Upgrade your sound system with this 2.1 Channel High Power Audio Amplifier Board designed for powerful and clear audio output. This amplifier board uses the TDA2050 audio chip for left and right channels to deliver high-quality stereo sound, while the D1047 transistor powers the subwoofer section for deep and strong bass performance. The circuit also features the JRC4558 (NJM4558) operational amplifier, which works as a low-pass filter to enhance low-frequency response and provide rich bass output for the subwoofer. It is an ideal choice for DIY audio enthusiasts, home theater projects, speaker upgrades, and audio system repairs. This amplifier operates with 15-0-15V AC or 24-0-24V AC transformer supply (minimum 5A) and supports 2.1 channel output for left, right, and subwoofer speakers. With high efficiency and stable performance, this board is perfect for building powerful sound systems with excellent audio clarity. ⚙️ Specifications: • Amplifier Type: Class AB• Chip Model: TDA2050 JRC4558 (NJM4558) D1047• Output Channel: 2.1 Channel• Output Power: 32W 32W 70W• Supply Voltage: 15-0-15V AC or 24-0-24V AC Transformer (Minimum 5A)• Speaker Impedance: 4Ω – 8Ω• Frequency Response: 20Hz – 2000Hz• Woofer Frequency Response: 20Hz – 200Hz• Power Efficiency: >90%• Board Size: 17.2 cm × 9.2 cm × 4.3 cm �� Recommended Speakers: • Subwoofer: 6–10 inch, 4-8Ω, around 60W• Left & Right Speakers: 4–6 inch, 4-8Ω, 20–40W full range speakers
