Unless you have direct access to the output of the integrated amplifier, nope. But you can measure the sound pressure with an appropriate device, in dB SPL, typically with a 1kHz input signal and at 1m facing the speaker.
Assuming the rated 130dB SPL is obtained at 1100W RMS, at 1/8 of the power, that would be -9dB, thus theoretically 121dB SPL. So if what they state is correct (or at least if I have understood them correctly), you should get ~121dB SPL when the speaker is itself drawing 250W.
If you're going to do this kind of measurement, do not stay close to the speaker. 121dB SPL is VERY loud.