I agree with Graham UK, they were in use at the Blackpool Festival in May this year, and I was also very disappointed with the sound, (As I mentioned in my report) it was too hard sounding and very unnatural as if the EQ needed adjusting.
Interestingly I have the Franz Lambert DVD of his Euro tour and the sound from the Bose is brilliant, however I did notice that he had controls each side of him which he altered to suit the style and type of music he performed, and I think (Although I may be wrong) these actually altered the EQ settings on the Twin Bose systems in use.
Anyway we will see what September brings.
Enjoy whatever you play.

Bill