Introduction
Thank you for choosing the Oakcastle SB40 Soundbar. This manual provides essential information for setting up, operating, and maintaining your new soundbar. Please read these instructions carefully before use and retain them for future reference.
The Oakcastle SB40 is a compact 60W 2.0 stereo soundbar designed to enhance your audio experience for televisions, computers, and other compatible devices. It features multiple connectivity options including Bluetooth, HDMI ARC, Optical, and AUX input, along with a convenient remote control and wall mounting capability.
What's in the Box
Carefully unpack all items from the box. Ensure all components listed below are present and in good condition.
- Oakcastle SB40 Bluetooth Soundbar
- Remote Control (with 2 AAA batteries)
- Wall Mounting Kit (2 screws, 2 wall plugs, 2 brackets, mounting template)
- Optical Cable
- AUX to AUX Cable
- User Manual

Image: Contents of the Oakcastle SB40 Soundbar package, including the soundbar, remote, cables, and wall mount kit.
Product Overview
Soundbar Features

Image: Internal view of the Oakcastle SB40 Soundbar revealing its two high-fidelity wide-band speakers.
The SB40 features two high-fidelity wide-band speakers, delivering 60W of clear and dynamic audio output.
Rear Panel Connections
The rear panel of the soundbar provides various input ports for connecting to your audio sources.

Image: Close-up of the Oakcastle SB40 Soundbar's rear panel showing HDMI ARC, Optical, and AUX input ports.
- HDMI ARC: For connecting to a TV with an HDMI ARC port. Allows TV remote control of soundbar volume.
- OPTICAL: For connecting to devices with an optical audio output.
- AUX IN: For connecting to devices with a 3.5mm audio output.
- AC 100-240V: Power input.
Setup
Connecting to Your TV or Audio Source
Before connecting, ensure both the soundbar and your audio source (TV, PC, etc.) are powered off.
1. HDMI ARC Connection (Recommended)
- Connect one end of an HDMI cable (not included) to the HDMI ARC port on your TV.
- Connect the other end of the HDMI cable to the HDMI ARC port on the soundbar.
- Ensure your TV's HDMI ARC function is enabled in its audio settings.
2. Optical Connection
- Connect the supplied optical cable to the OPTICAL port on the soundbar.
- Connect the other end of the optical cable to the optical audio output port on your TV or audio source.
3. AUX Connection
- Connect the supplied AUX cable to the AUX IN port on the soundbar.
- Connect the other end of the AUX cable to the 3.5mm audio output (headphone jack) on your TV, PC, or other audio source.

Image: The Oakcastle SB40 Soundbar connected to a TV, with a smartphone and remote control nearby.
Operating Instructions
Power On/Off
Connect the soundbar to a power outlet using the supplied power cable. Press the Power button on the soundbar or the remote control to turn it on or off.
Source Selection
Press the 'Input' button on the remote control or the 'Mode' button on the soundbar to cycle through the available input sources: HDMI ARC, Optical, AUX, and Bluetooth.
Bluetooth Pairing
- Switch the soundbar to Bluetooth mode. The LED indicator will flash.
- On your Bluetooth device (e.g., smartphone), search for 'Oakcastle SB40' in the Bluetooth settings.
- Select 'Oakcastle SB40' to pair. Once connected, the LED indicator will stop flashing.
- You can now stream audio wirelessly from your device to the soundbar.
Using the Remote Control
The included remote control provides full functionality for your soundbar.

Image: The Oakcastle SB40 Soundbar remote control with various function buttons.
- Power: Turn the soundbar on or off.
- Input: Select the audio source (HDMI ARC, Optical, AUX, Bluetooth).
- Volume +/-: Adjust the main volume level.
- Bass +/-: Adjust the bass level.
- Mute: Mute or unmute the sound.
- EQ Modes (Music, Movie, Dialog, Night, 3D): Select preset equalizer settings for different audio experiences.
- Playback Controls (for Bluetooth): Play/Pause, Previous/Next Track.
Wall Mounting
The Oakcastle SB40 Soundbar can be wall-mounted using the included kit. Ensure the wall material is suitable for mounting and can support the weight of the soundbar.

Image: Close-up of the wall mount bracket for the Oakcastle SB40 Soundbar.
- Use the mounting template to mark the positions for drilling on the wall.
- Drill two holes at the marked positions. Insert the wall plugs into the holes.
- Attach the two wall mount brackets to the soundbar using the provided screws.
- Align the soundbar's brackets with the wall plugs and secure it to the wall.

Image: Oakcastle SB40 Soundbar wall-mounted below a television.
Maintenance
To ensure the longevity and optimal performance of your Oakcastle SB40 Soundbar, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the surface of the soundbar. Do not use liquid cleaners, aerosols, or abrasive materials, as these can damage the finish.
- Placement: Avoid placing the soundbar in direct sunlight, near heat sources, or in areas with high humidity or dust.
- Ventilation: Ensure adequate ventilation around the soundbar to prevent overheating. Do not block any ventilation openings.
- Power: Disconnect the power cable from the wall outlet if the soundbar will not be used for an extended period.
Troubleshooting
If you encounter any issues with your soundbar, refer to the table below for common problems and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Power cable not connected; Power outlet not active. | Ensure power cable is securely connected. Test the power outlet with another device. |
| No sound | Incorrect input source selected; Volume too low; Cables not connected properly; TV audio output settings incorrect. | Select the correct input source. Increase volume. Check all cable connections. Adjust TV audio output to PCM or external speakers. |
| Bluetooth pairing fails | Soundbar not in pairing mode; Device too far; Interference. | Ensure soundbar is in Bluetooth pairing mode. Move device closer to soundbar. Avoid other wireless devices. |
| Remote control not working | Batteries depleted; Obstruction between remote and soundbar. | Replace remote control batteries (2x AAA). Ensure no objects block the remote's signal path to the soundbar. |
Specifications
Detailed technical specifications for the Oakcastle SB40 Soundbar.
| Feature | Specification |
|---|---|
| Brand | Oakcastle |
| Model Name | Oakcastle SB40 |
| Max Speaker Output Power | 60 Watts |
| Audio Output Mode | Stereo (2.0 Channels) |
| Frequency Response | 250 KHz |
| Connectivity Technology | Auxiliary, Bluetooth, HDMI ARC, Optical |
| Wireless Technology | Bluetooth |
| Input Voltage | 240 Volts (AC) |
| Mounting Type | Wall Mount |
| Material | Plastic |
| Color | Black |
| Control Method | Remote Control |
| Item Dimensions (D x W x H) | 40D x 9W x 6H centimeters |
| Compatible Devices | Smartphone, television, laptop, tablet, game console |
Warranty and Support
Warranty Information
The Oakcastle SB40 Soundbar comes with a 3-Year Extended Warranty. Registration is required to activate the extended warranty. Please refer to the warranty card included in your package or visit the official Oakcastle website for registration details.
Technical Support
Should you require further assistance or encounter issues not covered in this manual, please contact Oakcastle customer support. Our team is available to provide expert technical assistance.
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