Ovation Guitar #25 Internal R&D Description and Sound Evaluation Report

This is an internal Ovation research and development document describing the construction details, measurements, and sound evaluation of experimental guitar prototype #25 and its variants (#25-1, #25-2). The document covers technical specifications including top materials (striated graphite SG-2), bracing weights, hole patterns, and deflection measurements recorded between December 1975 and January 1976. Sound evaluation notes indicate the guitar lacked bass and mid-range body, with modifications attempted including brace trimming, saddle adjustments, and addition of a long bridge brace.