I bought this subwoofer amplifier board from AliExpress for only KES1318 which is around 10 USD. The controls at the front are the volume and frequency control. The power supply voltage can be anything from 12 to 24 Volts. In the video below Im using a 19 Volt laptop power adapter. This small amplifier board … Continue reading Very impressed by the TPA3116 Subwoofer Amplifier board
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