As contented owner of Def2s, just a couple of things. Firstly, I've always loved the 'tone dense' sound of the Def2s, even though this is at the expense of best possible treble extension; so is the new Radian tweeter on the Def4s an improvement in this area?
Secondly, the massive bass output of the Def2s have led to room nodes issues, but I've been able to better integrate bass from the speakers into my room using the SpatialComputer Black Hole attenuator. Does the use of the single downward firing sub really improve upon the 4 rear firing drivers of the 2s?
Regards, Marc