Ovation Adamas 1187-2 Guitar #48 Internal Research/Testing Document

This is an internal Ovation research and development document from 1976 detailing the construction specifications and acoustic testing of an Adamas model 1187-2 guitar (S/N 0048). The first page records top thickness measurements, brace weights, deflection readings, and installation notes including sound testing at Moosup. The second page contains a frequency response graph dated 11-29-76, tested by technician D. Johnson, showing the acoustic output of guitar number 0048-95 across the full audible spectrum with annotated resonance peaks and a note that overall amplitude may be too low by 2.5 dB.