so...i recently have acquired a pair of MTX AAL2230s and i already have a pair of polk monitor 60s. my question is, in the vintage receiver world, how many watts per channel would i need to safely powere these guys? ive been looking at a technics sa-500 receiver to power these, which puts out 55 wpc. i know the MTX's take up a buttload of power. HELP. trying to find the right wattage is a headache.