The applicant has devised a turntable platter for record players, consisting of two layers of glass and plastic lying one on top of the other. More precisely the plastic layer can be of a thermoplastic and/or thermosetting material such as polycarbonate, polyacrylic, polystyrene or otherwise.
The glass guarantees flatness, rigidity and pleasant appearance of the platter, such features not always being obtainable from the already known metal platters, while the plastic, for its part, guarantees the light weight associated with such material.
The glass-plastic combination in the turntable platter represents considerable progress in the particular industrial field as it guarantees reaching several results, including, most especially, the absorption of spurious vibrations, and secondly, optimum sound reproduction quality.
More especially, the first of these advantages is such that it is no longer necessary to use mats hitherto added to the already well known turntable platters.
The two glass (5) and plastic (2) layers can be joined together by means of adhesive (3) or pushed together along the edges; they can also be of different sizes and shapes.
It is advisable that the turntable platter obtained from said layers be provided with an upper layer (6), preferably less than one micron thick, of conductive material, either dielectric or metallic, in order to allow earthing the platter.
The outer rim of the platter is transparent in order to permit immediate visibility of the indicator lamp used by the stroboscopic device, hence it is not necessary to use an intermediate light deviating prism.