Pyramid PW848USX 8- Inch 350 Watt High Performance 8 Ohm Subwoofer : Amazon.ca: Electronics
AIYIMA 8 Inch Subwoofer Speaker Woofer 4 8 Ohm 150W High Power Long Stroke Deep Bass Hifi Sound Loudspeaker DIY For Home Theater|Bookshelf Speakers| - AliExpress