Turbo, there have been other brands of 4ohm speakers with issues, even 4ohm bookshelf designs from AV123 (rockets, etc.)so it is not specific to Axiom. It is possible that the new offerings from Emo have improved. Also, keep in mind how many amplifier brands are out on the market, and you don't hear about them having issues with 80's.

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85