Hey dakos
Thanks for the reply
I have read that dampning factor is not that important anymore compared too years ago.
A dampning factor over 500 should be just fine, the cts 600/1200/2000/3000 have a df of 3000, powertech is 1000.
The Crown Studio Reference 2 has a df of 20000, the worlds highest....but have read the cts 2000/3000 has an even better control over the woofer, and the guys reason who wrote that is the bca.
I have looked at your link, it don't understand it too good....my hifi/pa knowledge is not that good:)