VAORLO TX40 Bluetooth 5.2 Audio Transmitter User Manual

1. Introduction

The VAORLO TX40 is a high-performance Bluetooth 5.2 audio transmitter designed to bring wireless audio capabilities to your non-Bluetooth devices. Featuring the advanced Qualcomm QCC3040 chip, it supports a wide range of audio codecs including AptX Adaptive, AptX HD, and AptX Low Latency, ensuring high-fidelity 24-bit audio with minimal delay. This adapter is ideal for connecting your TV, PC, laptop, or gaming consoles like PS4/PS5 and Nintendo Switch to Bluetooth headphones or speakers, and also supports hands-free calls.

Image 1: VAORLO TX40 Bluetooth 5.2 Transmitter with Type-C adapter, highlighting AptX HD, Adaptive, Low Latency, Handsfree Call, and compatibility with various devices.

2. Specifications

Image 2: Product parameters table for model BLS-TX40 and a diagram showing its dimensions (17mm length, 15mm width, 7mm height).

3. Package Contents

Standard Edition:

• 1x TX40 Qualcomm Bluetooth Audio Transmitter
• 1x Type-C Adapter
• 1x User's Manual
• 1x Retail Package

Image 3: TX40 Standard Edition with Type-C adapter.

Extension Edition:

• 1x TX40 Qualcomm Bluetooth Audio Transmitter
• 1x Type-C Adapter
• 1x User's Manual
• 1x Retail Package
• 1x USB Extension Cable

Note: Computer software assistants are not supported for either edition.

4. Setup and Initial Pairing

The TX40 is designed for plug-and-play operation, requiring no drivers for most supported systems.

Image 4: TX40 Bluetooth transmitter plugged into a desktop PC's USB port, emphasizing driver-free support for Windows, macOS, Linux, and Android.

4.1 Connecting the TX40

1. Plug the TX40 into a compatible USB port on your source device (e.g., TV, PC, PS5, Nintendo Switch dock).
2. If using with a Type-C port, attach the provided Type-C adapter to the TX40 first, then plug it into the device.

Image 5: Diagram illustrating the connection flow: Sound Source (Nintendo Switch, PC, Laptop) → TX40 Transmitter → Receiving Device (Bluetooth Headphones, Earbuds, Speakers).

4.2 Pairing the First Device

1. Upon power-on, the TX40 defaults to reconnect mode, indicated by a slow flashing blue light.
2. If no previous device is found within 20 seconds, it will automatically enter search pairing state, indicated by alternating red and blue lights.
3. Put your Bluetooth receiving device (headphones, speakers, etc.) into pairing mode.
4. The TX40 will automatically detect and pair with your device. Once successfully paired, the LED indicator will remain steadily on, and its color will change according to the active audio codec (see Section 5.1 for details).

4.3 Pairing a Second Device (Dual Stream)

The TX40 supports connecting two Bluetooth receiving devices simultaneously.

1. First, ensure your initial device is successfully paired and connected.
2. Turn off the first paired Bluetooth device.
3. Unplug and re-plug the TX40 transmitter from its USB port.
4. Put your second Bluetooth receiving device into pairing mode.
5. The TX40 will automatically pair with the second device.
6. After successful pairing, turn on the first Bluetooth device. The TX40 will automatically reconnect to both devices, supporting dual audio output.

Image 6: Illustration of automatic memory connection, where the TX40 reconnects to a previously paired device (smart speaker) after initial setup. Up to 8 device pairing memories can be saved.

5. Operation

5.1 Indicator Status and Audio Codec

The LED indicator on the TX40 provides visual feedback on its status and the active audio codec:

• Search for pairing: Flashing red and blue alternately
• Connection status (reconnect mode): Blue light flashes slowly
• Pairing successful: LED is always on

Audio Format Indicator:

• SBC: Steady blue
• Aptx: Steady cyan
• Aptx-LL: Steady white
• Aptx-HD: Steady green
• Aptx-Adaptive: Steady orange

Image 7: Detailed description of the 5 color indicators on the TX40, explaining their meaning for loopback, pairing, and different audio codecs (SBC, Aptx, Aptx LL, Aptx HD, Aptx adaptive).

