The Artec S15 band-pass bass system incorporates a 15SX low frequency transducer with a 4” voice coil. The loudspeaker is protected by a perforated steel grille, sealed against corrosion using a powder coat finish. The Action 18 is designed for use in biamped systems. A top located pole-mount socket permits mounting full-range systems above the Artec S15 and two bar handles makes moving easy.