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I have corrected my post: I meant to write "the consumer may end up ruling out a speaker which he might have liked"
In response to your question, my last four speakers were: Spendor SP9/1s (loved them, would probably rate poorly), B&W 802 S3s (ear-piercing hated them, would probably rate very high), PSB T2s (liked them but "sparkly" treble and "constrained" bass at normal/high levels, would probably top passive), Stirling LS3/6s (really like them but rather "loose" sub-bass and limited extension and a bit "forward-sounding" in my current small and narrow room with untreated walls, would probably rate poorly).
Very interesting, thanks.
I think the LS3s would rate quite highly. Horizontal and vertical off-axis peaks/dips are complementary, which should result in a fairly smooth PIR, and on-axis/LW is very flat.
PSB would also rate well I think. The sparkly top-end is apparent in the measurements, wouldn't you agree?
Not sure about the B&Ws. There are some basic measurements here but it's hard to conclude much from those.
The Spendors also seem to measure quite well: you have to keep in mind that those graphs have a 19dB vertical scale!
If I stretch its on-axis response to the scale that the spinorama uses, it ends up looking quite good. Here it is side-by-side with the KH310:
And keep in mind that the Olive score discounts everything above 16kHz (IIRC), so the early HF roll-off would not be a problem.
The measured in-room response there also seems to look similar to what you'd expect would give an okay Olive score, too (keeping in mind the measured response in a real room is always going to be a bit shabbier than the so-called PIR):
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