That's from the GR Reserach Klipsch RP-600M mod (Amir has measured) isn't it? To me it looks like this particular GR Research mod looks good and also Amir concluded "Overall, this is a job well done by GR Research and I am going to recommend it to owners if they are not inclined to use my software EQ fix.". Original response measured by Amir looked far worth:
Yes, this is one of the earlier Klipsch speakers, and no dispute that the GR upgrade is an overall improvement with the caveat of EQ as simpler alternative.
All this goes to the point about good practice. Not sure about the earlier cases, but the Klipsch tower had known measurements to use a baseline for comparison. Danny should have taken time to compare EAC's measures vs his and then (hopefully) would not have made the same claim (and applied a different fix?). As it stands, the GR results are not credible or trustworthy.
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