[quote name='Bill Fitzmaurice' post='413831' date='Feb 19 2009, 01:20 AM']Drivers mounted side by side leads to comb filtering in the high frequencies, and of more significance halves the dispersion angle in the midrange compared to a single driver or a vertical alignment of multiple drivers.[/quote]
Gen question, not a flame: Why [i]is[/i] vertical better than horizontal? If two speakers are adjacent, surely the comb filtering is going to occur irrespective of their alignment? If I drop two stones into a pond, the ripples will intersect at some point, wherever I drop the stones.
You could also argue that in a 4x10, 2 pairs of speakers are, in fact, mounted vertically. Does that offset the same two pairs that are mounted horizontally?
If this is the case, would 2 diagonally mounted speakers be 50% better than horizontal but 50% worse than vertical?
Also, on that basis, is there an optimum space between two adjacent speakers? Or would it simply be better to use only one speaker to avoid comb filtering altogether?