Ovation Guitar #22 Research and Development Testing Log

This is an internal Ovation research and development document chronicling the iterative construction, modification, and acoustic testing of experimental guitar #22 between May 1975 and March 1976. The document records detailed measurements of top deflection (RL, SN, K columns), bracing changes, bridge modifications, and frequency response plots taken with a microphone 4 inches from the sound hole. Multiple versions of the guitar (labeled #22 through #22-16) are tracked with precise notes on structural changes and their acoustic outcomes.