So...had practice last night with the new cab. I had it kinda low, just sitting on a 4-wheel dolly, but I was 10-15 feet away, so it was hitting me.
How did it sound? Pretty dang close to the two 1x12s actually. I think a bit more sound is coming out the open back due to the tandem speakers moving around in there, but the tone itself is surprisingly similar. Go figure...of course, I used the exact same two speakers (Eminence 1218 legend and WGS G12C/S), which are both v30 knockoffs with a smoother top end than the brittle top of real v30s.
Yamaha uses a combination of the Legend 1218 and a Tonker in their 2x12 cab. I may consider a Tonker later
The dang cab fits absolutely PERFECTLY in the back of my little Ford Fiesta, so I guess I gotta keep it
I put the cab, my pedalboard, amp head and backpack full of mics/cords in the back and just used the entire back seat for 4 guitars. I'll get a pic of how nicely it all fits back there.
All in all, it's heavy, but not terrible...the H&K Grandmeister fits perfectly on top when you flip the cab vertically (gotta put some feet on that side...hence, the dolly). I'm happy I didn't have to tweak anything, I'd hate to have a bank of patches for each set of speakers. Here's a couple quick pix of the cab sitting on another cab and the back before I wired it up