The statement came right from the owners mouth to me over the phone. They claimed to have some M80V2's in their lab at the time and reported the 1ohm dip to me. Also, the topic has come up often on AVSforum.

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