While carbon fiber is perhaps best known for its applications in the automotive and aerospace industries, new uses for the exceptionally sturdy but lightweight material have increased in recent years. The English audio manufacturer Wilson Benesch has been experimenting with the material, employing it in the new Endeavour stand-mounted loudspeakers (about $43,000 per pair), which push the limits of speaker design. In order to reduce the cabinet resonance caused by the drivers, the internal structure and shape o…