Bose F1 Model 812 Flexible Array Loudspeaker Exclusive flexible array can be configured into four unique shapes (Straight, C, J or Reverse J), allowing the customer to choose the best possible coverage pattern for the application Bi-amplified design with 2 high-output, Class-D amplifiers to separately power the FLEX array and 12-inch LF driver Wide, consistent coverage from an 8-driver mid/high line array, with each driver mounted on a custom 100 waveguide 2 input channels with independent volume controls and Line Level/Mic switch on Channel 1 Strong, low-frequency output from a 12-inch high-performance woofer