Cómo Hacer Mini Subwoofer de 4" ALTAVOZ BLUETOOTH Casero

Project Drawer ported for Mini Home Subwoofer 4 "with a TPA3116 50W x2 amplifier, a portable bluetooth USB speaker wooden box. Materials: Bluetooth MP3 Player Module Stereo Audio Amplifier Module 50w x2 Tpa3116 Mini cooling fan 40mm x 40mm 2 mini 4 "Subwoofer switch Female jack connector