TDA7850 4-Channel Car Audio Amplifier Board | 4×50W HiFi Digital Module for DC 12V-16V Vehicle Sound System Upgrade

Key Advantages

1. High-Power 4-Channel Output (4×50W RMS)
   • Delivers 50W RMS per channel (4Ω load) for clear, distortion-free audio, ideal for powering 4 full-range speakers or 2 speakers + 1 subwoofer (with bridge mode).
2. TDA7850 HiFi-Grade Chipset
   • Features low THD+N (≤0.05%) and high SNR (≥95dB), ensuring minimal noise and crisp sound reproduction for music, podcasts, or movies.
3. Flexible 2/4-Channel Switching
   • Easily toggle between 4-channel stereo (for front/rear speakers) or 2-channel bridge mode (for higher power to a single subwoofer) via jumper settings.
4. Wide Input Voltage Range (DC 12V–16V)
   • Compatible with most car batteries (12V) and aftermarket power supplies (up to 16V), supporting stable operation during engine starts or voltage fluctuations.
5. Compact & Durable Design
   • Dimensions: 128mm (L) × 86mm (W) × 29mm (H) fit standard car audio enclosures or under-seat installations.
   • Weight: 238g ensures lightweight integration without sacrificing build quality.
6. Low Heat Generation (Class-AB Efficiency)
   • Efficient heat dissipation design reduces the need for external cooling fans, suitable for enclosed spaces like car trunks or dashboards.
7. Overload/Short-Circuit Protection
   • Built-in safeguards prevent damage from accidental speaker wire shorts or excessive power draw, extending the lifespan of both the amplifier and speakers.
8. Easy Installation with Pre-Soldered Terminals
   • Labelled connectors for power input, speaker output, and channel switching simplify wiring, even for beginners.

Technical Specifications

• Model: XH-M180
• Chipset: TDA7850
• Channels: 4 (switchable to 2-channel bridge mode)
• Power Output: 4×50W RMS (4Ω, 1kHz, THD=10%)
• Input Voltage: DC 12V–16V (recommended 14.4V for full power)
• Output Impedance: 4Ω–8Ω (per channel)
• Frequency Response: 20Hz–20kHz
• THD+N: ≤0.05% (1W, 1kHz)
• SNR: ≥95dB
• Operating Temperature: -20°C–85°C

Target Applications

1. Car Audio System Upgrades
   • Replace factory amplifiers to power aftermarket speakers (e.g., 6.5-inch coaxials or component sets) for enhanced clarity and volume.
2. Motorcycle/Boat Audio Systems
   • Install in compact spaces to drive 4 speakers with sufficient power, even in noisy environments.
3. Home DIY Audio Projects
   • Repurpose as a desktop or bookshelf speaker amplifier when paired with a 12V DC power adapter (e.g., for computer speakers or gaming setups).
4. Commercial Vehicle Audio
   • Upgrade trucks, vans, or buses with multi-zone audio (e.g., driver’s area + passenger compartment) using the 4-channel configuration.
5. Subwoofer Integration
   • Use bridge mode (2 channels combined) to drive a single 100W RMS subwoofer for deep bass in cars or small venues.
6. Educational/Experimental Use
   • Study audio amplifier design principles or test speaker performance by adjusting channel configurations and power levels.
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