Had a pair of Leak Sandwich speakers . Very good sounding on low watt tube amps. Look them up. IIRC foil and styrofoam? Sorry about no paper ref.
Paper cone woofers died in 1962 .... a look back
Stereophile re-published an article from 1962 by Irving Fried predicting the death of the paper cone driver was soon upon us.
https://www.stereophile.com/content/farewell-paper-cone
Though much did not come to pass, it is an interesting read, which includes discussions of the near predecessor to Focal’s W sandwich cones.
Enjoy!
Erik
https://www.stereophile.com/content/farewell-paper-cone
Though much did not come to pass, it is an interesting read, which includes discussions of the near predecessor to Focal’s W sandwich cones.
Enjoy!
Erik