5.2 Device Compatibility and Usage Scenarios

• PC/Laptop: Plug directly into a USB port. Driver-free for Windows 7-10, macOS, Linux, Android.
• Smart TV: Connect to a USB port. Bluetooth speakers, headsets, and microphones can be connected. Compatible with mainstream smart TVs like Hisense, Xiaomi, Hongmi, TCL, Sony, Skyworth. Note: TVs that do not support USB audio output cannot be used.
• TV Box: For Android 4.2 and above, it's driver-free with automatic pairing. Automatically pairs and connects Bluetooth headsets or speakers. Examples include Xiaomi box, dangbei box, Taijie.
• Nintendo Switch: Supports TV mode (direct USB connection to dock) and handheld mode (requires an additional adapter).
• PS4/PS5: Supports audio transmission and voice chat. Can achieve 2x volume enhancement on PS4/PS5 consoles.

Image 8: Detailed Smart TV usage, showing the TX40 connected to a TV and transmitting to Bluetooth speakers/headsets/microphones. Lists compatible TV brands.

Image 9: PS4/PS5 voice party support, confirming audio transmission and voice party functionality for PS4, PS4 Slim, PS4 Pro, and PS5.

6. Care and Warnings

• This product only transmits audio signals. It cannot be used for connecting Bluetooth keyboards/mice or for file transfer.
• Do not strike, disassemble, or pierce the equipment.
• Avoid using in water, damp, or high-temperature environments to prevent malfunction or fire.
• Do not use this equipment in places where it is prohibited by national regulations.
• Do not throw this product into water, other liquids, or fire, as this may cause permanent damage.
• Non-professionals should not attempt to modify this equipment, as it may cause permanent damage.
• This product is not suitable for Mac systems if you require computer software assistant functionality.

7. Troubleshooting

7.1 No Sound After Successful Pairing

1. Check the volume level of your receiving device (headphones, speakers).
2. For PS5: Go to Settings (PS4 Peripherals) > Sound > Output Device, and select "USB Headset".
3. For Xiaomi TV or Internet TV boxes: Audio output usually switches automatically.
4. For Hisense Telecom TVs: Navigate to System Equipment > Audio Output, and select "USB Audio Device".
5. For WIN10 computers: Go to Settings > System > Sound > Output device selection, and choose "TYL-DONGLE". If you do not require call functionality, ensure "TYL.DONGLE" is NOT selected in the input device settings to avoid affecting sound quality.

7.2 Pairing Unsuccessful

1. Check the TX40 indicator light: If it is steadily on, it means the transmitter is already paired with another device. To pair a new device, you must first turn off the previously connected receiving device. Then, unplug and re-plug the TX40 to reset it into pairing mode (alternating red and blue lights).
2. Verify receiving device pairing mode: Ensure your Bluetooth headphones or speakers are actively in their pairing mode.
3. Reduce interference: Try to keep the TX40 away from devices that emit strong wireless signals, such as wireless routers, which can cause interference.

8. User Tips

• PS5 Usage: For optimal audio and voice chat on PS5, ensure you select 'USB Headset' as the output device in the console's sound settings after plugging in the TX40. This enables both game audio and microphone functionality through your Bluetooth headset.
• Adaptive Codec Compatibility: To fully utilize AptX Adaptive for better sound quality and lower delay, ensure your Bluetooth headphones or speakers are equipped with Qualcomm QCC 304x/51x series chips or later.
• Automatic Reconnection: The TX40 remembers up to 8 paired devices. After initial setup, it will automatically reconnect to previously paired devices when powered on and within range.

9. Warranty and Support

For warranty information and technical support, please refer to the documentation provided with your purchase or contact the retailer. Keep your proof of purchase for any warranty claims.