I don't know but my Altec Valencias have a nice overall presentation and they are vintage; 1967, does that qualify? One other thing; have you found anyone who can quantify the sound of a speaker technically speaking? If by vintage you mean the sound people hear from vintage speakers; or some kind of frequency anamoly? If I think of vintage I think way back to KLH or Advent; maybe anything Henry Kloss designed? That would be considered vintage I think.