These huge speakers belong to a member of the local audio club and were used in a demonstration of the use of sound baffles to remove unwanted reflections. They consist of a plate amp powered 10" woofer, a co-planar and normal cone mid-range and two small soft dome tweeters. Also a titanium dome tweeter was mounted on the rear and could be switched in or out. The woofer crossover point and volume was also adjustable. Big BASS!