Brace Top and Rim Studies - Internal R&D Comparison of Numbers

This is an internal Ovation research and development document dated July-August 1977, comparing physical measurements and stiffness properties of various Adamas and acoustic guitar tops, braces, and components. The documents include detailed numerical comparisons of top factors, bridge weights, brace sets, and end numbers across multiple guitar prototypes and production models. The data tracks new core versus old core guitars, acoustic versus A/E models, and production Adamas material with 60-degree tops.