Wireless connection with the Sub. 

Driver Unit: 6.5''+2''X4

Output Power: 40W + 15Wx2 RMS

Frequency Reponse: 40-20K Hz

S/N Ration: >=75dB

Separation: >=50dB.  MP5, Optical, Coaxial, ARC, Bluetooth, USB, SD, Remote Control.