Project Overview

This project presents a PCB layout for an 8-transistor audio power amplifier built around the complementary 2SC5200 and 2SA1943 output transistors. The board brings together the amplifier and driver sections, emitter resistors, power-supply connections, and speaker output.

Video Walkthrough

Watch the assembly and test video below. Check that its circuit and component values match the documentation for this PCB before following it.

PCB Files

Download the 8-transistor amplifier PCB layout on GitHub.

Before Power-Up

• Verify each transistor pinout against the datasheet for the exact part being used.
• Check capacitor polarity, component orientation, supply connections, solder joints, and the speaker output wiring.
• Use the circuit documentation for the required supply voltage and bias procedure. Start testing with current limiting and monitor the output stage.
• Fit suitable heatsinks to the output transistors and check their temperature during operation.

This layout is intended for experienced DIY electronics work. The PCB image does not replace the schematic, parts list, or a verified test procedure.