Ovation Adamas 1187-8 Guitar #54 Internal R&D Testing Documentation (1976)

This is an internal Ovation research and development document from 1976 detailing the construction specifications and acoustic testing of an Adamas model 1187-8 guitar (S/N 0054). The first page records physical measurements including top angle, weight, bridge dimensions, and brace positions logged across multiple dates in August and November 1976. The second page contains a frequency response graph (dB vs Hz) produced by technician D. Johnson on 11-30-76, showing the acoustic resonance profile of the completed instrument with a handwritten note indicating the overall amplitude may be too low by 7.5 dB.