This is a four channel amplifier ideally suited f use with quadraphonIC equipment such as a Sound BlaSTer Live card. There is no volume control,audio levels being directly controlled from the sound card itself.
Parts List:D1-D4: 1N4001 (4)C1,C20: 1000u CAP (2)C2,C11: 47u CAP (2)C3,C5,C7,C8,C12,C14,C16,C17,C21,C22: 0.1u CAP (10)C4,C6,C13,C15: 10u CAP (4)C9,C10,C18,C19: 2200u CAP (4)R1,R4,R9,R12: 1M RESIST (4)R2,R6,R10,R14: 100k RESIST (4)R3,R5,R11,R13: 1k RESIST (4)R7,R8,R15,R16: 2R7 RESIST (4)IC1: 7812 (1)IC2,IC3: LM1778N (2)SPK1,SPK2,SPK3,SPK4: 8R 2 Watt speakers (4)
