This is the Madisound Recession Buster kit that is sold out. It is comprised of an SB Acoustics tweeter and 5.25" Scanspeak woofer. The cabinets are 3/4" solid walnut with 1.5" MDF front baffles and 1" MDF back panels. Internal bracing is made from 3/4" birch plywood. Currently undergoing break-in...review to come.