merakit amplifier PAM 8403 + modul mp3 player FM NON Buetooth + bluetooth receiver + preamp mic

in this video will assemble the PAM 8403 5v amplifier + 12v FM mp3 player module without bluetooth + 5v bluetooth receiver & mic preamp 1 12v transistor using 18650 3.7v x 3 battery = 12v voltage to supply the MP3 player module, then the PAM 8403 amplifier is installed in a small elko MP3 player module that has passed the 7805 regulator IC in the MP3 module automatically the voltage becomes 5v for the PAM 8403 power amplifier, then the bluetooth receiver is supplied 5v from the MP3 player module that is installed with the PAM 8403 amplifier into one, then for the mic preamp circuit it is supplied 12v into one with the MP3 player module. then the order of assembling the amplifier first from the MP3 module the audio output R goes to the R input of the PAM 8403 Amplifier which can only function the R part because the L part is dead and cannot get the sound out of the speaker. PAM 8403 audio amplifier input section R is installed with 2 2k2 resistors, one from the MP3 module and the other from the mic preamp output, then on the MP3 module the Aux audio input section is installed to the Bluetooth receiver connected to the R section of the Aux input of the MP3 player module, then on the 12v mic preamp circuit the output section is connected to a 2k2 resistor, branch 2, the other is the PAM 8403 audio input section R is for the mic preamp and the other is for the music input from the MP3 player