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 šŸ™‚


40 thoughts on “2000W Class AB Power Amplifier

  1. Gerson Watts Eletronica

    essas informaƧes sĆ£o minha colaboraƧao para quem for montar o amplificador acima!
    me ajudem tambem se inscrevam no meu canal:
    https://www.youtube.com/channel/UCKZ2Ukr0x0k5deHe2tH4eTQ
    +-90VDC
    Corrente do transformador para um canal:————15.81 A
    Corrente do transformador para dois canais:———31.62 A
    Corrente minima do transformador para um canal:—–11.11 A
    Corrente minima do transformador para dois canais:–22.22 A

  2. samuel powell

    how to get the foil pattern pcb 2000 watts class AB power amplifier

  3. Jiorlen

    Hi sir im interested in that amplifier could you send me a full partlist of components , pcb lay.out and schematic sir ? Ty. Send to email

  4. cesar alla

    Gd,day I am Cesar from Philippines,can you send me pcb board and components list? I want to build this amp.
    Thank you

  5. sony

    can i have the pcb layout of 2000w power amp?,and all compnents.

  6. S d barma

    studiomaster 3.0amp repair tasting point guide in hindi thanks

  7. Omprakashnuwalnuwal.@gmail.com

    Sir, iam2000waatt class ab pcb and power splay pcb my email

  8. Alex Christopher

    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

  9. ROY SINGH

    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

  10. ALLAN D. ARTOZ

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

  11. Tigaskuku

    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.

  12. sandeep unnichery

    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

  13. allan

    how to get the pattern of MATRIX 1.4-MP-QEF VARIANT 2000 WATTS PCB BOARD Pls..given to me

  14. sandeep unnicheri

    no need resistor on the transistor base true sir

  15. sandeep unnicheri

    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\

  16. sandeep unnichery

    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

  17. NAKUDO ROBERT.

    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.

  18. sandeep unnicheri

    sir pls sent the pcb of 2000 watts amplifier circuits on my email pls

  19. fred

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

  20. allan

    how to get full pattern pcb 2000 watts class AB power amplifiers please give me thank you.

  21. Anebi ThankGod

    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

  22. Anilchowdary

    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

  23. Richard R. Baliguat

    GOOD DAY!!!
    SIR, HOW TO GET THE FOIL PATTERN OF PCB 2000 WATTS CLASS AB POWER AMPLIFIER PLEASE ADVICE THANK YOU…..

  24. Marc Vendette

    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.

  25. jerin

    Sir,
    Please give me the pcb component layout of 2000W class AB amplifier.

    Regards,
    Jerin.

  26. Zafar Ahmed

    Hi Sir request u to kindly send the PCB file pattern of 2000 watts power amp class AB

  27. DEBABRATA BISWAS

    Dear friend
    Can you please send me the power supply diagram and PCB if you have made it.

  28. Jayson Sebastian

    sir, can u send me a copy of foil pattern in my FB account

  29. Jayson Sebastian

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

  30. Kolawole Adetugbo

    WONDERFUL CTT , THE PCB IS QUITE SIMPLE

  31. Letin Siyvica

    sir,can u post a foil pattern pcb of 2000watts ab amp. thanks

  32. Mnoelcolombo Mnoelcolombo

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

  33. Arjay Bautista

    very nice but in my age its hard.im newly hobyist

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