QSC LA112-KIT-SALA112 KIT SA Audio professionals looking to ground stack their LA Series line array speaker modules will appreciate the QSC LA112 KIT SA, an array frame stack adapter kit for the LA 112 active line array loudspeakers. It enables you to ground stack up to 3 speaker modules on a single LS 118 subwoofer. Features Ground Stack Adapter Kit For Use with LA 112 AF Array Frame Stack Up to 3 Speakers Works with LS 118 Subwoofer