ZK-502MT 2*50W bluetooth 5.0 Subwoofer Amplifier Board 2.0 Channel High Power Audio Stereo Amplifier Board AUX Bass Treb

Features Product name 50W Bluetooth audio power amplifier module with toneProduct model ZK 502MTBluetooth version 5 0 unobstructed 10 meters Signal to noise ratio 90dBInput method AUX BluetoothChannel Left and right dual channels stereo Amplifier chip Domestic power amplifier chipAdaptable power supply DC9 24V 3A or more Do not connect to 24V battery pack Adaptable speakers 10 100W 4 8ΩOutput power 15W 2 12V 8Ω 30W 2 24V 8Ω 20W 2 19V 8Ω 30W 2 12V 4Ω 40W 2 19V 4Ω 50W 2 24V 4ΩProtection mechanism overvoltage overcurrent short circuit protectionProduct size 89mm 60mm 21mmProduct weight 111g including packaging Prompt Only when the audio input is sufficient and the power supply voltage current is sufficient will there be enough output power The higher the power supply voltage the greater the output power the smaller the speaker impedance the greater the output power Please make sure that the power of the adapted power supply is greater than the actual working power of the amplifier Package includes 1 x ZK 502MT Audio Power Amplifier Board kitQuestionAnswer Q1 How to choose the power supply A The power supply of the board is very important The higher the voltage the higher the current and the greater the output power If you only have 12V 1A you can use a 3 4 inch speaker If you are above 19V 5A there is no problem with 8 10 inch speaker the power supply must be highly valued If the voltage