I have to amend my previous stance on this...
I got a call to do some double bass session work this coming week, so, I've been messing with the ML112's while I try and get my chops back to speed.
They actually work just fine for DB, and I like them. ..I'm not sure how I came to my previous conclusion that I didn't; but I'd wager that, in part, this comes from having played these for several months and letting my ears re-adjust to them. They do their thing a bit differently than the other cabs I've been using, but, they do what they do quite nicely, and actually feel like they have more top end than some horn loaded cabs....freaky how they do that.