Just curious. There seems to be growing interest in amps that can run at 2 ohms and run many speakers at once. Also devices such as the Speakermate which came about for the same reason. Just wondering if there is a reason why 70 volt applications have been restricted to background music and paging applications? Is there a reason why it doesn't work for PA stsyems, bass rigs etc? It seems that so far it has only been used in situations where audio quality isn't all that important so I'm guessing the answer lies there? Anyone?