The RST cone profile comprises a radial pattern of surface dimples. Our simulations and listening tests have proved that the dimples significantly increase cone rigidity allowing C-CAM/RST cones to resist mechanical bending forces, which can twist the shape of lesser cones and produce distorted sound. The strengthening effect of the RST dimples means that we can use thinner, lighter more responsive C-CAM cones, providing speed and accuracy but offering greatly reduced distortion. The RST dimples also help to displace standing waves that can propagate on the cone's surface.
