NEED HELP about Magnepan speaker


I may plan to get a Magnepan MG1.6 or 3.6. But I am wondering who is the different between MG1.6 (current model I saw on the offical website) and 1.6QR, are they the same or 1.6QR is older model? does MG1.6 sounds better?
And any maggie pro's know which models were quasi ribon and which were tru ribon? I beleive tru ribon is better compare with quasi ribon...right?
audiorichard
Its the same 1.6 that's been out for a number of years now. It has the quasi ribbon, the 3.6 and 20.1 are the only speakers in the magnepan line that use a true ribbon tweeter. It is true the ribbon sounds better up top then the quasi ribbon tweeter - however, it does not integrate as well with the rest of the speaker, its not as cohesive. The benefit of the 1.6 is a much simpler crossover network, because its a two way and not a three way like the ribbon tweeter equipped models. The ribbon equipped models also produce lower bass due to the larger physical panel size, however, the bass does not "slam" like a conventional speaker. So if there was any way to use a dynamic(cone type) bass driver, planer midrange and ribbon tweeter and have it be chohesive, you would probably have the best speaker ever made - assuming it doesn't look like a Gilmore.
the QR is more of a midrange driver that goes high enough to use for a tweeter also. The true ribbon tweeter is a superb high frequency unit but does not go as low into the mids. The QR is more rugged from what I have read.