THE GREAT MULLARD MAGIC BLOG — HArold Leak

Brilliant photo this, taken at a 1950s Hi-Fi show.  I did wonder what these two talked about...   "My ESLs are bigger than your Sandwiches."   "Yes but my golden 20 Watter is more powerful than your muffled monoblock!"  Whatever, they do look happy though!    

Harold Leak (HJL)  had a thing about aluminium and why not indeed as he was a true alchemist in his ability to turn aluminium into gold. Harold's genius led us to the Leak Sandwich Speaker where the cone of the woofer was manufactured by sandwiching two cones of aluminium with an elastopolymer filling to create a very rigid cone.     This speaker technology was first marketed in 1961 and continued in various iterations until 1975 receiving great acclaim from many audiophiles and broadcast monitor users alike, for me though, I found the sound they produced both chesty and brittle, there...