A 10-Inch heavy-duty low-frequency driver, with a 1.5" copper voice Coil on a solid aluminum former, an Injection molded mineral Filled polypropylene Cone and a large rubber Roll surround. High efficiency 200 watt RMS audiophile quality class D amplifier. Frequency response: 27 Hz to 200 Hz ( + 0/ - 3 dB).

【40 INCH 8 Speakers TV SOUND BAR】Deep Bass Performance,Built-in subwoofer top sound chips and Import digital amplifier chips,ultra-thin cavity to realize subwoofer,8 loudspeakers that bring the bass and clearly natural sound (external heavy bass, built-in high pitch,Sound box D power amplifier),4 speakers bass,2 full drivers,2 treble drivers, totally 8 speakers complete your home theater system with high quality sound,give your room-filling sound. 【SUPER CONVENIENT TO CONNECT TV IN WIRE OR WIRELESS】 Support Optical/Coaxial/AUX/RCA/USB/TF/BT functions,and also,bluetooth 4.2 technology automatic wireless connection that works with any bluetooth enable devices,we have passed bluetooth BQB certifictions.. 【CONVENIENT COTROL BY REMOTE DIRECTLY】 Remote Control BASS/TREBLE/Imput/5EQ modes/Mute/Reset and so on. All functions can be switched and controlled at random.from LED display on Soundbar, you could know what mode it is.