SUB-12TD is a 12 inches subwoofer bass speaker with double bass reflex design and good performance of large amplitude, low distortion and wide dynamic range. It supports personal adjustment of gain, phase and EQ. It handles AC 110V/60Hz and AC 220V/50Hz voltage. Connect it with a professional amplifier and it will give you broad and sonorous bass. As a top 10 audio brand in China, Tonewinner has 30+ years experience in designing and manufacturing acoustic products. As an original supplier, Tonewinner always warmly welcomes distributors, partners and customers around the world.