I use Renkus-Heinz TRX121 speakers at the auditorium where I work . Factory literature states they have a 12" woofer and 1" high frequency driver with a built-in crossover set at 1.8khz . Power handling ratings are 250w RMS for the low end and 40w RMS for the high . The amp for the FOH speakers is capable of delivering 350 watts and sometimes probably do . My question is this , why haven't I fried the HF drivers if they can only withstand 40 watts or so ? Would the crossover have some kind of wattage limiter ? Thanks