[bpape]

No need to do Linacoustic in the front cutouts. Do some thicker absorbtion filling the corner and that's sufficient.

In the back, if you have the material, doing both corner (vertical) and along the floor will be a benefit. FYI, the breakeven for material is 6" thick. ie - if you do a 6" thick panel straddling a corner, you can do a chunk of the same length and face size with the same amount of material. If the one along the floor is smaller - like say only 1' wide, then I'd definitely do the chunk. If it's 2' wide, then you can slide with 4" to save material to do the other corners if budget dictates.

Bryan