# High Power Class-D Amplifier D4K5

This High Power Amplifier circuit is a class D power amplifier, which has high enough power to generate 300W of power at 8 Ohm - and also more power up to 500W at 4 Ohm. This Power Amplifier can generate great power if given enough power supply. For example, you can use a 30A transformer with 100V symmetric voltage.

Simple Class-D LM311 IR2110 Video Assembling and Test: https://www.youtube.com/watch?v=wW0KCoUaXbc&t

This more high power than this D4k5 see here: Class D Fullbridge D2K5

Here is the circuit scheme of High Power Class-D Amplifier D4K5:

View larger schematic image here: Power Amplifier Class-D D4K5

Component List
Resistor
R1, R3, R4, R9, R13, R18, R19, R20= 1K
R2, R16, R39= 100K
R5, R6= 10R
R7, R8=6K8/2W
R10, R21, R26, R27=4K7
R11, R17=6K8
R12=100R
R14, R15=4R7
R22, R23, R24, R25, R31, R33=47R
R28, R29, R30=0,1R/2W
R36, R38=22R/2W
R40=1K5/5W
R41=10R/2W
RV1=10K Trimpot

Capacitor
C1=10uF/16V
C2=10N
C3, C4=1N
C5=470uF/16V
C6=220uF/16V
C7, C9, C11, C12, C13, C15, C16, C18, C19=100N MKP
C8=470uF/16V
C10, C14, C17=100uF/16V
C20=10uF/50V
C21, C22, C23=220N/475V
C24, C25, C26=470uF/180V
C27, C31, C33=100N/275V
C28, C29, C30=470uF/180V
C32=470N/250V

Diode
D1, D2, D5, D10, D11= 1N4148
D3, D4= ZD5V6
D6, D18, D19= MUR460
D7= LED (RED) OCP
D8= ZD5V6
D9= LED (BLUE)
D12,D13,D14,D15,D16,D17= 1N5819

Transistor
Q1= 2N5401
Q4, Q6= BD139
Q5, Q7= BD140
Q8, Q9, Q10, Q11, Q12, Q13= IRFP260

IC
U1= TL071
Q2= CD4049
Q3= IR2110
U2= NE555
U3= LM311

The Power Amplifier is using view components and this power amplifier includes OCP, DCP. And using 6x N-Channel Power Mosfet. You can use IRFP260, IRFP4227, IRFP4242, and others. If you want to make this power amplifier, see the following PCB Layout Design
View larger PCB Layout Design: PCB Class-D D4K5

Video Tested Class-D D4K5 Amplifier: https://www.youtube.com/watch?v=IV0nCL2RTz4

## 186 comments for "High Power Class-D Amplifier D4K5"

1. Hi ia am pranatosh from india. This circuit tested? 100% real?

1. Heĺlo Pranatosh.
Yes it is real and this tested from indonesian DIYer.1

3. The LF Coil using 22uH

4. This comment has been removed by the author.

2. fake pcb size !

1. What do you think? the PCB size is true.. please see again.

2. I printed the PCB on a A4 paper and it's not at the right size, instead of the announced size 200X80mm i measured it and it is 223X90mm

3. but you can use it bro

3. Hello sir lf coil core is iron core?

4. Please tell me details of lf coil. I will try to make this in this month.

1. Hello you can using iron core about 10uH

5. This comment has been removed by the author.

6. I am collect ir2110 from dna website. I will try to make this......... Can you help me?

1. what do you want to ask me?

