get a limiter on there... and make sure you got plenty of power in your amp too...

you can easily nuke monitors with an amp that cant give it nice solid sinewaves even if they are rated at 3 times the wattage..

If you get a decent amplifier you wont be able to destroy your monitors even if you put the resonance on somethin up full whack and your ears bleed..

active monitors suk most of the time also..