2.1-Channel Audio Amplifier Module TPA3116D2 | 50W×2+100W Subwoofer | Wide Voltage 12-24V with Tone Control

Key Advantages

1. TPA3116D2 High-Efficiency Amplifier Chip
   • Utilizes Texas Instruments’ TPA3116D2 D-Class amplifier IC, delivering 50W RMS per channel (4Ω) for left/right speakers and 100W RMS (4Ω) for subwoofer, with >90% efficiency to minimize heat generation.
2. Wide Voltage Input (DC 12-24V)
   • Supports 12V (car battery/desktop PSU), 15V (laptop adapter), 19V (monitor PSU), or 24V (industrial power supply), ensuring compatibility with diverse power sources for portable, automotive, or stationary audio systems.
3. Flexible Power Output by Voltage & Impedance
   • 12V Input:
     • 8Ω speakers: 12W (left) + 12W (right)
     • 4Ω speakers: 20W (left) + 20W (right)
   • 15V Input:
     • 8Ω: 18W + 18W | 4Ω: >30W + 30W
   • 19V Input:
     • 8Ω: 32W + 32W | 4Ω: >45W + 45W
   • 24V Input:
     • 8Ω: 38W + 38W | 4Ω: >55W + 55W
   • Ideal for: Matching speaker power requirements across voltage levels (e.g., 12V for car doors, 24V for home subwoofers).
4. Built-in Tone Control (Bass/Treble Adjustment)
   • Features potentiometers for bass (+12dB/-24dB @ 100Hz) and treble (+12dB/-24dB @ 10kHz) adjustment, enabling users to fine-tune audio output for music genres (e.g., boost bass for EDM) or room acoustics.
5. Ultra-Wide Frequency Response (14Hz–100kHz)
   • Reproduces deep sub-bass (14Hz) for cinematic explosions and ultra-high frequencies (100kHz) for crisp cymbals, surpassing standard 20Hz–20kHz range to capture subtle audio details.
6. High Switching Frequency (1.2MHz)
   • Operates at 1.2MHz switching frequency, reducing EMI interference and enabling the use of smaller inductors/capacitors, resulting in a compact PCB design (ideal for space-constrained builds).
7. Universal Speaker Compatibility
   • Drives 4Ω–8Ω speakers (left/right + subwoofer), supporting 2-way bookshelf speakers, full-range drivers, or passive subwoofers, making it suitable for budget Hi-Fi setups or pro-audio prototypes.
8. Over-Current/Over-Temperature Protection
   • Includes automatic shutdown if temperature exceeds 85°C or current surges, protecting the amplifier and connected speakers from damage during prolonged high-volume use.

Technical Specifications

• Model: 2.1-Channel Audio Amplifier Module (TPA3116D2-based)
• Channels: 3 (Left + Right + Subwoofer)
• Amplifier Chip: TPA3116D2 (Dual-Bridge D-Class)
• Output Power:
  • Left/Right: 50W RMS (4Ω, 1kHz, THD=1%) | 25W RMS (8Ω)
  • Subwoofer: 100W RMS (4Ω, 100Hz, THD=1%) | 50W RMS (8Ω)
• Power Supply: DC 12V–24V (Recommended: 19V–24V for full power)
• Frequency Response: 14Hz–100kHz (±1dB)
• Switching Frequency: 1.2MHz
• Speaker Impedance: 4Ω–8Ω
• SNR: ≥100dB (A-weighted)
• THD+N: ≤0.05% (1W, 1kHz)
• Protection: Over-Current | Over-Temperature (>85°C)
• Tone Control: Bass (±12dB @ 100Hz) | Treble (±12dB @ 10kHz)
• Dimensions: [Insert if available, e.g., 120mm × 80mm × 25mm]
• Weight: [Insert if available, e.g., 150g]

Target Applications

1. Car Audio System Upgrades
   • Replace factory amplifiers to power 6.5-inch door speakers (left/right) and 8-inch/10-inch subwoofers, using a 12V car battery for deep bass during drives. Adjust tone to compensate for road noise.
2. Budget Home Theater Bass Enhancement
   • Add a dedicated subwoofer channel to existing 2.0 speakers, improving low-frequency response for movies (e.g., thunder in action films) or gaming (e.g., explosions in FPS games).
3. DIY Desktop/Gaming Audio
   • Build a compact 2.1-channel gaming setup by pairing with bookshelf speakers + subwoofer, using a 19V laptop PSU for power. Boost bass for immersive footsteps in FPS games.
4. Portable Party System
   • Combine with a 12V battery pack and collapsible speakers for outdoor events (e.g., picnics, beach parties). Adjust tone to suit music genres (e.g., more bass for hip-hop).
5. Educational/Experimental Projects
   • Study D-Class amplifier design, tone control circuits, or speaker impedance matching by modifying the module’s components (e.g., replacing capacitors for extended bass response).
6. Commercial Audio Installations
   • Power subwoofers in restaurants, retail stores, or gyms where deep bass is needed for background music or motivational workout tracks. Over-temperature protection ensures reliability during prolonged use.
7. Studio Monitoring Subwoofer
   • Create a low-cost reference subwoofer for music producers to check low-end balance in mixes, ensuring kick drums and basslines translate well across consumer speakers.
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