Special Effects Generator (SEG) II. Operator Manual from Concord Incorporated, contents follow: Disassembly Instructions, Explanations on Circuits, Adjustments, Important Notes, Component View of P-S70B, Conductor View of P-S70B, Component View of P-S71B and Component View of P-S72B, Conductor View of P-S71B and Conductor View of P-S72B, Component View of P-S73B and Conductor View of P-S73B (10 pages). SEG II: Boards 1 and 2 Connector lists by Jones.