The 5 W audio amplifier circuit consists of loudness control, driver amplifier Q1, and the bass and treble controls of approximately ± 10 dB boost / cut. Either the ac supply shown in here can be used, or a 12 Vdc supply can be connected to points A&B (positive) and C (negative). Two of these circuits, using ganged potentiometers at R2, R7, and R11 can be used for stereo applications. T1 is a 12Volt 1 ampere plug-in transformer. Notice that IC1 must be heatsinked. Power output is about 5 W. A 4″ x 2″ x 0.050″ aluminum heatsink should be adequate.
5 Watt audio amplifier Parts list : R1, R6 : 10K R2, R7, R11 : 100K R3 : 2.2M R4, R10 : 4.7K R5, R14 : 470 ohm R8, R12, R13 : 1K R9 : 0.022 ohm R15, R16 : : 2.2 ohm C1 : 1uF C2 : 0.047uF C3, C7, C8, C19 : 0.1uF C4 : 100pF C5, C14, C15 : 100uF/10V C6 : 1uF/16V C9 : 0.022uF C10 : 0.22uF C11 : 100uF/16V C12 : 0.001uF C13 : 1uF/16V C16 : 0.01uF C17, C18 : 1uF C20, C21 :0.001uF C22 : 2200uF/25V C23 : 2200uF/16V D1 : 1N4735 D2, D3 : 1N5480 D4 : 1N5400 Q1 : 2N5000 IC1 : LA4460 Sanyo T1 : 12 V / 1 A
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