Adding a USB MP3 player to an active speaker is very easy. Simply connect the input cable to the USB input, and the USB output to the tone controller input or active speaker circuit. For the USB power supply, simply use the main power supply from the active speaker, but first add a regulator between 7808 and 7812 to ensure the USB MP3 player is safe.
Service Address/Location (Refson Electronic): https://maps.app.goo.gl/emopW1MCyVyH8...
WhatsApp: https://wa.me/message/TEYCHPBUCI23C1
Instagram: https://www.instagram.com/adhielektro...
Facebook: / adhielektronik