well, first... they're severely low-end limited. haven't seen a center speaker that goes to sub-40 hz @3db. second, for economic reasons they're not that practical. wharfe 9.cs na lang, a pair would cost about 11k already, in the direct vicinity of the diamond 9.5... an excellent floorstander. but this isn't to say you can't use them as such. i myself would be interested to hear maybe an all 9.cs setup, with sub syempre.