Thanks for the great pics. You guys can look no farther or need to open up your cabs for any dimensions ..I can get all the info I need off the pics. Thanks for all your help and input in my search. I Know this is a "Sunn" site but last month I designed and built a 4 x 10 cab that looks basically the same as the cabs in your pics. The only thing I did different is, I left out the center divider that separates the 15's and at the top and bottom rear of the cab I put a 45 degree reflector panel to help move the sound to the denter port.
The cab measures 30" tall x 25.5" wide x 16" deep. I loaded it with Celestion Bass speakers , wired it up for a 4 ohm load. This is undoubtly the best 4 x 10 I've ever heard and I've owned many of them from David Eden , Trace Elliot, Ampeg and Mesa Boogie ( bought for my son) . It growls and rocks like no other 10. If you heard it , you would swear it was coming from a 12 or a 15 . If anyone would like to see the pics , let me know and I'll send you some. BTW, my son ended up with it and sold his mesa and I've got 2 more orders from people seeing and hearing it. So, I will get started on the 2000S cabs (2 of course) later this week.