The Infinity Reference 1250 is a 12-inch Subwoofer. Our Reference Series represents perhaps the best value of any premium brand in its price range. The Reference 1250 utilizes a Polypropylene cone material for excellent power handling capabilities. This speaker uses a single 4-ohm voice coil and has a sensitivity of 93db. It has a power handling rating of 300 watts RMS and can handle peaks of 1000 watts. These speakers come with a one year parts and labor warranty. Infinity Systems is a leader in loudspeaker design for both car and home speaker systems and is part of Harman International.