I just bought a multimeter too and have been breaking in at around 10V with a 20-30hz sweep. As far as settings go, I'm not sure as I don't have my meter in front of me.
I can't wait either. I have the tuba finished with the driver installed sitting in my garage. The access panel is finished and needs to be screwed in once I test for leaks. I finished with everything after work around 10:30 last night but my wife was asleep. She's letting me keep the behemoth in the family room (at least until she sees how gigantic it is) until we finish the theater in the basement so I decided not to push my luck and fire it up for a test run. I'll have to fire it up tonight though and post impressions. CAN'T WAIT!
Speaking of firing it up, when I'm playing stuff with really low content like WOTW etc that gets down to single digit frequencies should I taper back the power I'm sending to the sub? I'd hate to bottom it out and damage it. Is a HPF necessary or should I just let'er rip?