Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your XINYI Sini Audio Stereo Bluetooth Digital Power Amplifier C50L. Please read this manual carefully before use to ensure optimal performance and longevity of the product.
Setup
Package Contents
- XINYI Sini Audio C50L Amplifier Module
- DC Power Adapter (gift)
- Heat Sink (gift)
Physical Installation
The amplifier module requires assembly of its protective casing. Follow the diagram below for proper component placement:
Wiring Connections
Connect the power supply, speakers, and audio input sources as shown in the diagram:
- Power Supply: Connect a DC 5-24V power source. Ensure the power supply output current is greater than the amplifier's output current to avoid sound quality issues.
- Speakers: Connect your passive speakers to the SPKL+ / SPKL- (Left Channel) and SPKR+ / SPKR- (Right Channel) terminals.
- Audio Output: For active speakers, use the 3.5mm audio output jack.
- USB Audio Input: Insert a USB disk (FAT32 format, max 32GB) or connect a device for USB sound card functionality.
- AUX Audio Input: Connect an external audio source via the AUX IN jack.
Operating Instructions
Power On/Off and Playback Control
The amplifier features a rotary encoder knob for intuitive control:
- Power On/Off: Long press the rotary knob.
- Volume Control: Rotate the knob for 360-degree stepless volume adjustment.
- Play/Pause: Short press the rotary knob to toggle playback.
Input Mode Switching
The amplifier automatically switches input modes based on the connected source:
- The default input mode is Bluetooth.
- Connecting an AUX cable, inserting a U disk, or connecting a device for USB sound card functionality will automatically switch the input to that source.
- USB sound card function is plug-and-play, requiring no drivers.
- For U disk playback, ensure files are in MP3 or WAV format. WAV files must have a sample rate of 44.1kHz or less.
Bluetooth Connection
To connect your device via Bluetooth:
- Power on the amplifier. The blue LED will flash rapidly, indicating it is in Bluetooth pairing mode.
- On your mobile phone, search for Bluetooth devices and select "XinYi" to connect.
- Once successfully connected, the blue LED will remain steadily lit.
- When playing music, the blue LED will flash slowly.
APP Control
The amplifier supports mobile APP control for both Android and iOS systems, offering a visualized operation interface:
- Control volume and sound effects.
- Navigate tracks (previous/next).
- Play/pause functionality.
- Select different playback modes.
Maintenance
To ensure the longevity and optimal performance of your amplifier:
- Keep the device clean and free from dust.
- Avoid placing the amplifier in a fully enclosed metal casing, as this can interfere with the Bluetooth signal. If a metal enclosure is necessary, ensure the antenna is extended outside the enclosure.
Troubleshooting
Common Issues and Solutions
- No Sound:
- Check if the power supply is connected correctly and within the DC 5-26V range.
- Ensure the audio input source is active and properly connected.
- Verify speaker connections.
- Humming Sound (when not playing):
- This often indicates an insufficient power supply. Try using a power supply with higher current (e.g., 2A or more for 12V/24V).
- Distorted or Cracking Sound:
- The power supply might be insufficient for the speakers. Use a larger power supply, especially for 50W speakers (e.g., >26V).
- Poor heat dissipation can also cause this. Ensure the heat sink is properly installed and there is adequate ventilation.
- Reduce the volume.
- Bluetooth Connection Issues:
- Ensure the amplifier is within 15 meters of your device and there are no major obstructions.
- Interference from other wireless devices (like Wi-Fi routers) can affect the signal. Try moving the amplifier away from such devices.
- Make sure you are connecting to "XinYi" and not "Sinilink-APP" in your phone's Bluetooth settings. If connected to the wrong one, unpair and search again.
Specifications
| Feature | Description |
|---|---|
| Brand | XINYI Sini Audio |
| Model | XY-C50L |
| Channel | Left and right dual channel (stereo) |
| Adaptive Speaker Impedance | 0Ω-200W, 4Ω, 8Ω, 16Ω |
| Bluetooth Version | 5.0 |
| Power Supply Voltage | DC 5-24V (higher voltage, greater output power) |
| Transmission Distance | 15 meters (unobstructed) |
| Protection Mechanism | Power reverse connection protection, short circuit protection, self-recovery overheat protection |
| APP Function | Mobile APP control (supports Android and iOS systems) |
Output Power (per channel)
Note: The output current of the power supply must be greater than the amplifier's output current, otherwise sound quality will be affected.
| Voltage | 8Ω Speakers | 4Ω Speakers |
|---|---|---|
| 12V | 15W + 15W | 20W + 20W |
| 15V | 18W + 18W | 30W + 30W |
| 19V | 32W + 32W | 45W + 45W |
| 24V | 40W + 40W | 50W + 50W |
Dimensions
- Length: 56mm
- Width: 50mm
- Height: 19mm (excluding knob)
- Package Weight: 61g
User Tips
- Ensure proper impedance matching between the amplifier and your speakers for optimal sound quality and to prevent damage.
- For best Bluetooth performance, keep the amplifier away from other wireless devices like Wi-Fi routers.
- Always use a stable power supply within the specified voltage range to avoid performance issues or damage.
Warranty and Support
For warranty information, technical support, or any product-related inquiries, please contact the seller directly or refer to the official product page for available resources. Keep your purchase records for any warranty claims.
