The Delta 18B uses a high output‎,‎ low distortion 18” cast frame woofer with a 3” voice coil‎.‎ Comprehensive array inserts are marked on the top panel for arrayed applications‎.‎ Delta 18B is ideal when used in arrays and is equally at home in a wide variety of fixed installation and touring applications‎.‎ Rhino Rock™‎,‎ our new texturised composite finish is used in all models‎.‎ This new finish provides the great look of a painted finish with the durability of a carpet covered enclosure giving you the best of both worlds‎.‎ The Delta 18B is constructed from plywood and features a steel pole mount receptacle‎.‎