I have a set of Tannoy FX5.1 speakers connecting to a Sony 790 amp. in the sony manual you select either large or small speakers. is this based on the output of the speaker being LARGE or the size of the speaker being small. If I select small, the amp will transfer all LFE signal to subwoofer. If select LARGE, it will send bass signal to speakers, what about the subwoofer? If the DVD has a LFE signal then the amp should send the signal to subwoofer? can any Sony 790 amp users outthere help?