levels appropriately.
• [play/pause symbol]: Use playback controls as needed.
• [next track symbol] / [previous track symbol]: Navigate through audio tracks.
• [FM radio symbol]: Use the FM radio function.
• [Bluetooth symbol]: Utilize the Bluetooth connectivity.
• [USB symbol]: Play audio files from a USB drive.
• [mute symbol]: Temporarily silence the audio output.
• [bass adjustment symbol]: Control the bass response.
• [microphone symbol]: Connect and use microphones.
• [echo effect symbol]: Adjust the microphone echo effect.
• [light effect symbol]: Manage the speaker's lighting features.

FCC Statement

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

To assure continued compliance, any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this equipment. Use only shielded interface cables when connecting to computer or peripheral devices.

This equipment complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

1. This device may not cause harmful interference, and
2. This device must accept any interference received, including interference that may cause undesired operation.

FCC Radiation Exposure Statement:

The equipment complies with FCC Radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20cm between the radiator and your body.