I just got this a couple of months ago from fellow TB'er nologic, and then I got an Ampeg 410HLF! I can't justify having two cabs right now, and the Ampeg suits my needs better right now. The PH112 is a great cab, and it is deceptively loud and punchy. You won't be disappointed!
I'm mainly looking to sell, but shoot any trade offers my way (+ or - cash, too).
I've attached a cell phone pic (next to a guitar for size comparison), but the original thread from nologic has some good pics, too!
Here is the original thread: Mesa Powerhouse 1x12 cabinet