I have to disagree with the assertion that manufacturers do not let us know what drivers are in their speakers. It is true, however that many do not. But, every day, I see TOP maunfacturers pointing out that they use brands such as Morel, Vifa, Dynaudio, Scan Speak, Audax, Focal, Eton, Seas, Cabasse, etc. with PRIDE. They often use it as a selling point. Want names? In no particular order: Vandersteen, Coincident, Vienna Acoustics, Eggleston, North Creek, Wilson, Proac, JMlab, Hales, and Joseph.