So, I finally took the 46 out for a gig (long story short, the few gigs I've played in the last couple of months have either been with the 112, Flex, or supplied backline).
While, even at living room volume, it's apparent that the 46 is a good cab, it really has to be heard on a gig to be appreciated. While it was wide and detailed at home -- no holes, really responsive to EQ -- for my tastes, I wasn't getting the lively-mids-feeling or kick that I like with the 112 and Flex. Set it on top of the house 410 last night (didn't run the 410, just used it as a stand to elevate the cab as Mike has recommended) and played it with my Kustom KXB 500 micro. No bass in the monitors, but some PA support -- still a significant portion of the house sound coming from the cab, though.
Unbelievably clear without being harsh. More clear than the 112 or the Flex, which is hard to believe. Ran it with the tweet on and off, and with the mids boosted and "normal" (mentioned previously -- my "boosted" mids are a bit hotter than normal, per a request I made of Mike when I had the cab built). Tweeter -- good either way, just a different flavor to the top. Mids -- preferred boosted (preferred that to boosting the mids at the amp), but good either way. Nice mids, by the way -- everything comes alive at gig volume, with no obvious transition between components, even with the cab right behind me. Mid presence and quality significantly improved over the 2nd generation 66 I had a couple of years back (that was a two-way cab, this is a three way).
Super-consistent sound moving around the stage (noticed when I walked over to show guitar stuff a couple of times and to communicate with keys and violin). 112 has great dispersion. 46, horizontal and elevated, amazing dispersion.
Sound from the stage didn't interfere with PA. On the contrary, it filled out spots in the house where PA coverage was inconsistent for other instruments. I let two guys I know sit in for a total of three tunes while I wandered the house and listened. Bass clearly audible at all times, without crowding the mix.
Voicing is different than the more traditional voicing of the 112 that I'm used to. More like hearing a big version of your sound D.I.ed through nice headphones, though that's not entirely accurate -- sense of space isn't the same, but the same kind of clarity. I'm sure there are other differences, but that's the analogy that comes to mind.
112 has more kick at bottom. Flex more punch in the chest and both have more grit in the mids, but the 46 was still nicely but not exaggeratedly present in the mids and very articulate in finger style and slap -- easy to steer the band -- clear in palm-muting (Flex a bit chunkier in palm-muting) and chording, and plenty loud with just that micro. Will have to try it with the sub but it'll be more a want than a need for most things.
EQ changes instantly obvious. Hand placement had a huge effect -- found myself playing with it a lot.
Cab's a different voicing and feel than I'm used to, but performed admirably on its first real outing.
And, yeah, I can see why some people double these for PA duty -- everything is there and everything is clear. I think it would be a great cab for upright, cello with pickup, stuff like that, as well.