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ITEM NAME:Bluetooth 5.0 TPA3116D Digital Amplifiers Board 2.1 Channel Audio 2*50W+100W AUX Product Overview Bluetooth 5.0 TPA3116D Digital Amplifiers Board 2.1 Channel Audio 2*50W+100W AUX Q&A 1. How to choose a power supply? The power supply with the board is very important, and the ripple of the selected power supply must be A power supply with a small, large ripple will cause the noise at the bottom of the power amplifier board to increase. There is electric current. The higher the voltage, the greater the current and the greater the output power That’s enough, if you only have 12V1A, you can bring 3-4 inch sound box. If you are above 19V5A, there is no problem with 8-10 inches. Power must be highly valued. If the voltage is too low, the sound is amplified It is easy to cause sound distortion, if the current is too small, The speaker will pull down the voltage, work abnormally or the sound quality will deteriorate. It is recommended to use a power supply of 18V19V24V with a current above 5A. If you only have 9V12V or 1A2A power supply, you can also use However, the power is small, and the volume is close to the maximum when using it. Distortion affects sound quality. 2. How to choose a speaker? About the speaker type: commonly used speakers are generally 4-8 ohms Can be used. The left and right channel speakers need to be connected to full frequency speakers Horn or medium and high frequency speakers, the power is between 20W-100W. The subwoofer speaker cannot be connected to the ordinary speaker, it needs to be connected with a subwoofer The speaker of the speaker, the power is between 20-100. Subwoofer The diving frequency of horn must be at least 50Hz. If your speaker has low power, such as between 20W-50W It can also be used, and the power supply voltage needs to be lower to prevent Burn the speaker after loud, for example, choose a power supply below 15V. Such as If you are a 50W-100w speaker, don’t worry about the speaker burning For bad problems, you can c.Find many great new & used options and get the best deals for Bluetooth 5.0 TPA3116D Digital Amplifiers Board 2.1 Channel Audio 2*50W+100W AUX at the best online prices at Order2india Shopping! Free shipping for many products!