I have talked to Danny about the Carnegies a few times and he said they are very close to his N Series lineup, with only the midbass drivers being of different manufacture so needing a slightly different x-over, but they should be solid speakers. I heard the N2X before and thought they were excellent, and actually just asked him about the CSB-1 speakers yesterday too
*Edit - I noticed the price was even lower than the last time I talked to Danny, so I *just* ordered a pair of CSB1s