1. Introduction
Thank you for purchasing the BESTISAN S9920 100Watt 40 Inch Soundbar. This manual provides essential information for setting up, operating, and maintaining your new soundbar. Please read this manual thoroughly before use and retain it for future reference.
Important Safety Instructions
- Do not expose this appliance to dripping or splashing.
- Do not place objects filled with liquids, such as vases, on the apparatus.
- Ensure proper ventilation and do not block any ventilation openings.
- Use only attachments/accessories specified by the manufacturer.
- Unplug this apparatus during lightning storms or when unused for long periods.
- Refer all servicing to qualified service personnel.
2. What's in the Box
Please check that all items listed below are included in your package:
- BESTISAN S9920 Soundbar
- Remote Control
- Quick Start Guide
- Mount Screws and Wall Mount Brackets
- Power Adapter
- 3.5mm Audio Cable
- Digital Optical Cable
- Wall Mount Template

Image: All components included in the BESTISAN S9920 Soundbar package.
3. Product Overview
Familiarize yourself with the soundbar's features and controls.
Front View

Image: The front of the soundbar showing the speaker grille and the BESTISAN logo, with the remote control positioned in front.
Side Panel Controls

Image: Close-up of the right side panel of the soundbar, displaying the power button, volume up/down buttons, and play/pause button.
Rear Connections

Image: The rear panel of the soundbar showing various input ports including HDMI (ARC), Optical, USB, AUX IN, AUX OUT, and DC power input.
4. Setup and Connections
Follow these steps to connect your soundbar to your television or other audio sources.
Power Connection
- Connect the power adapter to the DC input port on the soundbar.
- Plug the power adapter into a wall outlet.
Connecting to TV (Recommended)
The BESTISAN S9920 supports multiple wired connections:
- HDMI (ARC): For optimal audio quality and control, connect an HDMI cable from the HDMI (ARC) port on your soundbar to the HDMI (ARC) port on your TV. Ensure your TV's HDMI-CEC feature is enabled.
- Optical: Connect an optical cable from the OPTICAL port on your soundbar to the Optical Digital Audio Out port on your TV. Select 'Optical' as the input source on the soundbar.
- AUX: Use the 3.5mm audio cable to connect the AUX IN port on the soundbar to the headphone jack or AUX OUT port on your TV or other audio device. Select 'AUX' as the input source.
- USB: Insert a USB drive into the USB port for playing audio files directly from the drive.

Image: Detailed view of the soundbar's rear input ports for HDMI (ARC), Optical, USB, and AUX connections.
Bluetooth Connection
- Power on the soundbar.
- Press the 'BT' button on the remote control or the 'Mode' button on the soundbar to switch to Bluetooth mode. The indicator light will flash.
- On your mobile device, enable Bluetooth and search for 'BESTISAN S9920'.
- Select 'BESTISAN S9920' to pair. Once connected, the indicator light will stop flashing and remain solid.

Image: A smartphone screen showing Bluetooth settings, with the BESTISAN S9920 available for pairing, illustrating the wireless connection process.
5. Operating Instructions
Learn how to use your soundbar's features for an enhanced audio experience.
Basic Operation
- Power On/Off: Press the power button on the soundbar or remote control.
- Volume Control: Use the Volume Up (+) and Volume Down (-) buttons on the soundbar or remote.
- Input Source Selection: Press the 'Mode' button on the soundbar or the dedicated input buttons (HDMI, Optical, AUX, USB, BT) on the remote to switch between audio sources.
Equalizer (EQ) Modes
The soundbar features three distinct EQ modes to optimize audio for different content types:
- Movie Mode: Enhances surround sound and bass for an immersive cinematic experience.
- Music Mode: Provides balanced audio with rich bass and clear treble for music playback.
- Dialogue Mode: Optimizes vocal clarity, making speech easier to understand, ideal for news or talk shows.
Use the dedicated buttons on the remote control to switch between these modes.

Image: Visual representation of the three equalizer modes (Music, Movie, Dialogue) and their corresponding icons, indicating how they tailor the sound experience.
Remote Control Functions
The remote control provides full functionality for your soundbar:
- Power On/Off
- Volume Up/Down
- Mute
- Input Source Selection (HDMI, Optical, AUX, USB, BT)
- EQ Mode Selection (Movie, Music, Dialogue)
- Bass and Treble Adjustment (not compatible with universal or TV remotes)
- Play/Pause (for Bluetooth/USB modes)
- Previous/Next Track (for Bluetooth/USB modes)

Image: The soundbar shown with its remote control, emphasizing that both the soundbar's side panel and the remote can be used for control.
6. Maintenance
Proper care will ensure the longevity of your soundbar.
- Cleaning: Use a soft, dry cloth to clean the surface of the soundbar. Do not use liquid cleaners or aerosol sprays.
- Storage: If storing the soundbar for an extended period, unplug it from the power outlet and store it in a cool, dry place.
- Ventilation: Ensure the soundbar has adequate ventilation and is not covered, to prevent overheating.
7. Troubleshooting
If you encounter issues, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Power cord not connected; Power outlet not working | Ensure power cord is securely connected; Try a different power outlet. |
| No sound | Incorrect input source selected; Volume too low; Cables not connected properly | Select the correct input source (HDMI, Optical, AUX, BT); Increase volume; Check all cable connections. |
| Bluetooth pairing failed | Soundbar not in pairing mode; Device too far; Interference | Ensure soundbar is in BT pairing mode (flashing light); Move device closer; Turn off other Bluetooth devices. |
| Remote control not working | Batteries low/dead; Obstruction between remote and soundbar | Replace batteries; Remove any obstructions; Ensure remote is pointed at the soundbar's sensor. |
| Distorted sound | Volume too high; Poor audio source quality | Lower the volume; Try a different audio source or cable. |
8. Specifications
| Feature | Detail |
|---|---|
| Model Name | S9920 |
| Speaker Type | Soundbar |
| Speaker Maximum Output Power | 100 Watts |
| Connectivity Technology | Bluetooth, HDMI |
| Wireless Communication Technology | Bluetooth |
| Bluetooth Range | 10 Meters |
| Audio Output Mode | Stereo |
| Surround Sound Channel Configuration | 2.0 |
| Product Dimensions | 39.7"D x 3.93"W x 3.93"H |
| Item Weight | 8.2 Pounds |
| Material | Plastic |
| Mounting Type | Wall Mount |
| Included Components | Soundbar, Cables, Power Cord |
9. Warranty and Support
Limited Warranty
The BESTISAN S9920 Soundbar comes with a limited warranty of up to 12 months from the date of purchase. This warranty covers manufacturing defects and workmanship under normal use. Please retain your proof of purchase for warranty claims.
Customer Support
For any questions, technical assistance, or warranty inquiries, please contact our customer support team. We offer 24/7 email assistance to help you with your product.
Please refer to the contact information provided on the product packaging or the official BYL website for the most current support details.





