The Yamaha YST-SW216 is an entry-level front-firing subwoofer that provides up to 100 watts of dynamic power. The subwoofer features Yamaha's advanced YST II technology in which the speaker and amplifier work together to cancel impedence and provide a high level of performance. It is designed with a 10" long-stroke cone driver and a high-density MDF cabinet for reduced vibration and resonance. The YST-SW216 offers aof 25 to 180 Hz and includes a selectable high cut filter of 40 to 140 Hz. It also features a linear port for reducing extraneous noise and is magnetically shielded.