This is a good amplifier circuit taken from electronic-diy.com. Built based LM3886, the amplifier capable to deliver up to 68W audio output.
Parts List:
| R1 = 10K Ohms R2 = 10 Ohms 2W see text R3 = 10 Ohms R4 = 47K Ohms R5 = 220K Ohms R6 = 10K Ohms R7 = 100K Ohms L1 0,7uH IC1 LM3886 | C1 = 100NF C2 = 100NF C3 = 100NF C4 = 100UF C5 = 100UF C6 = 4,7UF C7 = 100UF C8 = 1UF |
The amplifier should be supplied by +34 and –34 volts. R2 and L1 is a resistor of 10 ohms / 2 watt coiled with 10 to 12 you exhale of enameled thread AWG 20.
68W Power Amplifier circuit diagram based LM3886