1. Introduction
Thank you for choosing the XY-HT21MAX 2.1 Channel Bluetooth Digital Power Amplifier Module. This high-performance audio amplifier is designed to deliver stable and clear sound quality for a variety of audio needs. Featuring a dual-core TPA3223 chip, multi-source input options, and a powerful 2.1 channel output, it's perfect for DIY audio enthusiasts.
2. Safety Information
- Ensure the power supply voltage is within the specified range (DC 12-42V) to prevent damage.
- Avoid exposing the module to moisture, water, or extreme temperatures.
- Do not attempt to disassemble or modify the module beyond the intended assembly steps.
- Keep out of reach of children.
- Always disconnect power before making any connections or adjustments.
3. Package Contents
The product is shipped unassembled. Please ensure all components are present before beginning assembly.
- 1x XY-HT21MAX Power Amplifier Board
- 1x Screwdriver
- Necessary accessories for self-assembly (e.g., knobs, standoffs, screws)
4. Product Features
- Dual-Core Design: Equipped with a TPA3223 chip for stable and clear sound quality.
- Multi-Source Input: Supports Bluetooth (BT), AUX (3.5mm), and USB drive (U disk) audio inputs.
- High-Power Output: 2.1 Channel configuration with powerful left, right, and subwoofer outputs.
- Easy Operation: Features a master volume knob and supports multi-functional touch control.
- Quality Components: Built with high-quality materials, low-loss inductors, and black gold capacitors for reliable performance.
5. Assembly and Setup
The XY-HT21MAX module is shipped unassembled. Follow these steps for proper assembly and connection.
5.1 Assembly
Depending on the version purchased (Integrated Potentiometer, External Potentiometer, or Integrated Panel), the assembly process may vary slightly. Ensure all knobs, standoffs, and screws are correctly installed.
5.2 Connections
Refer to the connection diagram for proper wiring of speakers, power, and audio input sources.
- Speaker Connection: Connect your right, left, and subwoofer speakers to the corresponding terminals on the amplifier board. Ensure correct polarity.
- Power Supply: Connect a DC 12-42V power supply (10A or above recommended) to the DC power input jack (5.5-2.5MM).
- Audio Input: Choose your desired audio input method:
- Bluetooth: Pair your device via Bluetooth (see Operating Instructions).
- AUX: Connect an audio source using a 3.5mm AUX cable.
- USB Audio: Insert a USB flash drive with audio files.
- External Antenna (Optional): An external 2.4GHz antenna can be installed for improved Bluetooth range. The first-generation IPEX interface is already installed on the PCBA.
Video: Product demonstration showing speaker connection, power-on, Bluetooth pairing, and music playback with volume adjustment.
6. Operating Instructions
6.1 Power On/Off
Use the ON/OFF switch located on the module to power the device on or off. The indicator light will blink when powered on.
6.2 Bluetooth Pairing
- Turn on the amplifier module. The Bluetooth indicator will blink.
- On your mobile phone or device, go to Bluetooth settings.
- Search for available devices and select 'XinYi BT' to pair.
- Once paired, the indicator will stop blinking, and you can play music.
6.3 Sinilink APP Control
The module supports control via the Sinilink APP. You can change the Bluetooth name and set a pairing password through the app.
- Download and install the Sinilink APP on your mobile device.
- Connect to the amplifier module via Bluetooth as described above.
- Open the Sinilink APP.
- Navigate to the settings to change the device name and set a password. Click 'set' to confirm changes.
- The app also allows control over music playback and equalizer settings.
6.4 USB Audio Playback
- Insert a USB flash drive containing WAV, FLAC, APE, or MP3 audio files into the USB Audio port.
- Use the Sinilink APP to access the USB flash drive music list and select your desired music.
- The app also allows you to open the equalizer and adjust sound settings.
6.5 Controls
The module features several knobs for fine-tuning your audio experience:
- Master Volume: Controls the overall output volume.
- Subwoofer Frequency (FREQ): Adjusts the cutoff frequency for the subwoofer.
- Subwoofer Volume (VOL): Controls the volume level of the subwoofer.
