Infinity's latest Reference subwoofers offer incredible installation flexibility. Their low profile design allows them to fit snugly into even the shallowest enclosures, ideal for today's compact cars. Polypropylene woofer cones deliver exceptional bass response at frequencies as low as 27 Hz. But what makes these subwoofers really stand out is their Harman-patented SSITM (Selectable Intelligent Impedance), which allows the subwoofer to present the amplifier. a 2 or 4 ohm load at the flick of a switch..PZA MORE SPECS
