2.1 Channel HiFi Audio Amplifier Board TPA3116D2x2 | 24V DC 200W+100W Subwoofer Digital Power Module

Key Advantages

1. Dual TPA3116D2 Chip Configuration
   • Each stereo channel (left/right) and subwoofer channel is independently driven by a dedicated TPA3116D2 chip, ensuring low crosstalk and balanced power distribution (e.g., 2x100W for stereo + 100W for subwoofer at 4Ω).
2. High Power Output (300W Total @24V DC)
   • Delivers 200W (L+R) + 100W (sub) RMS power into 4-8Ω loads, ideal for medium-to-large bookshelf speakers and active subwoofers in home theaters or party systems.
3. Ultra-Low Noise (100dB SNR)
   • High signal-to-noise ratio minimizes background hiss, preserving audio clarity even at low volumes—critical for high-fidelity music playback and movie soundtracks.
4. Wide Input Voltage Range (DC 12-26V)
   • Flexible power supply compatibility supports car batteries (12V), standard adapters (19V/24V), or custom DC systems, enabling portable or fixed installations.
5. Compact & Robust Design (100x70x30mm, 136g)
   • Space-efficient PCB layout with reinforced solder points and aluminum heatsink (optional) ensures thermal stability in enclosed speaker cabinets.
6. 1.2MHz Switching Frequency
   • High-frequency operation reduces the size of passive components (inductors/capacitors), further shrinking the board footprint while maintaining efficiency (>90%).

Technical Specifications

• Output Load: 4Ω–8Ω (per channel)
• Frequency Response:
  • Stereo: 20Hz–20kHz (±1dB)
  • Subwoofer: 20Hz–200Hz (adjustable via external crossover)
• THD+N: <0.05% (1W, 1kHz)
• Protection Circuits: Over-current, over-temperature, short-circuit, and DC offset protection.
• Input Sensitivity: 0.775V RMS (for full power)

Target Applications

1. Home Theater Systems
   • Upgrade 2.1-channel speaker setups with high-power, low-distortion amplification for immersive movie soundtracks and gaming audio.
2. DIY Active Subwoofer Projects
   • Pair with a custom subwoofer enclosure and passive radiator for deep, punchy bass in music production or home audio.
3. Automotive Audio Retrofits
   • Replace factory car amplifiers with a 24V-compatible solution to drive aftermarket speakers and subwoofers (e.g., truck/SUV sound systems).
4. Commercial Audio Installations
   • Background music systems in cafes, gyms, or retail stores requiring compact, high-efficiency amplification with bass enhancement.
5. Portable PA Systems
   • Build battery-powered public address systems for events or outdoor gatherings by combining with 12V/24V power banks.
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