Subwoofer CEA 2010 measurements question

paul8

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Preamp, Processor or Receiver
Yamaha RX-A3080
Front Speakers
Jamo
Subwoofers
REL
I'm doing in-room measurements on a couple of my subwoofers, REL and KEF, I'm getting sensible results for frequencies 20-50Hz, but 63 Hz somehow makes no sense.
At 63 Hz REW shows THD exceeding CEA limits even at very low levels, and for both subs, which makes no sense to me, since 50Hz results are just fine. What could be a problem here? I refuse to believe that both subs cannot pass CEA at same ferquency at super low SPL.
Thanks for hints.
 

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  • kef12b_cea_63hz.jpg
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