CMU TPA3116D2 100W Subwoofer Amplifier Board 8-25VDC 8
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- 24 Aug 2026
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CMU TPA3116D2 100W Subwoofer Amplifier Board 8-25VDC 8
Checked Yesterday
ViewR 427.00
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R 737.00
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Description
The CMU TPA3116D2 100W Subwoofer Amplifier Board is a high-performance Class-D digital audio amplifier module designed specifically for low-frequency (subwoofer) applications. Built around the powerful and efficient Texas Instruments TPA3116D2 amplifier chip, this board delivers clean, punchy bass output with excellent efficiency, low distortion, and stable thermal performance.
This amplifier module is ideal for DIY audio projects, active subwoofer systems, home audio builds, car audio systems, portable speaker projects, and custom sound systems where compact size and high output power are required. With a maximum output of 100W at 8 , it provides strong, deep bass reproduction while maintaining clarity and low noise levels.
The board features a NE5532 high-quality op-amp buffer stage, which improves signal conditioning and ensures clean input processing before amplification. This results in better dynamic range, improved signal stability, and reduced distortion-making it suitable for both professional and enthusiast audio applications.
Designed for flexibility, the amplifier operates from a wide DC power range of 8V to 25V, allowing compatibility with various power sources such as laptop power adapters, battery packs, DC power supplies, and custom power systems. The standard 5.5mm DC power jack ensures easy and universal power connection.
The TPA3116D2 Class-D architecture ensures:
High energy efficiency
Low heat generation
Minimal power loss
Compact design
Long-term reliability
This makes the board perfect for continuous operation in compact enclosures without the need for large heat sinks or cooling fans.
Key Applications
DIY subwoofer amplifier builds
Active subwoofer speaker systems
Home audio bass modules
Car subwoofer systems
Custom audio projects
Bluetooth speaker systems (with external BT module)
Portable sound systems
Multimedia speaker upgrades
Performance & Power Notes
At 12V 1A, suitable for small 3-4 inch speakers
At 19V 5A, suitable for large 8-10 inch subwoofers
Higher voltage and current = higher output power and stronger bass performance
Key Features
High-efficiency Class-D digital amplifier
Powerful TPA3116D2 amplifier IC
100W output power (8 load)
NE5532 op-amp buffer stage for clean signal processing
Wide 8-25V DC input range
Compact PCB design (75 × 60 mm)
Low noise and low distortion
Excellent thermal performance
Standard 5.5mm DC power jack
Ideal for DIY and professional projects
Technical Specifications
Amplifier Chip: TPA3116D2
Op-Amp: NE5532
Output Power: Up to 100W
Speaker Impedance: 8
Power Supply: DC 8-25V
PCB Size: 75 × 60 mm
Connector Type: 5.5mm DC jack
Amplifier Type: Class-D Digital
Application Type: Low frequency / subwoofer amplifier
This CMU TPA3116D2 100W Subwoofer Amplifier Board is the perfect choice for anyone looking to build a powerful, compact, energy-efficient bass amplifier system with professional-grade performance and reliability.
What's in the box
1 x CMU TPA3116D2 100W Subwoofer Amplifier Board 8-25VDC 8