What is the optimal speaker setting? The Yamaha's YPAO detects both my Kef 2005.2 Eggs (rears) and ProAc Response Hexas as "Large", even though they are all spec'd to go down to 80Hz (and the instructions for the Kefs say that they will be damaged if the Large setting is used protractedly). YPAO also suggests an 80Hz cross-over. There are two options: (i) use the large setting and take advantage of the apparent capabilities of the speakers, even though they are small; (ii) use the small setting and don't overstress the speakers; let the subwoofer take the strain. What are the pros and cons of each? The KEF woofer also has settings for music (what I normally use) and cinema and a 12/24db setting, that I don't fully understand. Should I set it for 24db to keep the woofer in its place? A further variable is the subwoofer boost that is, if I have understood correctly, recommended for Dobly Digital and the slightly different boost recommended for DTS. Does this happen automatically?