Have just 'side graded' my B&W DM 603/601 comibination for Eggs and a PSW3000 from Kef - pressure to get ird of those 'big ugly speakers' as part of a room layout change. Never had/needed a Sub before as 603's did just fine. Sub arrived today and have plugged it in. At the moment anything above one bar on the volume level indicator starts to 'boom' quite badly - using opening sequence of Toy Story 2 to test bass. The manu talks about altering the frequency and the phase control up and down to get an 'ideal crossover' - I have no idea how to do this... Anybody else with similar setup ? How do I set these levels to get a flat response ? Currently using 5th egg as centre but Q9c should be here soon if that helps.