I recently came across a new software called Multi-Sub Optimizer (MSO) and I believe it deserves some attention. Basically it is designed to help with setting up multiple subwoofers not only to make SPL vs frequency graph as flat as possible but it also allows for making it flatter in multiple listening positions. All this is possible because MSO unlike other known to me programs makes multiple subs work independently. It is not a surprise that highs and lows generated by one source, reflected o