T e c h n o l o g i e s
Ceramic-Coated Aluminium/Magnesium (C-CAM®)
Since 1972, Monitor Audio’s near fanatical commitment to excellence and innovation has received global recognition and acclaim. When we launched our R352MD loudspeaker - the first model to incorporate a metal dome tweeter - it caused quite a stir. Until that time, most metal domes were single-metal types made from copper or titanium and virtually all sounded unconvincing. The R352 used an aluminium/magnesium alloy dome and sounded significantly better and smoother than all of its single-metal rivals. This radical design formed the blueprint for successive generations of our C-CAM metal domes.
All the radiating surfaces of the Platinum drivers are formed from C-CAM, a material originally developed by the aerospace industry for jet engine components. Its properties are ideal for loudspeaker cones: extremely rigid, yet light enough to yield high overall efficiency. In manufacture, aluminium/magnesium alloy undergoes stress-relieving processes to remove surface deformation and molecular weakness. Once formed, the alloy cone is subjected to a high temperature anodic coating process, in which a layer of pure ceramic alumina is depleted onto its surfaces to give a completely rigid exterior. Conventional cone materials are liable to flex or twist in operation, producing a significant level of audible distortion. C-CAM cones have a much higher resistance to bending stress and therefore exhibit much greater fidelity.
