jbl synthesis scl 2xlJBL Synthesis SCL 2XL In wall speaker for home theater with solid bass and clear reproduction JBL Synthesis SCL 2XL is an in wall speaker developed for home theaters where you want a solution that can deliver high volume while maintaining control and detail. It works as an LCR behind an acoustically transparent screen or as a surround speaker in larger systems, and it fits well in rooms where both output and consistent coverage are required. With a