TPA3116 Audio Amplifier Board Bluetooth 5-0 Stereo Digital Power Amplifier Board Subwoofer Amplifier Module Dual Channel Audio Receiver 50W50W100W DC 12V 24V

welcome to my shop: 1.Description:   It is a subwoofer digital power amplifier board.This is a 12V~24V DC power supply,using TPA3116D2 digital power amplifier chip as the core,can support 100W (bass channel)+50W (left channel)+50W (right channel) three-channel output. 2.Description:   1>.Product Name:Subwoofer Digital Power Amplifier Board   2>.Bluetooth Version:BLE 5.0   3>.Working Voltage:DC12V~24V(note that the DC no-load voltage should not be greater than 25.5V)   4>.Working Current:3A~4A   5>.Bluetooth Receiving Distance:8 meters   6>.Speaker Audio:Left and right channels:4~8ohm,bass channels:2~8ohm   7>.Work Temperature:-25?~85?   8>.Work Humidity:5%~95%RH   9>.Size:130*102.5*25.5mm   3.Common Problem:   1>.The power amplifier board has current sound and noise.     1.1>.The matching power supply filter is not good.     1.2>.The input signal quality is poor     1.3>.The input connection cable is of poor quality.     1.4>.The input is connected to other playback devices and some devices share the same power ground causing noise.   2>.The product has sound or there is no sound in 1 channel.     1.1>.The speaker is broken or the speaker cable is disconnected.     1.2>.The input cable is not properly connected.   3>.The volume is turned off and broken.     1.1>.Insufficient power supply     1.2>.The speaker itself is poor or damaged, and the speaker power is too small or too large.     1.3>.The left and right channel speaker outputs are independent and cannot be connected to each other. 4.Package:   1>.1pcs Subwoofer Digital Power Amplifier Board