1. Important Safety Instructions
Please read these safety instructions carefully before operating the soundbar and retain them for future reference. This product is designed and manufactured to meet strict quality and safety standards.
- Power Source: Ensure the power supply voltage matches the rating label on the soundbar.
- Ventilation: Do not block any ventilation openings. Maintain adequate space around the soundbar for proper airflow.
- Water and Moisture: Do not expose the soundbar to rain, moisture, or dripping/splashing liquids. Do not place objects filled with liquids, such as vases, on the apparatus.
- Heat: Do not place the soundbar near heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
- Cleaning: Unplug the soundbar from the wall outlet before cleaning. Use a dry cloth only. Do not use liquid cleaners or aerosol cleaners.
- Servicing: Do not attempt to service this product yourself. Refer all servicing to qualified service personnel.
- Placement: Place the soundbar on a stable, flat surface or mount it securely to a wall following the provided instructions.
2. Package Contents
Verify that all items listed below are included in your package:
- SHARP HT-SB121 Soundbar
- Remote Control (with 2 AAA batteries)
- Power Cable
- Wall Mount Kit (brackets, screws, template)
- Quick Start Guide
- Warranty Card
3. Product Overview
3.1 Front View

The front of the soundbar features a protective grille covering the speakers. Status indicators are located behind the grille, providing visual feedback on the current input source and operational status.
3.2 Top Panel Controls

The top panel provides essential controls for direct operation:
- Power Button (⏻): Press to turn the soundbar on or off.
- Input/Source Button (⏸/*): Press to cycle through available input sources (HDMI ARC, Optical, Bluetooth, AUX, USB).
- Volume Down Button (-): Decreases the volume level.
- Volume Up Button (+): Increases the volume level.
3.3 Rear Panel Connections

The rear panel houses all necessary connection ports:
- HDMI ARC (TV): For connecting to a TV's HDMI ARC port.
- OPTICAL: For connecting to a TV or other device via an optical digital cable.
- USB (5V * 500mA): For USB media playback.
- AUX IN: For connecting analog audio devices via a 3.5mm stereo jack.
- AC IN: For connecting the power cable.
4. Setup
4.1 Placement

