As you all know, in best-case scenarios we measure loudspeakers at the NRC in Canada (see recent Magico S5 review, upcoming speaker measurements from Joseph and Bryston). The Kaweros! are large and heavy speakers and in this case we did not measure them. I therefore examined the detailed data provided me by Rainer Weber at Kaiser (I asked him a series of technical questions I had about the loudspeakers, which he was more than happy to provide answers to). I then took his explanation/data to two other experts who I trust. The main feature I wanted examined – because it was the most unique in my experience – was loading the midrange driver with a passive radiator. The explanation, perhaps surprisingly, passed the smell taste to all involved.
Jeff,
Are you allowed to post the technical data that Kaiser sent you?
I remember that the Sonus Faber Amator 2 loaded the midrange driver with a back passive radiator. The effect of radiation through this type of back radiator was also studied in the Extema - but in this case they fitted a thick non resonant plate over the large B139 passive to control it. Did your experts comment on why the Kaiser should "sound big"?