In Reply to: Help needed for old JBL D131 and new mr/tw horn posted by Jonathan Z on December 10, 2003 at 10:47:22:
Pi alignment has nothing to do with the crossover frequency. It is a ported cabinet alignment like B4, QB3 or C4.Maybe others will chime in, because I have no experience with your chosen Radian tweeter. I can only say that I would generally prefer to push a subsystem up in frequency than down, if a compromise in this regard has to be made. This is especially true of modern compression horns.
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