Hi all ... After spending some time modelling out these ten inch drivers, and using the available information, assuming the amplifier and one's house electrical system could deliver the needed power, here is what the Sub 2 can deliver for max output, one meter outdoors ....
10 Hz - 103 dB
20 Hz - 115 dB
32 Hz - 121 dB
50 Hz - 125 dB
60 Hz - 126 dB
In order for this unit to deliver 112 dB outdoors at one meter at 10 Hz, the drivers would have to move 5.4 inches, peak to peak.
So yes, it appears that the specs are fine at 60 Hz, but that room gain is factored into the 10 Hz spec.