30hz Sean?! Damnation man, that's spectacular for a Scala! Can you share those mods, or point to a URL? My Scalas drop off very sharply after 50hz (using a ratshack SPL meter in a fairly large space with no sidewalls) in their slightly modified form. I'd love to pick up +10db down at 30hz! I've had mine on Audiopoints, but I found that it seemed to actually drain the bass energy more directly into the (wood) floor (points down). The imaging improved, but I did not find it improved the bass. Results might differ in a carpeted room. I've also been experimenting with putting a granite slab beneath the speakers, as well as using cones and slab. I liked the combination of slab and audiopoints best, but any improvements in bass were subtle. I would think reinforcing the cabinet/baffle might help tighten up the bass significantly. There's a guy doing wonderful looking rebuilds on Scalas back east who has designed an interesting reinforcement piece that he inserts into the front of the baffle like a large flat V-wedge. The effect is that it couples the V of the baffle to the walls and vice versa. Seems like a mod like that may be a good way to go for improving bass. As far as a sub, I've been using a friend's ACI Titan which can be had occasionally for around $700. It works quite well with my Scala's and is very musical indeed. There's currently a nice maple one for $1k which is kind of high. They're a small company putting out solid products IMO.
Marco
Marco