If you have no subwoofer in your system and all your speakers are set to large then I guess all the low frequency sounds go to the relevent speakers. If you have a subwoofer connected and your speakes are still set to large does this mean that the only sounds going to the sub are the ones programmed to do so via the 5.1 soundtrack or is a simple crossover used to send the lowfrequency sounds in the sub. I realise that if you have any of the speakers in your configuration set to small then those low frequencies will be sent to the sub as well. What is best??