Vladimir Filevski
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But we do have measurement on many, many other professional compression drivers done from 105 to 112 dB at 1m - that is how we know the BMS 4590 is about the worst of them in the frequency range from 7 kHz to 20 kHz! On the other hand, we also know 4590 is about the best of them in frequency range from 500 Hz to 5 kHz!Aren't we comparing BMS 4590/92nd to JBL 4367's compression driver JBL 2430K D2 ?
Untill we have 112dB/1m measurements of other drivers, we don't know if they distort less, more or much more than BMS 4590/92nd.
As far as i'm concerned, this forum is oriented on home listening regardless of intended purpose of measured audio equipment. I personally couldn't care less how BMS, or any other driver, behaves/measures/sounds at 112dB/1m.
It was you who give the example of JTR Noesis 212RT, which uses BMS 4590 coaxial driver. Factory spec for Noesis 212RT efficiency is 98 dB/1W/1m. Simple mathematics tell us this: only 25 W in 98 dB/1W/1m gives SPL=112 dB/1m !!!
And the review (your link) says this about the amplification used in the review:
" I used a Yamaha R-N803 network 2-channel receiver (140 wpc 4ohm), a Cherry Amplifier 2-channel MEGAschino (600 wpc 4ohms), and an Acurus A200 (400 wpc 4ohm)." !!!
At least the reviewer do care how the JTR Noesis 212RT sounds at 112 dB/1m, and beyond.