Classical Guitar Study - Sound Evaluation and Design Notes - July 1978

These are handwritten research and development notes from July 1978 documenting the acoustic evaluation and structural design of experimental Ovation classical guitars numbered #8, #11, #12, and #13. The notes include detailed sound comparisons measuring audio frequency peaks in cycles per second, qualitative assessments of brightness, clarity, bass response, and body resonance across the instruments. Technical bracing diagrams and construction specifications are provided for each guitar prototype, including fan bracing layouts, I-beam dimensions, and soundhole configurations, with a formal proposal for guitar #13 outlined on July 10, 1978.