The TPA3116D2 Digital Subwoofer Amplifier Board – 2x50W + 100W Subwoofer, DC12-24V, uses two Texas Instruments tpa3116d2 class-d amplifier chips to drive a 2.1 speaker system two satellite channels at 50W each for left and right stereo, and one dedicated subwoofer channel at 100W, all from a single compact PCB. Class-D amplification converts the audio signal to a high-frequency pulse-width modulated output that the speaker coil filters back to audio achieving efficiencies above 85% compared to the 50–70% of traditional Class-AB amplifiers. That higher efficiency means the board runs significantly cooler at the same output power, which is important for continuous operation without heatsink bulk.
The tpa3116 digital subwoofer amplifier board 2.1 channel design separates the subwoofer signal from the stereo channels on the pcb the subwoofer channel handles bass frequencies below the crossover point while the left and right channels reproduce the mid and high frequencies through satellite speakers. The 100w digital subwoofer amplifier board onboard audio jack and terminal block inputs give connection flexibility – connect a 3.5mm audio source through the jack or wire audio directly through terminal blocks from a source without a 3.5mm output.
The 12v subwoofer amplifier board supply range of DC 12V to 24V suits automotive 12V, dedicated 24V linear supply build, and laptop-brick powered home audio builds equally. Higher supply voltage within the rated range increases maximum output power – a 24V supply produces more output than a 12V supply on the same load impedance. The 4Ω to 8Ω speaker impedance range covers most standard bookshelf and subwoofer driver combinations. The digital amplifier board suits DIY home theatre, car audio, and build portable speaker system. This tpa3116d2 digital subwoofer amplifier board is available on StemVolt, and its working on audio amplification and 2.1 channel speaker system.
Related Product:
- Explore Audio Amplifier Module
Features:
- Dual TPA3116D2 Class-D chips deliver high audio efficiency with low thermal output.
- Dedicated 100W subwoofer channel drives deep low-frequency bass reproduction effortlessly.
- 2 x 50W stereo channels power left and right satellite speakers.
- High 100dB SNR maintains clean audio signals with minimal background noise.
- Onboard terminal blocks and audio jacks support versatile wired signal connections.
Technical Specifications:
| Specification | Details |
|---|---|
| Product Type | Digital Subwoofer Amplifier Board |
| Amplifier Chip | Dual TPA3116D2 Class-D Chips |
| Channel Configuration | 2.1 Channel (3 Channels: Left, Right & Subwoofer) |
| Power Output | 50W × 2 (Left/Right) + 100W (Subwoofer) |
| Operating Supply Voltage | 12V–24V DC |
| Output Load / Impedance | 4Ω–8Ω |
| Audio Input / Output Ports | Terminal Blocks & Onboard Audio Jack |
| Signal-to-Noise Ratio (SNR) | 100dB |
| Switching Frequency | 1.2MHz |
| Frequency Response Range | 14Hz–100kHz |
Applications:
- Powers custom 2.1 speaker systems for immersive audio performance.
- TPA3116D2 digital subwoofer amplifier board speakers and dedicated subwoofer for high-clarity sound.
- Operates 2.1 channel car audio systems directly from standard 12V power supplies.
- Digital subwoofer power amplifier board portable 2.1 channel speaker enclosure in field
Package Include:
- 1 x TPA3116D2 Digital Subwoofer Amplifier Board














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