TCL S643W
TCL S643W 3.1 Channel Soundbar User Manual
Model: S643W
Introduction
This manual provides essential information for the setup, operation, and maintenance of your TCL S643W 3.1 Channel Soundbar. Please read this manual thoroughly before using the product to ensure proper functionality and safety.
The TCL S643W Soundbar is designed to enhance your audio experience with Dolby Audio and DTS Virtual:X technologies, delivering clear dialogue, rich detail, and immersive sound for your entertainment.
Package Contents
Verify that all components are present in the package:
- TCL S643W Soundbar
- Wireless Subwoofer
- Remote Control (with batteries)
- Power Cords (for soundbar and subwoofer)
- HDMI Cable
- Wall Mount Kit (if included)
- User Manual (this document)

Image: The TCL S643W Soundbar and its accompanying wireless subwoofer, both in black, are shown. The soundbar is long and slender, designed to sit in front of a television, while the subwoofer is a compact rectangular unit.
Setup Guide
1. Placement
Place the soundbar centrally below your television. The wireless subwoofer can be placed anywhere in the room, ideally within 10 meters (30 feet) of the soundbar for optimal wireless connection.

Image: A diagram showing the dimensions of the TCL S643W soundbar and its subwoofer. The soundbar measures 81 cm in length, 6.2 cm in height, and 9.7 cm in depth. The subwoofer measures 19.5 cm in width, 32 cm in height, and 19.5 cm in depth.
2. Power Connection
- Connect the power cord to the soundbar's power input and then to a wall outlet.
- Connect the power cord to the subwoofer's power input and then to a wall outlet.
- The soundbar and subwoofer will automatically pair when powered on. A solid blue light on the subwoofer indicates a successful connection.
3. Audio Connection Options
Choose one of the following methods to connect your soundbar to your television or other audio source:
HDMI ARC (Recommended)
For the best audio quality and control, use the HDMI ARC connection.
- Connect one end of the provided HDMI cable to the HDMI ARC port on your soundbar.
- Connect the other end of the HDMI cable to the HDMI ARC port on your television.
- Ensure your TV's HDMI ARC function is enabled in its settings.

Image: An illustration highlighting the HDMI 1.4 ARC connection. The soundbar and subwoofer are shown with blue sound waves emanating, indicating audio transmission, and the HDMI ARC logo is prominently displayed.
Bluetooth Connection
Connect your mobile devices wirelessly via Bluetooth.
- Press the Bluetooth button on the soundbar or remote control to enter pairing mode. The indicator light will flash blue.
- On your device (smartphone, tablet), enable Bluetooth and select "TCL S643W" from the list of available devices.
- Once connected, the indicator light on the soundbar will turn solid blue.

Image: An illustration demonstrating Bluetooth connectivity. A smartphone displaying a music player interface is shown, with a Bluetooth logo and wavy lines indicating wireless connection to the soundbar and subwoofer.
Operating Instructions
Basic Functions
- Power On/Off: Press the power button on the remote or soundbar.
- Volume Control: Use the Volume Up/Down buttons on the remote or soundbar.
- Input Selection: Press the Source button on the remote to cycle through HDMI ARC, Bluetooth, and other available inputs.
Sound Modes and Enhancements
The TCL S643W offers various sound modes and enhancements to optimize your listening experience:
- Standard: General audio setting for balanced sound.
- Music: Optimized for music playback.
- Movie: Enhances cinematic audio with dynamic range.
- Voice: Improves dialogue clarity.
- Game: Provides immersive audio for gaming.
- Sports: Tailored for sports broadcasts.
- Bass Boost: Increases the low-frequency output for a more impactful bass.
Use the dedicated buttons on your remote control to select these modes. Some modes may also be accessible via a companion app if available.

Image: An illustration depicting the Bass Boost feature. The soundbar and subwoofer are shown with powerful blue sound waves, indicating enhanced bass output, set against a dynamic background.

Image: A visual representation of Dolby Audio technology. A couple is shown enjoying entertainment on a TV with the soundbar and subwoofer, surrounded by circular sound waves emanating from the Dolby Audio logo.
Maintenance and Care
- Cleaning: Use a soft, dry cloth to clean the surfaces of the soundbar and subwoofer. Do not use liquid cleaners or abrasive materials.
- Ventilation: Ensure adequate ventilation around the soundbar and subwoofer. Do not block any ventilation openings.
- Storage: If storing the unit for an extended period, disconnect it from the power supply and store it in a cool, dry place.
- Avoid Moisture: Keep the soundbar and subwoofer away from water, rain, and excessive humidity.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound from soundbar |
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| Subwoofer not producing sound |
|
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| Bluetooth pairing issues |
|
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| Remote control not working |
|
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Specifications
| Feature | Detail |
|---|---|
| Model Name | S643W |
| Speaker Type | Soundbar with Wireless Subwoofer |
| Channel Configuration | 3.1 Channels |
| Total Audio Power | 240 Watts |
| Audio Technologies | Dolby Audio, DTS Virtual:X |
| Connectivity | Bluetooth 5.3, HDMI ARC |
| Compatible Devices | Smartphone, Tablet, Laptop, Television, Game Console |
| Soundbar Dimensions (L x H x D) | 81 cm x 6.2 cm x 9.7 cm |
| Subwoofer Dimensions (W x H x D) | 19.5 cm x 32 cm x 19.5 cm |
| Material | Plastic |
| Color | Black |
| Power Source | Cable Electric |
Warranty Information
TCL products are manufactured to the highest quality standards. For detailed warranty terms and conditions, please refer to the warranty card included with your product or visit the official TCL website. Keep your purchase receipt as proof of purchase for warranty claims.
Customer Support
If you encounter any issues or have questions regarding your TCL S643W Soundbar, please contact TCL customer support. You can find contact information on the official TCL website or through the documentation provided with your product.
For more information, visit the TCL Electronics Store.
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