Ovation Guitar #65 Internal Research/QC Document - Model 1187-8 S/N 0065

This is an internal Ovation guitar research or quality control document dated 1/5/77, covering Guitar #65, specifically Model #1187-8 with Serial Number 0065 featuring new core wood construction. The first page details physical specifications including top construction, bridge measurements, brace weights, and deflection/stiffness measurements (RL, SN, K columns). The second page, dated 4/1/77, contains a frequency response graph (acoustic analysis) for Guitar #65, plotting decibel output across the audible frequency spectrum from approximately 30 Hz to 9000 Hz, with notable resonance peaks and nulls annotated.