I hear that nothing sounds like an Ampeg 8-10 cabinet with the 70s SVT head. Never tried one, but was just thinking, maybe if you take the overall dimensions of an old box 8-10 SVT cab, divide it by 4, add 3/4" for the three more new sides and make 4 separate sealed boxes that were 16 ohms each (2-8ohm in series 10s). The just daisy chain them all together for a 4 ohm load. The original SVT cab has 4 sealed separate compartments anyway. There's a lot of talk about the weight of the 8-10, over 160lbs? If this worked,it would solve the portability problem.