Systems include a choice of factory wired driver mounted to a fine perforated grille 2' x 2' with wired transformer and factory mounted 7" deep protective backbox. They are shipped ready to install and require no speaker cut-outs in the tile or time consuming assembly. 2' x 2' Systems are designed to replace a standard 2' x 2' tile and are supported by the T-bar grid. Assemblies include a factory wired speaker/transformer mounted to a 2' x 2' subplate with a fine-perforated grille and mounted BC8-4-style protective backbox. The backbox is offset to one side of the 2' x 2' grille allowing it to be rotated in the ceiling to install around plenum obstructions. For fast connection, speaker leads exit through a metal clamp.