I've read a few threads on here with regard to crossover frequencies, but it I haven't as yet found a definitive answer. I'm hoping that someone out there (or Tons of Fun as I'm hoping he's picked up on this thread ) can answer me something in laymans terms... Recently purchased the MS Premiere package. Bloody good speakers. With regard to the sub/sat crossover - and seeing that it's my first venture into Home Cinema - I have no frame of reference to know if I've set it up 100% correct. Everything sounds good, but I just want to be sure on something... The frequency range on the satellites is 100Hz - 20kHz. The frequency range on the subwoofer is 35Hz - 150Hz. 1) The default sub crossover setting on my Denon 1905 amp is 80Hz, so would I be absolutely correct in saying that the sub would only produce sounds below 80hz and that then I would have a hole in the 80-100Hz range (i.e. 100Hz being where the satellites pick up from)? If this is the case then why don't MShort say in the user guide that the crossover MUST be at least 100Hz? (I'm guessing I've assumed something I haven't) 2) Supposing I set the crossover on the amp to 100Hz, I may as well then set the crossover on the subwoofer to it's max setting as it's overruled by the amp 3) I've set the crossover on the amp to it's lowest (40Hz) and highest (250Hz) settings and can't really tell the difference in bass output. Admittedly, I only had a very quick test - but is there a decent test out there I can perform to properly calibrate my crossover? Cheers, as always, for any advice!