As a recent purchaser of the KEF 2005.2 system, linked with a Yamaha DSPAX750, the system works brilliantly re sound effects (Independence Day, LOTR etc), but the centre satellite does seem to struggle with clarity of speech when there are other sounds (e.g. music) from the other satellites - speech is a bit muffled. I have tried increasing the centre satellite output but the problem is not really solved. Could this simply be a case of having to adjust the KEF sub-woofer crossover etc? I am a novice in the latter field and KEF's own documentation is less than helpful here.