From the looks of these 2 models they look exactly the same. How come 2 different models for the exact same speaker? Are there any difference in specs or build quality? Which is the newer of the 2 model? These are the Reference Series that came out in the late 90's and early 2000's. I am looking to buy a set, but would like to find out the differences so that I can make the choice on which model to get. I would prefer the newer one.

















