I just got an email from sonus faber...
Dear Nikos,
when we've developed Auditor Elipsa speakers, our R&D dept. was looking for a 'allround' unit, good as a rear or rear speaker, with the same Elipsa driver technology.
Kind Regards,
Customer care
Sonus faber S.p.a.
Via Meucci 10
36057 Arcugnano (VI)
Italy
I think they wrote "rear or rear" instead of "front or rear"
Nikos