In the quest for uncompromising car audio performance, sometimes you have to think outside the box. Infinity's new Reference Flex subwoofers have been designed to replace and upgrade factory 8" subwoofer accessories. Using our revolutionary patent-pending adjustable flange, you can balance mounting height and depth for a fully integrated, seamless fit. To further enhance performance, an ultra-efficient driver and cone structure has been developed using our exclusive polypropylene cone and long-lasting rubber surround.To ensure optimal integration with your systems' factory amplification, the subwoofers Infinity Reference Flex are available in single 2-ohm and dual 2-ohm voice coil configurations.If you're looking for great bass performance but want to maintain the factory look of your system, Infinity Flex subwoofers are the ideal choice. PZA MORE SPECS