Sure, sometimes a cheap speaker will sound bad by itself, due to distortion, and an array of them can sound good.
But, all things being equal, an array of stellar drivers will sound better then an array of 49 cent MCM specials.

THAT is what I am saying.

Can we please get this thread back on track ?

I am NOT anti line array, quite the contrary.

Can we get back to looking at the problems I am having getting my speaker to sound right ?

I have two ten inch woofers seperated by about 54 inches center to center.

How far up can I take them in frequency at 24 DB per octave before interference patterns become severe ?