Folks, you're looking at my next project. Telling people on the internet obligates you to actually get started, right? In short, my plan is to upgrade the stock Coral drivers in the Sansui SP-50 with Trusonic 80FR and Atlas SA-264. I want to suss out a simple high-pass for the Atlas tweeter, and along the way learn a thing or three about measurement, modeling, and how objective data relates to my subjective preferences. These cabs are smaller than the Trusonic drivers call for, but the ultimate plan is for these speakers to serve only as mid/high cabs. In the meantime, I'll get by without learning how low the 80FR can go. Hope y'all are into coming along for the ride.