Originally Posted by
Zilch
If the two center ones are playing mono and both aimed forward, they'll majorly interfere with each other.
Consider the directivity spec. Horizontal coverage (-6dB) is 70 degrees.
I'd keep the centers horizontal, woofers at center, rotate the mid/high horns into the normal vertical position, angle them out at 67.5° with respect to each other (total included angle), and then tilt them down 25° to 30°. The vertical coverage (-6dB) is 50°. There seems little point in bouncing half of that (500 Hz to 16 kHz) off the ceiling other than to compound the problem with spurious reflections....