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Whomever Wants A Crack At It: I've run into a snag trying to design a line array enclosure around this 10" square DDS horn, namely that the recommended cutoff of 1600Hz is too high for correct coupling of 10" cones in adjacently arrayed traps. My math suggests a 1kHz crossover for minimum "correct" coupling, taking cabinet height & array angle into account. Yes I know, other manufacturers simply shlap a pair of 10's or 12's next to this horn and call it good, claiming that any vertical comb filtering is essentially inaudible (or they're crossing the horn too low). Unless I'm way off the mark, it seems to me that enough combing in either direction will become noticeable at some point. Also, I wish to avoid the hassle and expense of pairing smaller drivers next to the 10's and adding another crossover point. So, here's the question: Is there some known way to install a deflective or phasing device across the width of a flush-mounted cone driver to make it act like two smaller drivers, where coupling is concerned? I'll appreciate any input, even intuitive guessing! Thanks!
Follow Ups:
try a dipole(push/pull) arrangement for the tens. Do the math to figure the width of the enclosure based on at what fequence you want the 10s to cancel.
I keed, I keed! How about a 10-12" driver with more extended high freq response? How low are these supposed to go? Good luck to you!
SF- The problem isn't with the HF extension of the cone driver, but with the crossover point needed for coupling VS the lower cutoff of the HF horn. Arraying a pair of 10's and allowing for things like crossover rolloff and center-to-center distance to a driver in the next box requires a crossover point (in my design) no higher than 1kHz. The HF horn I wish to use has a cutoff of 1.6kHz, so I'm trying to find a way to bridge that gap without employing another set of drivers and crossovers. I plan on crossing to the subs around 125Hz, for a 3-way active system. Nice try!
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