Thanks for the article I found it very interesting. My new outlook now will be to get a solo amplifier only if I do upgrade from the 60s to the 80s mostly for the purpose of driving them as I keep hearing that the yammies do not hold the 4ohm load as good as some others and again this is not my personal experience rather the hear<>say. Actually come to think od it I was running some other 4ohm speakers with this unit witn no probs whatso ever but than again they were much smaller and less powerful etc. Also according to some reviews I think all or most of the new yammies actually do not have any problems with the 4 ohms at all and it's more like a old habit to say. Hey if I knew evrything I would not be here! (I like that saying)