Although that is a problem, I think usually for most HT systems, there is a sub.

But on a related note, as I recall, with DVD-A, the .1 channel may at times carry frequencies well above 80 Hz and there wasn't a concensus on where to route the high frequency .1 channel information, when there's a sub in the system.

However, my information may be dated. Can anyone confirm if the .1 channel sometimes has frequencies well above 80 Hz, in DVD-A?