Should not be an issue. Actually, the VP150 center and Qs8 surrounds are 6ohm, but most of the other Axiom speakers are 8ohm rated. As long as your receiver you select can drive 4ohm speakers, most Denons, HK's, and seperates, they can also drive 6 and 8 ohm speakers at the same time with no issues.

Randy

60's 150 350 4-Qs8's
Denon 2805



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