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:

2000W Power Amp Schematic PDF

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Goodluck

This is linear power amplifier 2000 Watt which need advance knowledge in electronics since the schematic diagram is very complex for hand made circuit. I think you have to re-design the schematic diagram using circuit diagram software designer such as diptrace, eagle, expresspcb ect. Or just order the PCB online, they will be glad to make the PCB for you.

This kind of power amplifier circuit need high power consumption, so you need to build the power supply carefully. It need dual polarity power supply (+85, 0, -85) and of course with high DC current of about 20A.

Just need to think again if you want to build this kind of power amplifier 2000 Watt.