The soundbar can be placed on a flat surface, such as a TV stand, or mounted on a wall. Ensure the soundbar is positioned centrally below your television for the best audio experience. Do not obstruct the front grille or rear ports.
4.2 Connecting to a TV
Choose one of the following connection methods:
- HDMI ARC (Recommended):
- Connect an HDMI cable (not included) from the HDMI ARC port on your TV to the HDMI ARC (TV) port on the soundbar.
- Ensure your TV's HDMI ARC/CEC function is enabled in its settings. This allows your TV remote to control the soundbar's power and volume.
- Optical:
- Connect an optical digital cable (not included) from the OPTICAL OUT port on your TV to the OPTICAL port on the soundbar.
- Select 'Optical' as the audio output on your TV.
- AUX IN:
- Connect a 3.5mm audio cable (not included) from the headphone jack or AUX OUT port on your TV to the AUX IN port on the soundbar.
4.3 Power Connection
- Connect the power cable to the AC IN port on the soundbar.
- Plug the other end of the power cable into a wall outlet.
5. Operating Instructions
5.1 Power On/Off
- Press the Power button (⏻) on the soundbar or the remote control to turn the unit on or off.
5.2 Input Selection
- Press the Input/Source button (⏸/*) on the soundbar or the remote control repeatedly to cycle through the available input sources: HDMI ARC, Optical, Bluetooth, AUX, USB.
- The corresponding indicator light on the soundbar will illuminate to show the selected input.
5.3 Volume Control
- Press the Volume Up (+) or Volume Down (-) buttons on the soundbar or remote control to adjust the volume.
5.4 Bluetooth Pairing
- Turn on the soundbar and select the Bluetooth input. The Bluetooth indicator will flash, indicating it is in pairing mode.
- On your Bluetooth-enabled device (smartphone, tablet, etc.), search for available Bluetooth devices.
- Select "SHARP HT-SB121" from the list. Once connected, the Bluetooth indicator on the soundbar will glow steadily.
5.5 USB Playback
- Insert a USB flash drive into the USB port on the rear of the soundbar.
- Select the USB input source. The soundbar will automatically begin playing compatible audio files from the USB drive.
5.6 Roku TV Ready Functionality
- The SHARP HT-SB121 is certified Roku TV Ready, allowing for seamless integration with Roku TVs.
- When connected via HDMI ARC to a Roku TV, the soundbar can be easily set up and controlled directly through the Roku TV's sound settings and remote control.
6. Wall Mounting
The soundbar can be mounted on a wall using the provided wall mount kit. Follow these general guidelines:
- Preparation: Use the included wall mounting template to mark the drilling positions on the wall. Ensure the wall material can support the weight of the soundbar.
- Drilling: Drill pilot holes at the marked positions.
- Mounting Brackets: Secure the wall mounting brackets to the wall using appropriate screws and wall anchors (if necessary).
- Attach Soundbar: Carefully align the soundbar with the mounted brackets and secure it in place.
- Cable Management: Route cables neatly to avoid strain or damage.
For detailed instructions, refer to the specific wall mounting guide included with your product.
7. Troubleshooting
If you encounter issues with your soundbar, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Power cable not connected; Wall outlet not active | Ensure power cable is securely connected; Try a different wall outlet. |
| No sound | Incorrect input selected; Volume too low; Mute activated; Incorrect TV audio settings | Select correct input; Increase volume; Deactivate mute; Check TV audio output settings (e.g., set to PCM for Optical). |
| Bluetooth not connecting | Soundbar not in pairing mode; Device too far; Previously paired device connected | Ensure soundbar is in Bluetooth pairing mode (flashing indicator); Move device closer; Disconnect from other Bluetooth devices. |
| Remote control not working | Batteries depleted; Obstruction between remote and soundbar | Replace AAA batteries; Remove any obstructions; Ensure remote is pointed at the soundbar's sensor. |
8. Specifications

Key technical specifications for the SHARP HT-SB121 Soundbar:
- Model Name: HT-SB121
- Audio Channels: 2.0 Channel
- Maximum Speaker Power Output: 120 Watts
- Connectivity Technology: Bluetooth 5.3, HDMI ARC, Optical, USB, AUX
- Audio Output Mode: Stereo
- Audio Encoding Support: DTS, Dolby Atmos, Dolby Digital Plus, Dolby TrueHD 5.1 (via HDMI ARC)
- Mounting Type: Wall or Table Top
- Compatible Devices: Televisions, Laptops, Smartphones, Tablets
- Item Dimensions (D x W x H): 9.1 cm x 55 cm x 6.5 cm
- Item Weight: 1.25 Kilograms
- Remote Control Batteries: 2 x AAA (included)
9. Maintenance
To ensure the longevity and optimal performance of your soundbar, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to wipe the exterior surfaces of the soundbar. Do not use abrasive cleaners, waxes, or solvents as they may damage the finish.
- Dust: Regularly dust the grille and ventilation openings to prevent dust buildup, which can affect performance.
- Avoid Liquids: Keep the soundbar away from liquids and excessive moisture. If liquid spills on the unit, immediately unplug it and contact qualified service personnel.
- Storage: If storing the soundbar for an extended period, unplug it from the power outlet and store it in a cool, dry place.
10. Warranty and Support
This SHARP HT-SB121 Soundbar comes with a limited warranty. Please refer to the included Warranty Card for detailed terms and conditions, including warranty period and coverage.
For technical support, troubleshooting assistance, or warranty claims, please contact your local Sharp customer service or the retailer from whom you purchased the product. Keep your proof of purchase for warranty validation.
You may also visit the official Sharp website for additional resources, FAQs, and contact information.





