2000W Class AB Power Amplifier

2000W Class AB Power Amplifier Circuit Diagram

This is the circuit diagram of 2000W class AB power amplifier uses 7 pairs MJ15003 and MJ15004 transistors for the final amplification block. The circuit operated with 90V DC symmetrical (dual polarity) power supply circuit. The transistors must be mounted on heatsink to prevent the overheating, maintain the transistors work in maximum performance.

2000W Class AB Power Amplifier Specifications:

  • Max. Output Peak Power: 2000 Watt Peak @ 2?Ohms Loudspeaker
  • Max. RMS Output RMS Power: 1000 Watt RMS @ 2?Ohms Loudspeaker
  • Max. Bridged RMS Output Power: 2000 Watt RMS @ 4?Ohms Loudspeaker
  • RMS Output Magnitude: 44.7v RMS
  • Peak Output Magnitude: 65v Peak
  • Freq. Response: 20Hz ~ 20KHz
  • Max. Output Gain: 40dB
  • Input: 100mV Peak
  • DC Power Supply: 90v DC (Dual Supply)

Download the schematic diagram in PDF document for higher image resolution:

Goodluck 🙂

35 thoughts on “2000W Class AB Power Amplifier

  1. hello sir can i ask complete parts list pcb foil pattern and component diagram for this 2000 watts power amplifier thankyou

  2. please send the clear resolution circuit diagram of 2000w class AB amplifier and its power supply diagram to my email. thank you for the information

  3. Dear sir I am new bee to power amplifiers , can u please provide me PCB print design and how much power supply does it requires , I want to make amp for my village people ….
    Kindly help me in this issue

  4. GOOD DAY!!!

  5. I Just want to mention that the complementary pair MJ15003/MJ15004 have a Vceo of 140 V. However, according to the schematic, the power rail is +/- 90 V, and the output peak voltage is 65 V. So, for a short period of time, the Vce will be equal to the addition of both, which means 155 V. If you are bad-lucky and you have some weak transistors, you can break down the emitter-collector junction…and destroy them.

    Beside that, this transistor is very tough, I build myself, many years ago, a 300 Watts RMS on 4 Ohms load power amplifier that use 3 pairs at the output stage.

  6. how to get the foil pattern pcb 2000 watts class AB power amplifier please advise thank you!

  7. how to get the foil pattern pcb 2000 watts class AB power amplifier please advise thank you!

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