1977 Ovation US Price List August 1977
Year: 1977
Factory wiring schematic for the Ovation Magnum I bass guitar showing a passive circuit with dual pickups (bridge 701400-A-15 and neck 701300-A-15), individual volume (500K linear taper) and tone (250K special taper) controls per pickup, a selector switch, stereo and mono output jacks (Switchcraft), and a resistor network of 100K resistors with capacitor filtering.