1. Introduction
Thank you for purchasing the Roxel RCD-S70BT Portable Boombox CD Player. This device offers a versatile audio experience with features including CD playback, USB MP3 playback, FM radio, 3.5mm AUX input, headphone jack, and wireless music streaming via Bluetooth. Its compact and portable design makes it suitable for both indoor and outdoor use. This manual provides detailed instructions for setup, operation, maintenance, and troubleshooting to ensure optimal performance and longevity of your boombox.
2. Safety Information
Please read all safety instructions carefully before using this product. Keep this manual for future reference.
- Power Source: Use only the specified power supply (AC 220V/50Hz or 110V/60Hz) or 4 x DC1.5V UM-2 (C size) batteries. Do not mix old and new batteries or different types of batteries.
- Water and Moisture: Do not expose the unit to rain, moisture, or dripping/splashing liquids. Do not place objects filled with liquids, such as vases, on the unit.
- Heat: Do not place the unit near heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
- Ventilation: Ensure proper ventilation. Do not block any ventilation openings.
- Cleaning: Unplug the unit from the power outlet before cleaning. Use a dry cloth for cleaning.
- Servicing: Do not attempt to service this product yourself. Refer all servicing to qualified service personnel.
- CD Compartment: Never open the CD compartment while a disc is spinning.
- Laser Safety: This product utilizes a Class 1 laser. Avoid direct exposure to the laser beam.
3. Product Overview
3.1 Main Unit

Figure 3.1: Front view of the Roxel RCD-S70BT Boombox with its remote control. The boombox features a central LED display, control buttons, two speakers, and USB/AUX ports at the bottom.

Figure 3.2: Angled view of the Roxel RCD-S70BT Boombox, highlighting its compact and portable design with a top handle and extendable antenna.

