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Covers shock hazard, laser safety, operational cautions, and environmental risks.
Advises on ventilation, avoiding flames, battery handling, and environmental exposure.
Details safety for operation, cleaning, placement, power, grounding, cords, and object entry.
Identifies and lists all controls and features on the main unit of the stereo system.
Instructions for connecting the unit to AC power, including voltage selector and polarized plug details.
Details on installing and using 8 size 'D' batteries for DC power operation.
Steps for selecting bands, tuning stations, adjusting volume, and antenna usage for radio playback.
Instructions for inserting, playing, pausing, and stopping a CD.
Steps for inserting, playing, pausing, stopping, and removing cassette tapes.
Steps for pairing a Bluetooth device and streaming audio wirelessly.
The Supersonic SC-2121BT is a compact disc player, multi-band stereo radio, double cassette recorder, and Bluetooth audio system designed for easy use and versatile audio playback. This comprehensive audio system offers a range of functions, from traditional radio and cassette playback to modern CD and Bluetooth streaming, making it suitable for various listening preferences.
The device integrates several audio components into a single unit. It features a compact disc player that supports standard audio CDs as well as MP3-CDs and WMA files, allowing for extended playback of digital music. The multi-band stereo radio includes AM and FM bands, providing access to a wide range of broadcasts. A telescopic antenna ensures optimal FM reception, while a built-in AM antenna handles AM signals.
For cassette enthusiasts, the SC-2121BT includes a double cassette recorder, enabling both playback and recording functions. This allows users to listen to their existing tape collection, record from the radio, CD, or built-in microphone, and even dub cassettes at high speed. The Bluetooth audio system provides wireless connectivity, allowing users to stream music from their Bluetooth-enabled devices such as smartphones or tablets. An integrated USB port further expands playback options, supporting external memory media like USB data travelers for MP3/USB file playback.
The unit is designed for both portable and stationary use, featuring removable speakers that can be detached for a more compact setup or connected for stereo sound. A handle is provided for easy portability. The system also includes a stereo headphone jack for private listening, which automatically mutes the speakers when headphones are plugged in.
Operating the SC-2121BT is straightforward, with clearly labeled controls on the main unit and a remote control for convenience.
Power and Setup: The device can be powered by either AC current (110/220V ~ 60/50Hz) or eight "D" size batteries, offering flexibility for use at home or on the go. An AC voltage selector ensures compatibility with local power supplies. When using batteries, it's important to use heavy-duty alkaline batteries and replace all batteries at the same time to ensure optimal performance. The speakers are connected to the main unit via dedicated jacks, and care must be taken to align them correctly.
Radio Operation: To play the radio, users slide the function switch to "RADIO," select the desired band (AM or FM), and use the tuning control to find a station. The FM telescopic antenna should be extended for best reception, and the unit can be rotated to optimize signal strength. The volume control adjusts the listening level. An FM stereo indicator illuminates when a stereo broadcast is received.
CD Operation: For CD playback, the function switch is set to "CD." The CD door opens with a dedicated button, and discs are inserted with the label side facing up. The unit automatically begins playing the first track. Playback can be paused, resumed, and stopped using the respective buttons. Users can skip tracks forward or backward and search for specific points within a track by holding the skip/search buttons. The "MODE" button allows for various playback modes, including repeating a single track, repeating all tracks, random play, and introduction play (playing the first ten seconds of each track).
MP3-CD and USB Playback: The player supports MP3-CDs and WMA files, though reading these discs may take longer than standard audio CDs. Once read, playback begins automatically. For USB playback, a USB data traveler is inserted into the USB port, and the function switch is set to "CD" (or the CD/USB button on the remote is used) to switch to USB mode. Playback starts from the first track after successful reading. Similar to CD playback, users can skip tracks, search, and select repeat modes (single track, folder, all tracks) or random play.
Cassette Operation: The double cassette deck allows for both playback and recording. To play a cassette, the cassette door is opened using the stop/eject button, and the tape is inserted with the full reel on the left. The function switch is set to "TAPE," and the play button is pressed. The volume can be adjusted as desired. To stop playback, the stop/eject button is pressed. The unit also features a "Relay Play" function, where deck A plays first, followed automatically by deck B.
Cassette Recording: The SC-2121BT offers multiple recording options.
Bluetooth Operation: To use Bluetooth, the function switch is set to "CD," and the STOP/USB/BT button on the unit (or CD/USB/BT on the remote) is long-pressed to switch to Bluetooth mode. Users then enable Bluetooth on their device, search for "SC-2121BT," and pair. Once paired, music streams automatically from the device.
Remote Control: A remote control is included for convenient operation from a distance. It uses a CR2025 3V lithium battery. The remote operates within a 30-degree angle horizontally and up to 3 meters away.
Proper maintenance ensures the longevity and optimal performance of the device.
General Care: The unit should be kept in a cool, dry area, away from direct sunlight, heat-radiating appliances, and dusty environments. Adequate ventilation is crucial, so ventilation openings should not be blocked. The device should also be protected from moisture and excessive vibration. For cleaning, the unit should be unplugged, and a damp cloth used; liquid or aerosol cleaners are not recommended.
Disc Handling: When handling CDs, users should avoid touching the playing surface and store discs in their cases with the label facing up. Discs should not be placed near heating devices or in high-temperature or dusty areas. Writing on the label surface with a ballpoint pen or sticking labels on the CD is discouraged. Fingerprints or dust on the playing surface should be wiped away with a soft cloth, always wiping from the inside toward the outside in a straight line, never in a circular motion. Conventional record cleaners, anti-static agents, benzene, thinner, or other solvents should not be used.
Cassette Head Cleaning: To maintain sound quality and prevent tape jams, the tape heads, capstan, and pinch roller should be cleaned regularly. This can be done with a cotton swab moistened with a commercially sold head/pinch roller cleaner or alcohol. After cleaning, allow approximately 10 seconds for the fluid to dry before using the cassette deck.
Battery Safety: When using batteries, it's important to remove them if they are exhausted or if the unit will not be used for a long period to prevent leakage and corrosion. Mixing old and new batteries, or different battery types (e.g., alkaline with zinc carbonate, or rechargeable with non-rechargeable), is not recommended. The negative (-) side of the battery should touch the spring during insertion. For the remote control, the battery should be replaced with the same or equivalent type (CR2025 3V lithium battery) and inserted with correct polarity to avoid explosion risk and ensure functionality.
Power| AC power requirement | 110/220V ~ 60/50Hz |
|---|---|
| DC power requirement | 12V UM1/"D" x 8pcs |
| power consumption | 21W |
Operating Environment| operation temperature min | 5°C |
|---|---|
| operation temperature max | 35°C |
Receiver Specifications| AM tuning range | 520 - 1710 KHz |
|---|---|
| FM tuning range | 87 - 108 MHz |
| speaker impedance | 4 ohms |
Weight and Dimensions| length | 590.75 mm |
|---|---|
| width | 213.99 mm |
| height | 244.0 mm |
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