The impedance curve is not the whole story of a speaker. The M80's are very efficient at 95db 1watt/1 metre and has only a few dips below 4 ohm,very easy to drive. Now look at a set of magnepans, they have almost a ruler flat 4 ohm impedance graph and 83db at 1 watt/1 meter now thats a tough load to drive. As stated most any modern amp will drive the M80's without trouble. If sustained ,extremely loud music were being played,then a person may want to add some active cooling to protect delicate electronics. My experience is that the bulk of the movies out there only require short bursts of power for action type scene's not sustained power for the whole movie. Also the bass requires the most power from the amp and most if not all of us use a powered sub to take the load off the main amp. I dont see 4 ohm being a requirement to own a set of M80's imho.
Last edited by Socketman; 02/21/13 12:16 AM.
