Just picked up a Greenboy Dually bass cabinet (2-15s, 60 lbs.) today, along with an old Acoustic 370 head. Plugged it in for the first time, and all I can say is Wow! This setup is a beast. The cabinet is switchable between 8 ohms and 2 ohms. I will definitely be ready for my next arena gig. Way too loud for most gigs I do. I was able to trade some cabs I wasn't using and a little cash, so I thought I would give it a go.
Not sure how often I will gig this rig, although I probably will use the cabinet at some gigs. It's very portable, and I like how the height of the Dually gets the sound closer to my ear than my 2 112 cabinets will.
If anyone else is using a similar setup, let me know your opinions!