Dumb question: Suppose one were to make an array using only Altec 755A speakers? Wildly expensive ($500 each?) but suppose one did. Would it work or would the spacing between centers of the cones ruin the effect. I know the near field of the speaker was marvelous and it had wide dispersion. It also was intended for minimum baffle volume -Dick
Would not work very well beyond 2kHz as your center to center distance between drivers at that frequency (just a guess, I didn't do the math)would create lobing problems and combing artifacts.
The full-range and wide-range driver questions come up fairly often, the answer is the same to all of them. C-T-C spacing versus frequency cut off is the same regardless of driver, though you can cheat a little more with spacing between ribbon/planar tweeters as most are much more limited in their vertical axis dispersion as compared to domes...
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