JBL Control Contractor 20 Series surface-mount speakers and subwoofers deliver full, rich sound; deep bass extension; high SPL output; and wide, consistent coverage for retail stores, restaurants, health clubs, theme parks, educational facilities or any application demanding top-quality sound reinforcement in a rugged, compact package. The Control Contractor 20 line balances superior fidelity with versatility, ease-of-installation and contemporary style: Models feature weather-resistant transducers and enclosures, and their molded, high-impact polystyrene shells are available in black, white or paintable finishes. Built-in JBL Invisiball® mounting technology makes installation a breeze. Control Contractor surface-mount speakers are voiced similarly to other JBL Control Contractor models, allowing them to be combined with in-wall and in-ceiling speakers in a single listening space. Choose from 13 models in an array of transducer sizes, coverage patterns and output ranges.