Figure 3.3: The Roxel RCD-S70BT Boombox with its approximate dimensions: 29cm width, 13cm height, and 23cm depth, illustrating its compact size.
The main unit includes:
- CD Compartment: Top-loading CD player.
- LED Display: 4-digit LCD display for mode, track, time, and FM frequency.
- Control Buttons: Power, Function/EQ, Volume knob, Skip/Tune buttons (Previous/Next), Play/Pause/Scan, Repeat/Memory.
- Speakers: Two integrated audio speakers.
- Ports: USB port, 3.5mm AUX input, Headphone jack.
- Antenna: Telescopic FM antenna.
- Handle: Integrated carrying handle.
3.2 Remote Control
The included remote control allows for convenient operation from a distance. It features buttons for power, mode selection (CD, USB, AUX, Bluetooth, FM), volume adjustment, track skipping, play/pause, EQ modes, and FM station memory.
4. Setup
4.1 Power Supply
The Roxel RCD-S70BT can be powered by AC electricity or batteries.
- AC Power: Connect the supplied power cable to the AC input jack on the back of the unit and then to a standard wall outlet (220V/50Hz or 110V/60Hz).
- Battery Power: For portable use, insert 4 x DC1.5V UM-2 (C size) batteries into the battery compartment located on the bottom of the unit. Ensure correct polarity (+/-) as indicated inside the compartment. Batteries are not included.
4.2 Initial Setup
- Antenna: Extend the telescopic FM antenna for better radio reception.
- Placement: Place the boombox on a stable, flat surface away from direct sunlight, heat sources, and excessive dust or moisture.
5. Operating Instructions
5.1 Power On/Off
Press the POWER button on the unit or remote control to turn the boombox on or off.
5.2 Mode Selection
Press the FUNCTION button on the unit or the MODE button on the remote control to cycle through available modes: CD, USB, FM Radio, AUX, and Bluetooth (BT).
5.3 Volume Adjustment
Rotate the VOLUME knob on the unit or press the VOL+ / VOL- buttons on the remote control to adjust the sound level.
5.4 CD Playback
- Open the CD compartment cover.
- Place a CD (compatible with CD-R/CD-RW) with the label side facing up.
- Close the CD compartment cover.
- Select CD mode. The unit will automatically begin playing the disc.
- Use SKIP/TUNE+ and SKIP/TUNE- buttons to skip tracks.
- Press PLAY/PAUSE to pause or resume playback.
- Press STOP to stop playback.
- Press REPEAT to repeat the current track or all tracks.
5.5 USB MP3 Playback
- Insert a USB flash drive containing MP3 or WMA audio files into the USB port.
- Select USB mode. The unit will automatically detect and begin playing the audio files.
- Use SKIP/TUNE+ and SKIP/TUNE- buttons to skip tracks.
- Press PLAY/PAUSE to pause or resume playback.
- Press STOP to stop playback.
- Press REPEAT to repeat the current track or all tracks.
5.6 FM Radio Operation
- Select FM Radio mode.
- Auto Scan: Press and hold the SCAN button (or PLAY/PAUSE/SCAN on unit) to automatically scan and save available FM stations. The unit can store up to 20 stations.
- Manual Tuning: Briefly press SKIP/TUNE+ or SKIP/TUNE- to fine-tune the frequency.
- Recalling Presets: Use the PREV/NEXT buttons on the remote or SKIP/TUNE+ and SKIP/TUNE- on the unit after auto-scanning to navigate through saved stations.
5.7 AUX Input
- Connect an external audio device (e.g., smartphone, MP3 player) to the 3.5mm AUX input jack using an AUX cable (included).
- Select AUX mode.
- Audio from the connected device will now play through the boombox speakers. Control playback from your external device.
5.8 Bluetooth (Wireless) Streaming
- Select Bluetooth (BT) mode. The LED display will show "BT" and the unit will enter pairing mode.
- Enable Bluetooth on your smartphone, tablet, or other compatible device.
- Search for "Roxel RCD-S70BT" (or similar) in your device's Bluetooth settings and select it to pair.
- Once paired, you can stream audio wirelessly from your device to the boombox.
- Use the boombox's controls or your connected device to manage playback (play/pause, skip tracks).
5.9 Headphone Jack
Connect standard 3.5mm headphones to the headphone jack for private listening. When headphones are connected, sound will be muted from the main speakers.
5.10 Equalizer (EQ) Modes
Press the EQ button on the unit or remote control to cycle through five preset equalizer modes: ROCK, POP, FLAT, CLASS (Classical), and JAZZ. This allows you to optimize the sound profile for different music genres.
6. Maintenance
- Cleaning: Disconnect the power before cleaning. Use a soft, dry cloth to clean the exterior of the unit. Do not use abrasive cleaners, waxes, or solvents.
- CD Lens Care: To clean the CD lens, use a commercially available CD lens cleaner.
- Storage: If the unit will not be used for an extended period, remove the batteries to prevent leakage and store the unit in a cool, dry place.
- Handling Discs: Always hold CDs by their edges. Keep them clean and free from scratches.
7. Troubleshooting
If you experience issues with your Roxel RCD-S70BT, please consult the following table before seeking professional service.
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Power cable not connected; Batteries depleted or incorrectly inserted. | Ensure AC cable is securely plugged in. Replace batteries or check polarity. |
| No sound | Volume too low; Wrong mode selected; Headphones connected. | Increase volume. Select correct mode (CD, USB, FM, AUX, BT). Disconnect headphones. |
| CD not playing / Disc error | Disc inserted incorrectly; Disc is dirty or scratched; Disc format not supported. | Reinsert disc correctly. Clean disc with a soft cloth. Use compatible CD-R/CD-RW discs. |
| USB not playing | USB drive not inserted correctly; USB drive corrupted; Unsupported file format. | Reinsert USB drive. Try a different USB drive. Ensure files are MP3/WMA format. |
| Poor FM reception | Antenna not extended; Weak signal. | Fully extend and adjust the telescopic antenna. Try relocating the unit. |
| Bluetooth pairing failed | Boombox not in BT mode; Device Bluetooth off; Device too far. | Ensure boombox is in BT mode. Turn on Bluetooth on your device. Move device closer to boombox. |
8. Specifications
| Feature | Specification |
|---|---|
| Product Model | Roxel RCD-S70BT (Item model number: RC-S70BT) |
| Product Dimensions (L x W x H) | 27 x 21 x 13 cm (approx. 9.4 x 7.9 x 4.3 inches) |
| Item Weight | 1.53 Kilograms |
| Power Output | 2 x 2W (Total 4W) |
| Power Source | AC 220V/50Hz, 110V/60Hz or DC 1.5V UM-2 batteries x 4pcs (not included) |
| Supported CD Formats | CD, CD-R, CD-RW |
| Supported USB Formats | MP3, WMA |
| FM Radio Presets | Up to 20 stations |
| EQ Modes | ROCK, POP, FLAT, CLASS, JAZZ |
| Connectivity | Bluetooth, USB, 3.5mm AUX Input, 3.5mm Headphone Jack |
| Display | 4-digit LCD display |
| Color | Blue |
9. Warranty and Support
The Roxel RCD-S70BT Boombox comes with a one-year warranty. In the event of a malfunction during the first 12 months after your purchase, Roxel will repair or replace the unit. Please retain your proof of purchase for warranty claims.
For technical support or warranty inquiries, please refer to the contact information provided with your product packaging or visit the official Roxel website.