Predicted in room response for Amir's spinorama analyze of LRS had been critized alot with reference to stereophile curve and Amir's own distortion graph, think often its hard to interpreet various ratios of plots scales to each other and therefor made them overlaid to same scales and corrected for their nearfield positioned microphones that cant see baffle dimensions is not infinite size when microphone sits so close, correction i used was thanks to member Joppe Peelen when he published curves of his own panel in room at 12,5cm and 100cm where i used their difference as the correction curve.
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Left one is LRS stereophile nearfield curve overlaid to spinorama and right one is filtered as told at beginning..
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Left one is LRS distortion nearfield curve of Amir overlaid to spinorama and right one is filtered as told at beginning..
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Other PIR curve of a smaller panel size is left one that is Joppe Peelen's own creation at 100cm without any filtering and tweeter passband, right one is the predecessor Magnespan MMG measured in room at 100cm by Dick Olsher..
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Think above tell we should be happy enough Amir own this anechoic wonder machine and share some more precise analyzes we can use to educate and reference/calibrate our own real world methods of acoustic benchmarks, had a hard try look for more PIR measurement into this thread because some postulate that over and over users PIR measurement show Amir's analyze is off for panels, but honestly the other Magnespan PIR measurement into this thread is really not for Magnespan LRS but other models so please forget that comparison as argument in those other panel are not same dimensions and technology.
Should there be some low end to hope for made below simulation of one floor boundary close to a line source using a Jeff Bagby spreadsheet and avarage of those 10 positions of a woofer piston to get a boundary correction filter, in the avarage grey curve..
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Above filter added to spinorama of Magnespan LRS based Amir's spindata..
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In quote below we have one member that ordered a set of LRS and we could hope for he would share a PIR curve down the road ..
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