Originally posted by steveng
on alpine's offical site and ebay, they say 900w is the Max
. and 500x1 rms
ok. Since the subs you have are rated at 300rms and 1000max, I would agree with blackmagic that you should get the mrd 500. Usually subs rms is half of the max, but yours are only 300rms so you'd end up running your subs 100watts shy of their rms rating which isn't too bad. Go for it.