Note that the db's are only to determine frequency response.
At full tilt, the system's capable of over 125db's....measured from listening position.
That means that not only are you shaking, your house is shaking (it's using the basement as an enclosure), your lawn is shaking, your neighbours are definetely shaking, the low-altitude planes are shaking, frick everything's shaking
BTW: To truly have enough power to motivate those Shiva's, you'd need at least 3000watts RMS.
:Q