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Amplifier circuit is very suitable for use in subwoofer amplifier system based on IC SI1030G. Amplfier has 30W output with 8 ohm impedance. Supply voltage required minimum of 12 volts and a maximum of up to 22 volts DC. Component List : R1 = 100K R2 = 1R C1 = 2.2uF C2 = 100uF C3 = 47uF C4 = 100nF C5 = 10uF C6 = 47uF C7 = 100uF IC = SI1020GL , SI1030G

TIP141 si a npn silicon power darling tons designed for complementary use with TIP145, TIP146 and TP147. Can stand up to 125 W at 25°C Case Temperature, 10 A Continuous Collector Current and has a minimum hFE of 1000 at 4 V, 5 A. This home audio amplifier can output 30W with a +- 32V symmetric power supply. If you want a stereo power amplifier please check out the other schematics. R1=1Kohm R16-17=270ohm D1=9.1V 0.4W zener R2=47Kohm R18=22ohm 1W D2-3=1N4148 R3=1.5Kohm R19=NC Q1-2= BC550C R4-5=10Kohm R20-21=0.39ohm 4W Q3= MPSA56 R6=5.6Kohm TR1=250ohm trimmer Q4= BC547B R7=10ohm C1=470nF 100V MKT Q5= BC212 R8=47Kohm C2=1nF 100V MKT Q6= BC183 R9=560ohm C3=68pF ceramic Q7-8= MPSAO6 R10-11=8.2Kohm C4-8=22nF 100V MKT Q9= TIP141 R12-15=120ohm C5-6-7=100nF 100V MKT Q10= TIP146 R13=680ohm C9=47uF 25V F1-2=1.6AT FUSE R14=330ohm C10-11=220uF 63V All the resistors is 1/4W 1% except quote differently 30W power amplifier circuit diagram 30 Watt audio...