Hi, Forgive my ignorance here but Im a bit of a home theatre virgin and dont really know how they work! Im wanting to get an Arcam avr250 for music / DVD. I already have a pair of Linn nexus 250s that I wanted to bi-amp and use as the front left & right / stereo speakers. The room size is modest and space a premium so was thinking of getting some B&W M1s for rears and centre . I really dont have room for a sub. Any view and comments?! In stereo, Im happy with the frequency range I get already from the Nexus . But Im not too sure how it works in 5.1 sound if you dont have the .1 bit there!. Are the whole range of frequencies sent to each speaker or are they filtered out and only sent to the sub? ie. if I didnt have a sub, would the nexus sound full or would they only have the higher frequencies given to them? Also, if there are say low frequencies which may be sent to rear left during a particular scene if there was a sub I assume these would go to the sub along with all the other speaker lows if you tell the system you dont have a sub, will the frequencies still be sent to the speakers now Im getting myself confused! I suppose Im asking will the nexus front L & R act as a type of sub during 5.1 playback! If anyone can shed any light to a complete novice, Id be most grateful!