I currently have the Vandersteen 2ci and do agree with everyone here that they have a rolloff top end. I also read that the tend to be on the warm side but i dont know if that is true. I personally think that the older are voiced to be a balance speaker. When I did a room response, I hve notice that it starts to roll of gradually maybe 6db/oct at about 8k.
Voicing the speakers was done right with the older Vandersteen as well as having time aligned.