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In Reply to: RE: Why do line arrays using directional speakers require shorter lines for similar near field performance? posted by Inmate51 on April 26, 2017 at 13:56:17
About 7 years ago when I investigated this there were several linear array models which had a cardioid LF section in their flown cabs. Because of their improved LF projection it was suggested they would require a shorter line as compared to non cardioid models for similar near field LF performance. I could never understand clearly the science behind it. It would now take considerable time to try to recollect all that info....some models are not even made anymore. But if I can recollect that info IŽll post it
""Manufacturers of directional line arrays claim this"
I asked a simple question: Can you cite an example or three?
I was suspicious of that claim myself in that the forward efficiency of cardioid designs is usually reduced along with the rear projection. But I do remember the claim being made especially with horn designs. It would take time to recollect that info. But if I can recollect that info IŽll post it. If you desire investigate the subject yourself. It would be models with cardioid or horns in their LF section models. I think Nexo, Meyer? had models with cardioid LF. I would need to locate the manufacturers and the models and read all their literature and fine details again but have no time at present!!
"I do remember the claim being made especially with horn designs. It would take time to recollect that info."
I hear ya. Many years ago, I had a Woodwinds Methods instructor in music school (and bowling team partner and pizza/drinking buddy - go figure!) who told me "Remember what's important, and flush the rest".
Still, if you're going to make a public assertion/comment about a manufacturer claim, it's best if you can cite the manufacturer. Otherwise, it's just more Internet bullcrap.
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