ZK-502T TPA3116D2 2*50W Bass AMP bluetooth 5.0 Subwoofer Amplifier Board 2.0 Channel High Power Audio Stereo Amplifier B

Specification Type power amplifier moduleBrand Wuzhi AudioModel ZK 502TProcessor speed 24MHZPower supply current 5APower supply voltage DC9 24VPower 2 50WChannels 2 2 0 Purpose Amplify the audio signal and then output to the speakerColour BlackWhether to support APP not supportedPackage included 1 x power amplifier moduleQuestion and answer 1 How to choose a power supply The power supply with the board is critical The higher the voltage the higher the current and the better the output power If you only have 12V 1A you can bring a 3 4 inch speaker If you are 19V 5A or above there is no problem with 8 10 inches and the power supply must be highly valued If the voltage is too low the sound will be distorted after the sound is amplified If the current is too small the speaker will pull the voltage low work abnormally or the sound quality will deteriorate It is recommended to use 18V19V24V power supply with current above 3A If you only have 9V12V or 1A 2A power supply it can also be used but the power is small Please pay attention to the maximum volume when using it which may affect the sound quality 2 How to choose a speaker Commonly used speakers are generally 4 ohms or 8 ohms can not distinguish between positive and negative the effect is the same If your speaker power is small it may be used between 10W 30W The power supply voltage is small to prevent the amplifier from burning out after burning For example select a power supply below 15V I