Center channels: why only horizontal arrays?


Why not a 'conventional' vertically arrayed speaker for center? Is it ascetics only?
pmcneil
There are speaker companies that will not release a center speaker because they feel a horizontal speaker is too much of a comprimise over a vertical speaker. They also do not have enough room to make a proper vertical speaker for HT.
I'd like to see someone like JL Audio design about three sizes of center speakers with room correction. They probably need to be powered, fit flush below various monitors with a special cabinet, and allow for highly variable tuning.