FLAX MAKING THE ANCIENT CUTTING-EDGE
Paper, aluminium, rubber: all common materials used for speaker cones. But the ancient material used by the Egyptians as a protective cloth for mummies?
The F cone takes on a sandwich structure: 0.4mm of flax fibres enclosed in two 0.4mm layers of glass-fibre. Flax combines three sandwich-material must-havest good self-damping, low density (it's hollow and half of fiber glass weight), and low elasticity (similar to kevlar and ideal for making the sandwich stiff). Unlike the hand-made glass W cone, the F cone is geared towards automated production. And, handily, France is Europes main Flax cultivator.