You blow a speaker one of two ways:
- Constant overdriving that causes the cone to tear due to stress or your voice coil to burn up
- A clipped amplifier that's sending too much power
If it's just loud, you're fine. If you're distorting, you're probably still fine. Given these have built in crossovers and amps, they probably have some sort of limiting as well. Usually clipped amps only happens after the DSP in a live system, and is an error by whoever has set it up. This shouldn't happen in your case.
I say run 'em loud! If you blow a cone or voice coil, it was probably already weakened.