The Augspurger Duo 12MF-Sub212-DSP3/2500 is a two-way main monitor cabinet loaded with two 12" LF drivers and one 4" high compression driver with beryllium diaphragm on an Malekpour-designed rock maple "MF" (Midfield) horn. The Duo 12MF-Sub212-DSP3/2500 configuration includes two S212-D12 subwoofer cabinets with two 12" sub drivers each.