Classical Guitar Study - July 1, 1978 Internal Research Notes on Bowl and Bracing Configurations

These are handwritten internal research and development notes dated July 1, 1978, documenting acoustic evaluations and bracing configurations for multiple experimental Ovation guitar prototypes numbered #5 through #12. The notes compare sound qualities (body, brights, bass, ring, volume) across different bowl types (Zercho, Ovation deep bowl) and bracing patterns, referencing production models like the Adamas and Applause. The author systematically evaluates each prototype against a benchmark instrument (#8) and a reference called 'Taka,' documenting construction specifications including beam dimensions, fan placements, and structural modifications.