Well I have them! They are in dire need of refinishing. Corners are pretty rounded off from the miles, but I'm thinking of patching and squaring with plastic wood, sanding and repainting. Did Altec ever make beige VOTTs? I think they would blend into the scenery better where I'm going to use them.
The 421As were nice, he said he had gotten a number of cabinets with drivers years ago and had sold most of it off. The drivers have been reconed in STL by a guy named Lloyd something, apparently The Man in STL, and stored away without actually being used. Based on a tiny bit of research I learned these are instrument speakers and may not go real low. They certainly are beasts and I would not kick them out of bed.
However, I have some heavy 15" CTS woofers and would like to explore using them, or if that doesn't work, see what else AKers may have. I'll probably start a new thread for that. I've seen woofers matched to such cabinets here on AK but I don't know how to actually do it. Where to find specs on this cabinet, first...I'll be tapping the Altec gurus!
Thanks for the tip Sam. And Cubby, I'm going to tinker with these, if they don't work out I'll be in touch.