Thank all for the input.
I hope Mark is reading this thread and could give us what he though about horizontal placement of LCRs Cats.
Hi chayut, The Catalyst 12C is designed to also work very well when set on its side. The differences fugueness speaks of has much more to do with the height and location of the speaker relative to the ground or cabinets below. The majority of this difference is related to the effects at the lower end of the speaker's range (below ~500Hz) which is greatly affected by the placement of the speaker in the room. This is where the various room correction systems, such as ARC, can be very useful to balance these differences which occur in most all rooms to some degree. By far the AT screen and identical speaker locations is the most ideal for sound, but once the solid screen is decided, the best matching center, especially when it's the same speaker designed to also operate on its side, that will be the best way to go, and I've heard it sound great many times over.
Seaton Sound, Inc. firstname.lastname@example.org 773-290-8436