The G15-SUB is equipped with an extremely long excursion 15" neodymium ultra low distortion woofer. The neodymium motor delivers extreme high magnetic flux for increased efficiency. The 4" voice coil is 38mm high, ensuring ultra linear excursion of 26mm/pp at consistent magnetic force. State-of-the-art carbon-fiber cone ensures maximum stiffness and low moving mass. Three aluminum shorting rings reduce inter modulation distortion minimize induction variation while reducing thermal compression. This design dramatically reduces the distortion of a typical sub woofer at longer excursion levels, and improves the overall sound quality and performance characteristics of the cabinet. The G15-SUB is perfectly suited as a sub-extension for the G500-series systems and can be used in houses of worship, theatres, clubs and mobile applications.