The RS1001i is a 10-inch open-ceiling or surface mount subwoofer tuned for maximum output and performance across the operating bandwidth. By incorporating a 10-inch polypropylene woofer and a butyl rubber surround in a tuned and ported enclosure, this speaker delivers maximum low frequency response (38 Hz 450 Hz, - 10 dB, independently verified) and high SPL (105 dB). Mounting hardware includes high-quality UL listed cables and integrated SpeedClamp™ self-locking wire clamp for fast, easy and secure installation. For easy ordering, stocking and installation, the RS1001i-II-T includes a five-position tap switch for 25-, 70.7- and 100-volt applications with a transformer bypass position.