Gathukila Design 2.1 Power Amplifier Board Multi Function 5V20W Audio

The same board is compared with the following two speakers, both of which are 4 Euro: the sound on the left is also 4 euro, which is not only small, also poor sound quality; on the right performs in all aspects The subwoofer must be matched , and then installed into to make the phase hole. Other parts shall be sealed. Pay more attention to the speaker impedance, mouth meridian and height. If the impedance and mouth meridian are not with note stroke, it not be enough. Not only the sound is small, also there is no shaking of the subwoofer This product can drive 5V / 20W (W), based on the principle of circuit, the secondary development and processing, the maximum power can be configured to 20W [10W + 10W sub box (5W * 2)]; so the power amplifier board has requirements for power supply and horn,