Seems the site and what's on the speakers is off in general. The serial numbers on my speaker boxes claim my M100's are 8 ohm speakers while the site says 4 ohms. They also claim they're M100 v3. Seems these would be v1 as they're a new model. Likely left overs from the M80 entry in the system since it seems the box spacers are the same. Not sure what the 8 ohms is from though.