Compact vented subwoofer system utilizing an 18-inch heavy duty woofer with 3-inch voice coil. The black, perforated steel grille and steel corners provide protection and professional appearance and sturdy steel handles allow for ease of transport. top pole mount for 1 3/8-inch stand poles is incorporated and two 1/4-inch phone jacks are connected in parallel for daisy chaining orto send full-range signal to PA cabinet. Impressive 400W program power rating allows for plenty of gut-pounding bass. Internal low-pass crossover network, along with vented enclosure, provides great bass response that will add thump.