Well, The only thing you lose is Stereo width in the traditional manner.
Choice of material is important here.
A friend has an F80, and typical of him, he found its limits with some Bass heavy Rap (as I remember) played really loud. (above 80ish)
The bass Cliped itself as the laws of phyisics applied themselves. There is only so much you can do and A Sub would have changed things.
This is by no means a complaint or criticism of the F80. IMHO it is a truly remarkable piece of kit, the longer you live with it the more you appreciate it.
Cheers, Chris
