You can also contact Axiom and get resistors to put in before the tweeters that will attenuate the highs a bit.
I came across a post I cannot remember where right now, that Alan replied on. He mentioned they used to send out resistors for the older Ver. 1 M80's. However, since they changesd the driver and crossover settings in the mid/tweeter frequencies for V2 they found it toned down the highs and helped in the mids.