Мощный ламповый одно такт! Стерео усилитель звука на Г811.

Introduction

In this tutorial, we will explore how to build a powerful single-ended tube amplifier using the G811 tube. This guide is based on a video overview that not only explains the amplifier's circuit design but also showcases its sound performance. Whether you're a seasoned audio enthusiast or a beginner, this step-by-step guide will help you understand the construction and functionality of this audio amplifier.

Step 1: Gather Necessary Materials

Before you start building your amplifier, ensure you have all the required materials and tools:

• Components:

  • G811 tubes (2 pieces)
  • Resistors and capacitors (specific values mentioned in the schematic)
  • Transformers (output and power)
  • Diodes for rectification
  • Chassis for housing the amplifier

• Tools:

  • Soldering iron and solder
  • Wire strippers and cutters
  • Multimeter for testing
  • Screwdriver set

Practical Advice

• Double-check the specifications of each component to ensure compatibility with the G811 tube.
• Organize your workspace to keep components easily accessible.

Step 2: Review the Circuit Diagram

Understanding the circuit diagram is crucial for successful assembly.

• Key Components to Note:

  • Input Stage: Where audio signals enter the amplifier.
  • Gain Stage: Amplifies the signal using the G811 tubes.
  • Output Stage: Transfers the amplified signal to speakers.

• Schematic Review:

  • Familiarize yourself with the connections and values of resistors and capacitors.
  • Ensure you understand how the G811 tubes are integrated into the circuit.

Practical Advice

• Print or have a digital copy of the schematic handy during assembly for reference.

Step 3: Assemble the Chassis

Start building the physical structure of your amplifier.

• Steps to Follow:
  • Secure the transformers to the chassis.
  • Mount the G811 tubes in their designated sockets.
  • Ensure ample space for heat dissipation around the tubes.

Common Pitfalls

• Avoid overcrowding the chassis, which can lead to overheating.
• Make sure all components are firmly secured to prevent vibration issues.

Step 4: Wiring the Components

Carefully wire the components as per the schematic.

• Wiring Instructions:
  • Connect the resistors and capacitors according to their designated places.
  • Use high-quality wires to ensure good conductivity.
  • Check polarity on capacitors and diodes to avoid damage.

Practical Tips

• Use color-coded wires to make troubleshooting easier.
• Confirm each connection as you go to avoid mistakes.

Step 5: Testing the Amplifier

After assembly, it's time to test your amplifier.

• Testing Steps:
  • Use a multimeter to check for continuity and proper voltage levels.
  • Power the amplifier on without connecting speakers to ensure no immediate faults.
  • Gradually connect speakers and play audio to evaluate sound quality.

Common Pitfalls

• If you experience issues, recheck all connections and component orientations.
• Avoid turning up the volume too high initially, as this can damage speakers.

Conclusion

Building a tube amplifier using the G811 is a rewarding project that enhances your audio experience. By following these steps, you can create a high-quality amplifier that delivers rich sound. Remember to take your time during assembly, refer to the schematic, and test thoroughly. Enjoy your new audio creation, and consider experimenting with different components to further enhance your amplifier's performance!