Thank you for the quick and detailed explanation. I'm using Quad 11Ls for my fronts and Quad 12Ls for the surrounds along with a Quad center channel. I'm using 80 for the crossover in the menu options.I have a smaller setup in another room with the same universal player and an Arcam 200 receiver, matched with Quad 11Ls for the fronts. The Sacd sound is stunning! Thanks again for your help.