Amazon.com: Pyramid 6.5 Inch Car Woofer Speaker - 300 Watt High Powered White Injected Polypropylene Cone Car Audio Sound Component Speaker System w/ High-Temperature Kapton Voice Coil, 4 Ohm, 40oz Magnet - WX65X : Electronics
Amazon.com: 10 Inch Car Subwoofer Speaker - 300 Watt High Powered Car Audio Sound Component Speaker System w/ 1.5 Inch Kapton Bobbin Voice Coil, 8 Ohm, 25 oz Magnet, Cloth Edge Suspension - Pyramid WH10,Black
Sistema de alto nível de um Woofer de baixo médio de 6,5 pessoas -
Pyramid PW677X 6 Inch 300 Watt 4 Ohm Car Audio Power Audio Sub Subwoofer Woofer - Walmart.com
Preços baixos em 300-399W Single Subwoofers | eBay