1000W Stereo Audio Amplifier with Transistors 2SC5200 and 2SA1943

1000W Stereo Audio Amplifier with Transistor 2SC5200 2SA1943

This is the circuit design of 1000W stereo audio amplifier. It is a very good design to assemble, easy to build from your board to the acquisition of components, the output transistors are the COMPLEMENTAR 2SC5200 and 2SA1943 relatively cheap and with very good result. In the power supply module we have 6 capacitors 4700uF/80v or more and one 50A bridge rectifier diode, this design can be in versions mono (500 Watts) or stereo (1000 Watts), if it is to mount it in the stereo version it is good to use a transformer of at least 8 Amperes and the voltage in both versions has to be 50v + 50v with central bypass, this transformer can be toroidal or ordinary.

Stereo Audio Amplifier Part Lists

Transistors

10 Transistors 2SC5200
10 Transistors 2SA1943
4 Transistors C2073
4 Transistors A940

Resistors

20 Resistors of 2.2 ohms 1/2W
20 Resistors of 0.33 ohms 5W
4 Resistors of 10 ohms 1W
4 Resistors of 100 ohms 1W
4 Resistors of 5.6K 1W
10 Resistors of 100 ohms 1/4W
4 Resistors of 330 ohms 1/4W
4 Resistors of 1K 1/4W
4 Resistors of 18K 1/4W
2 Resistors of 33K 1/4W
2 Resistors of 56K 1/4W

Capacitors

6 Capacitors of 4700uF/80V or more
6 Capacitors of 100uF/50V
2 Capacitors of 1uF/50V
2 Capacitors of 100pF ceramic
2 Capacitors of 15pF ceramic
4 Capacitors of 330pF ceramic
4 Capacitors of 680pF ceramic
4 Capacitors of 220 pF to ceramic
2 Capacitors of 0.1uF (104) / 250V polyester
5 Capacitors of 0.1uF (104) / 100V polyester

Miscellaneous

2 Integrated Circuits TL071 or UA741
4 15-volt to 1W zener diodes
4 Diodes 1N4007
1 Diode bridge of 35 amps or more. Best if it is 50 Amp
2 Small 2-pin GP connectors
2 large 3-pin Molex connectors
2 large 6-pin Molex connectors
1 50vx50v transformer, or up to 55x55V AC with current 15 amps minimum (stereo version)
2 Sockets for 8-pin integrated
4 sinks of 22 x 10 x 2.5 centimeters
24 mica insulation

1000W Stereo Audio Amplifier PCB Design

1000W Audio Amplifier PCB Layout
Bottom PCB Layout
1000W Audio Amplifier Component Placement
Component Placement

Power Supply for 1000W Stereo Audio Amplifier

Power Supply PCB Layout for 1000W Audio Amplifier

Power Supply Top Design for 1000W Audio Amplifier

1000W Stereo Audio Amplifier Stereo Channel Connection

Stereo 1000W Audio Amplifier Connection

71 comments

    1. Yes you can but you should observe the pin configuration each of them. TL071 is single drive, jrc 4558 is dual driver.

  1. Can I replace 2SC5200 and 2SA1943 with
    2SC3858 and 2SA1494 in order to get 1000w per channel. If yes, what would I have to change in this circuit. And what’s the input sensitivity of this circuit, at what db level would I get maximum output. Thanks

  2. This amplifier circuit is working fine.
    my test results
    1, voltage-60+60 dc
    2, input voltage – 1.2 v rms sine wave
    3, amplifier giving output- 294 watts rms@8 ohms load
    4 , dc current 2.65 ampere.

    Friends this is not a 1000 watts amplifier.this amp give only approximate 350 watts rms @ 8 ohms load.

    change R3,R4 2W,D1,D2-1W

    1. Note this is 1000W ‘Stereo’ Audio Amplifier @ 4 ohms load, stereo means that there 2 identical power amplifier board circuit ( 500W + 500 W). Sir can you make a test at 4 0hms load? Thank you

    1. Yes, you can use 40-0-40 but you will not be able to get maximum volume that you want, or you may connect the capacitor in series to get higher DC Voltage.

