Sony SACS9 10-Inch Active Subwoofer， Black<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> 115 Watt， Amplified Subwoofer (6 ohms， 80 Hz， 10% THD) </span></li><li><span class="a-list-item"> 10" Foamed-Mica Cellular Reinforced Woofer </span></li><li><span class="a-list-item"> Speaker and Line Level Inputs， Frequency Response 28-200 Hz </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41NtEaerK6L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41pVRRU7tBL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41MHuQkt30L.jpg" noproxy>