Any practical tips for accomplishing the desired shading for line arrays? I'm going to play around with a CBT to see if that design checks all the boxes for what I need. Looks good on paper.
The legendre shading (or Keele's polynomial approximation) is easy enough to calculate. I figured I could play around a bit with exactly how to group the steps to best fit the calculations, but to be honest I'm finding that more difficult than I anticipated. Using xsim for a first cut, it is easy to produce groups of progressively attenuated drivers by including more in each group, but this is opposite of what is needed where the steps become wider and/or number of drivers in each step decreases as you navigate up the line. I can tweak some with resistors here and there but obviously don't want to brute force the whole thing. Besides, the purely resistive element doesn't mimic the driver that well and the attenuation becomes somewhat frequency dependent. RLC elements to burn power would be more accurate but now the complexity increases further.
Aside from an active solution with dedicated amp channels for each or most groups, is there a methodical path to get there that maybe I just haven't considered? I'm starting to think it may help to use two versions of the same model driver, 4 ohm and 8 ohm, to facilitate this.
The legendre shading (or Keele's polynomial approximation) is easy enough to calculate. I figured I could play around a bit with exactly how to group the steps to best fit the calculations, but to be honest I'm finding that more difficult than I anticipated. Using xsim for a first cut, it is easy to produce groups of progressively attenuated drivers by including more in each group, but this is opposite of what is needed where the steps become wider and/or number of drivers in each step decreases as you navigate up the line. I can tweak some with resistors here and there but obviously don't want to brute force the whole thing. Besides, the purely resistive element doesn't mimic the driver that well and the attenuation becomes somewhat frequency dependent. RLC elements to burn power would be more accurate but now the complexity increases further.
Aside from an active solution with dedicated amp channels for each or most groups, is there a methodical path to get there that maybe I just haven't considered? I'm starting to think it may help to use two versions of the same model driver, 4 ohm and 8 ohm, to facilitate this.
Have you seen this thread?
Line array steering ?
there are several line array threads in the full range forum, including a CBT by Jim Griffin, but that one is active currently
Its easy to model a line array in Vituix and evaluate your shading. My own efforts show that the coefficients don't have to be precise or terribly accurate in order to be effective
Line array steering ?
there are several line array threads in the full range forum, including a CBT by Jim Griffin, but that one is active currently
Its easy to model a line array in Vituix and evaluate your shading. My own efforts show that the coefficients don't have to be precise or terribly accurate in order to be effective
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