new york times do speaker test with measure. but how can measure such high levels in bass range 40-63 hz

[bennybbbx]

https://www.nytimes.com/wirecutter/reviews/best-computer-speakers/

the FR range from eris 3.5 and kali lp6(which i own) look realistic. but my kali lp reach in bass 50 hz when i measure not more as 83 db when i place tthe lp6 in the corner and the microphone 1 meter away and in a radius which do largest bass. the bass do lots distortion and port noise then

the write for the eris 3.5 93.5 dB from 40 to 63 Hz . (my measure 72 db)
and for kali lp6 115.7 dB the range 40-63 hz they named mid bass output.

realy how they can get such values ?.

 

[pozz]

They are using the CEA2010 method for bass. It reports burst/peak levels, not RMS. Your numbers include room effects.

• A manual from one of the authors: http://www.brentbutterworth.com/cta-2010-measurement-manual.html
• Shorter explanation: https://www.audioholics.com/loudspeaker-design/2010-subwoofer-shootout/2010-subwoofer-shootout