  3. Sir Maine 2chanal banaye h but power transistor 5200 and1943 me heating problem as Rahi h ,, Power supply 70_0_70 dc use Kiya h

  4. Hi good day, I would like to ask the amplifier 1000W Stereo Audio Amplifier with Transistors 2SC5200 and 2SA1943″ it is working. Can you send me pcb layout component placement and schematic diagram?

  5. I made this circuit but i have a problem with that. It is not working. I supplied 25-0-25 volts and the speeker poped out. Speeker out shows 25 volts output and it stops when i remove tl071. Is there anyone who can help me please ?

  6. Can somebody send me the gerber file PCB layout…. or if some body is having additional PCB if ordered then please let me know my Mobile number is 9953711932 and email ID tarun61@yahoo.com

  7. Hello sir I need 1000W Stereo Audio Amplifier with Transistors 2SC5200 and 2SA1943

    pcb layout component placement and schematic diagram.

  8. Sorry but in this SCH Q1and Q2 amps the PSU noise! Especially by high power. I bilt the same principe amp end analised this effect.

  9. Sorry but in this SCH Q1and Q2 amps the PSU noise. Especially by high power. I bilt the same principe amp end analised this effect.

  10. The circuit works perfectly fine I used 42.0.42 supply and 2 pairs of the output transistor. Driver section tlo 71 and tip 122 & 127 Darlington transistors.

  11. a very good amplifier ckt.working good.try to add more o/p pairs for final stage.i modify this ckt for adding more power (95vdc/20A and 24 o/p transistors) for 1ch.working good.but it burned my one 1000W 8ohm woofer while dj event in public.(i think <1000W produce)however this is good amp.thanks.

    1. I know that this is an old query but 28 turns of wire around a 1 cm core of wood, aluminium, cord etc, but NOT iron or similar metal, to give a coil around 5.16cm long, will give you and inductor of around 6 micro-henrys. I hope this helps

  12. According to the planning outline of the Eleventh Five-year plan for the scientific and technological development of IT industry, as well as the long-term planning outline of 2020, PCB will enter the key stage in China’s electronic IT industry in the next 5 to 15 years, especially for multi-layer, flexible, rigid-flexible and environmental-friendly PCB technology.

  13. Besides, in laying out PCB components of LED switching power supply, it is suggested that engineers should arrange the position of every functional circuit based on the procedure of the circuits. This kind of layout will will the signal flow more effectively and rapidly and make the signals maintain the same direction. In laying out PCB board, the first principle is to ensure routing rate; connection between the flying lines should also be paid special attention; components connected with wires should be put together. The size of loop should be reduced to the minimum extend to stop radiated disturbance of the switching power.http://www.pcbindex.com

  14. Hi I will like to know if I can use all NPN transistors for the output stage and if yes how will the utput transistor base line feed from. Thanks

    1. Mene iske 2 board banay 45/0/45ka transformer use kiya saund master 400watt ke 2 speakar 60watt ka hf use kiya ek board me bhut achchha bolta h ye board koi kami nahi lagi ekdam kam buget me mast laga

  15. i made this audio amp.works very fine.nice pure output.i m looking to forward to make this amp in bridge mode.thanks

  16. Hi
    I hope someone gets this and can help.
    The transformer you say 8 amps at the top for stereo, but in the parts list you say 16 amp
    Is this 8amp per winding, as most transformers are sold like this. Thanks

  17. Mene iske 2 board banay 45/0/45ka transformer use kiya saund master 400watt ke 2 speakar 60watt ka hf use kiya ek board me bhut achchha bolta h ye board koi kami nahi lagi ekdam kam buget me mast laga thank you, from kolkata india,

  18. Hi,
    I was trying out your amp,I used BD 140/139 for Q1 and Q2,and tip 41/42 for Q4 and Q3,tlo72,-/+17.2vplus minus,(12v in series with 5.6v zener).PSU is -45 and +45 Everything else is the same.
    At low volume below 20watts of power,sound is clean but as u increase there is very unpleasant distortion as if speakers are cut or damaged.
    Speakers are fine,and play well on another amp.
    Help me out here,what could cause such noise
    Your fan.

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