Ahh, now we are getting somewhere, I found this blurb on site advertising a book. Please read.
"In a stereo music system, a subwoofer handles frequencies below what the main speakers can handle, typically under 80 Hz. In a 5.1 Dolby Digital system, however, the subwoofer has an additional purpose: to handle the low-frequency effects (LFE) channel, which is the “.1” part. This is a distinct channel, not the low frequencies of the other channels."
So again I ask; if the fronts are set to large and subwoofer to yes is it then true that low bass is going to the fronts but not the LFE channel? Likewise if subwoofer was set to no then the LFE WOULD be sent to the fronts? Is this a correct interoperation?