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 every one I made this amp on a wood piece as it is shown in diagram, I used 8 pairs of 2sc5200 and 2sa1943, on 60 volt supply its a very solid amp..

  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. HI SIR CAN I BUY THE PCB WITH OUT THE COMPONENTS FROM YOU AND THE POWER SUPPLY PART LIST LIST OF COMPONENT PLEASE GIVE ME THE PRICE ASWELL AND YOUR BANKING DETAILS

  4. sir. i need negative layout pattern of driver for 2000 watts class AB power amplifier thank you.

  5. goodday everyone, the PGND output, where it is connected, its connected to 0V of +90V/0V/-90V power supply or where? pls. advice me, thanks in advance.

  6. sir it’s me sandeep unnichery how are u sir; sir one 2000watts AB amplifier circuit some diode value are not clear, sir pls send it to and the pcb of this amplifier pls sir, I want to do this amplifier on my shop pls sir ,thanks u sir.take care sir

  7. sir good evening transformer i made and sir no get the 2000 watts amplifier pcb thank you sir for the send reply take care sir\

  8. sir I Like amplifiers to make
    sir pls help me to give the pcb of 2000watts amplifier then.l start my work. u are my teacher sir.thank you sir

  9. THANKS,PLEASE CAN I KHOW WHY YOU DID NOT PUT BASE RESISTORS ON THE OUTPUT POWER TRANSISTORS?,AND ALSO WHAT SIZE OF POWER TRANSFORMER SHOULD I USE IN TERMS OF POWER OUTPUT?.CAN YOU PLEASE POST TO ME THE PCB DIAGRAM.
    THANKS,NAKUDO ROBERT.

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