anyone know what frequency those prefab mtx sledgehammer boxes w/ the 9500's are tuned to?

anyone know what frequency those prefab mtx sledgehammer boxes w/ the 9500's are tuned to?
which one? which model #?

the single 12 4 or 2 ohm 9500
Just got off the phone with my MTX guy, Scott.
The box your after is factory tuned between 45-48 htz.
The sledgehammer 12" 9500
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