[quote name='Bill Fitzmaurice' post='813786' date='Apr 21 2010, 02:10 PM']Go either two 2x12 or two 3x10, in both cases with cabs that have the drivers vertically aligned. Use one at smaller gigs, two for the big gigs, and then with the two cabs vertically stacked. The result is far better than either a 4x12 or 6x10, and a much easier haul.[/quote]
I don't think Matamp's speaker cabinet philosophy and your own are very comparable. Pair of upright 2x12s will be in their repertoire, 3x10 not so much.
I actually asked for a similar spec to I suggested including port tunings, and they told me they couldn't help.