Attached are pictures taken through the crossover cutout for an N1200 crossover. There appears to be two 15" drivers in each cabinet. Only the low end of the crossover is connected to the speakers in the cabinets. It looks like the high end wires went to drivers in a different cabinet (which I have no knowledge of). The cabinet is custom built and is a corner unit. Any idea what they are? Not much to go off of!