The Westrex 3D StereoDisk System

Journal of the Audio Engineering Society, March 1964

Presenting the significantly redesigned Westrex 3D stereo cutting head and accompanying amplifiers…

C. S. Nelson and J. W. Stafford

Technical appraisal of existing systems indicated requirements for improved response, increased efficiency, greater stability, and better power handling capabilities. A redesigned cutter and amplifier embody these improvements and incorporate practical operational advantages, typical of which are self-aligning styli and front-panel amplifier adjustments. Plug-in equalizers assoviated with cutters ensure constant velocity with cutter interchange. The new amplifier is compatible with new and existing cutters.

Source: Audio Engineering Society