With its 250mm woofer, active equalization, and a
230-watt Class D amplifier, this onkyo subwoofer delivers an incredibly powerful, tight, and deep bass response down to 35Hz. Thanks to its substantial size and ample enclosure, this onkyo subwoofer can fill rooms with deep bass, completely undistorted even at high volumes. This is because the onkyo bass reflex port is tuned so extremely low that air noise is only audible below the audible frequency range. the woofer is magnetically shielded to allow it to be placed near a television.