- R&L Bass (BASS): Adjusts the bass level for the left and right channels.
- R&L Treble (TREBLE): Adjusts the treble level for the left and right channels.
- R&L Volume (VOL): Controls the volume level of the left and right channels.
The master volume knob also supports multi-function touch control:
- Click: Pause/Play
- Double-click: Next track
- Triple-click: Previous track
- Four clicks: Mode switch
- Long-press: Power on/off
7. Specifications
| Parameter | Value |
|---|---|
| Product Name | 2.1 Channel BT Digital Audio Amplifier Board |
| Product Model | XY-HT21MAX |
| Power Supply | DC 12-42V / 10A or above |
| Audio Input | Bluetooth (BT), AUX (3.5mm), USB Drive (U disk) |
| BT Audio Decoding | AAC, SBC |
| USB Lossless Decoding | WAV, FLAC, APE, MP3 |
| Channel Configuration | Left and Right Channels, Subwoofer |
| Dimensions (Integrated Panel Version) | 124mm x 142mm x 44mm (4.88in x 5.59in x 1.73in) |
| Dimensions (Integrated Potentiometer Version) | 124mm x 114mm x 32mm (4.88in x 4.49in x 1.26in) |
| Dimensions (External Potentiometer Version) | 124mm x 124mm x 32mm (4.88in x 4.88in x 1.26in) |
Output Power (Maximum)
| DC Voltage | Channel | Output Power |
|---|---|---|
| 12V | Left & Right | 10W+10W@8Ω; 20W+20W@4Ω |
| Subwoofer | 10W@8Ω; 20W@4Ω; 32W@2Ω | |
| 24V | Left & Right | 30W+30W@8Ω; 70W+70W@4Ω |
| Subwoofer | 30W@8Ω; 70W@4Ω; 150W@2Ω | |
| 36V | Left & Right | 80W+80W@8Ω; 160W+160W@4Ω |
| Subwoofer | 80W@8Ω; 160W@4Ω; 350W@2Ω | |
| 40V | Left & Right | 100W+100W@8Ω; 200W+200W@4Ω |
| Subwoofer | 100W@8Ω; 200W@4Ω; 400W@2Ω |
8. Maintenance
- Cleaning: Use a dry, soft cloth to clean the module. Do not use liquid cleaners or solvents.
- Storage: Store the module in a cool, dry place away from direct sunlight and high humidity.
- Ventilation: Ensure adequate ventilation around the module to prevent overheating. The integrated silent fan helps with heat dissipation.
- Handling: Handle the module with care to avoid damaging electronic components.
9. Troubleshooting
- No Sound:
- Check all speaker connections for proper wiring and polarity.
- Ensure the power supply is correctly connected and providing the specified voltage.
- Verify the audio input source is active and playing.
- Adjust volume knobs (Master, R&L, Subwoofer) to appropriate levels.
- Bluetooth Disconnection/Failure to Pair:
- Ensure the amplifier is powered on and the Bluetooth indicator is blinking.
- Turn off and on Bluetooth on your mobile device.
- Try restarting both the amplifier and your mobile device.
- Ensure no other devices are actively connected to the amplifier's Bluetooth.
- If using the Sinilink APP, ensure it has necessary permissions and is updated.
- Distorted Sound:
- Check speaker impedance compatibility with the amplifier's output.
- Reduce the input volume from your audio source.
- Adjust the bass and treble controls on the amplifier.
- Ensure the power supply is stable and sufficient.
10. User Tips
- For optimal sound quality, use high-quality audio cables and speakers that match the amplifier's power output.
- Experiment with the subwoofer frequency and volume controls to find the best balance for your listening environment and speaker setup.
- When using the Sinilink APP, explore the equalizer settings to customize the sound profile to your preference.
- Consider installing an external 2.4GHz antenna if you experience frequent Bluetooth disconnections or limited range.
11. Support
For further detailed information, diagrams, or advanced troubleshooting, please refer to the official user manual PDF:
If you require additional assistance, please contact the seller or manufacturer's support channels.
