This design typically follows a push-pull architecture. It uses two 2N3055 transistors as the final power stage to drive an 8-ohm speaker. Key Components Power Transistors: 2x 2N3055 (NPN) Driver Transistors: BD139 (NPN) and BD140 (PNP) Voltage: Dual rail supply ( ±35Vplus or minus 35 cap V Power Output: ~50 Watts into 8 Ohms Step-by-Step Connection Logic Input Stage The audio signal enters through a electrolytic coupling capacitor.
They boost the signal enough to "drive" the heavy-duty 2N3055s. 2n3055 Audio Amp Schematic
potentiometer is usually placed here to adjust (to prevent crossover distortion). Output Stage (The 2N3055s) This design typically follows a push-pull architecture
This stabilizes the gain and reduces total harmonic distortion (THD). Safety & Build Tips 2n3055 Audio Amp Schematic