John you have La Scalas? I tried a couple of Mods to my Heresy center but it was never right.I even tried 2 Heresys for the center.I just finished my center channel prototype. I am using 2 K-33 woofers in a 6 cubic foot vented cabinet. The Midrange is a K-400 with a K-55v driver. The tweeter is a K-77. I tried several speakers to match the timbre of K-Horns. There is no match without the K-400. I now have a perfect timbre match for my K-Horns. I bet it would work great with La Scalas.