I'm into buying music and listening now. It took me 18 months to learn everything I needed to build them, and another 18 months to actually built them. I'm not into squeezing another 3% better out of them, that I might or might not hear at my age.

The synergy of the speakers required domes. I prefer the dome sound to other kinds of tweeters. 60 of them provide an unbelievable treble footprint that has to be heard to be experienced. 16 planars or ribbons simply don't match up.

Marlboro

• Calipso Line Arrays