7. Semitic and pcb design not same. So can u tel me why

8. Ir2110 ic's some pin are open in semitic. But pcb desin all pin are connected.

9. This circuit respond full range or sub bass thank sir.

1. this is can for sub or mid high you can see video result

10. Hello sir please tell me what is the correct? Pcb or semitic

11. Como descargar el pcb layout del amplificador por favor ayúdame

12. hello I'm Revocatus from Tanzania I need the finished board D4K5, what is the price par piece? [email protected]

13. Which is the power supply used in the test video? It looks like the 10A 20-50V DC CT... is it indeed?

1. Yes im raising up to 75V DC

14. This comment has been removed by the author.

1. Yea i already see you on youtube, the coils im using 22uH with 2mm copper diameter with turn about 30x, core size diameter 35mm

2. +electronic tech : finally which one did you use for this amp semitic or pcb design as you mentioned differences between the two

3. there are is true pcb

15. I am tested-4 pcs 12" 200watt and 2pcs 15" 300 watt speaker.

1. This comment has been removed by the author.

16. I am tested irfp250n 1pair MOSFET.

17. Hello! I downloaded the schematic and pcb pdfs but they are not in good quality. Can you please re-upload them in high quality? Or send me an e-mail? Hope you can help me, thanks a lot

18. can you please provide the GERBER files for this amplifier? thank you

19. I will upload video 1 by 1 see on youtube. Name Pranatosh Tech

1. hi you can help me to made this amplifier
you can send some photos and details of the amplifier
how much cost to make this amplifier
or any of details of this amp

My mailbid is [email protected]

22. Amigo vc pode mim enviar o arquivo no proteus ares no [email protected]

23. what about power supply, I need that diagram too

24. Hello! I downloaded the schematic and pcb pdfs but they are not in good quality. Can you please re-upload them in high quality? Or send me an e-mail? Hope you can help me, thanks a lot.

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1. no no you wrong,, this class-d you must be carefull to assemble it, cause it can make damage your mosfet. different with class ab. you must use a quality component dont place poor quality.

27. Sorry bro pcb is 100% real. I already use it for dj program.

1. Do you have tested video?

2. This comment has been removed by the author.

28. This comment has been removed by the author.

1. sorry for it, but its work so i will upload my own pcb diy.

29. If the SMP is good I upload the videos for u on YouTube pls help

30. If the SMP is good I upload the videos for u on YouTube pls help

31. This comment has been removed by the author.

32. I think you all should not wast your funds the circuit does not work the guy is a very bad. I tried to do this circuit because of the efficiency of class d I think I will stick to my class Ab which has minimum parts and very clear sound.

1. Hahaha please dont judge, this class d amp is works. The power is more high than your class ab.

33. The circuit is a scam it doesn't work. All what they say is class d is efficient but to me most class AB on the Internet is far better than this circuit. Like renowned Nelson pass all his article and amplifier are best and sound great.

1. why you spamming comment lik this. If you cant build class d amp, dont try! its more difficult than your class AB

34. I have repair a lot of class D amplifier in my country and believe you me my Nelson pass class AB any mosfet by didik with jfets input sound great. [email protected] is mail box. 😂😂😂😂😂😂

1. its more efficiency this class d

2. May i ask you what efficiency did you succeed with this Class D?

35. you better try it. it's only 25 dollars for the component and share the problems you face here. it will be more helpful for others

1. next i will make a gerber files for this pcb

36. amigo puedes pasarme el archivo en proteus?

37. amigo puedes enviarme el archivo en proteus [email protected]

38. Q2= CD4049

1. you can make it your own design

39. Please tell about 12 volt supply. 12 volt negative line is directly connected with line of -55 volt

1. yes its connected with - rails.

40. Is it -12volt or 0 volt?.

41. MUR860 is not available in my place. Which diode can I use instead of MUR860? In the PCB there is one MUR860 and one MUR460, but in the assembling video you used two MUR860.

42. This amp really good. I already make it.
If you make this amp , at first make all ic tester . you can see all ic tester on you tube. Channel name Pranatosh Tech.

43. I made the amplifier. But when I connected 12v supply to the board, the Ic IR2110 getting over heated and damaged. BD139 and Mosfet also damaged. What will be the problem? Pranathosh how did you give the 12v supply? Is it O-12v or -12v and +12V? Did you use MUR860 diode?

1. what the diode u using? is there oyu using 12V ?
use 0V 12V
0v connected with V- rails power amplifer
and +12v connected to bias voltage

44. Pranatosh, I watched your You Tube Channel. Now I am going to make all IC tester.

45. I used MUR860(D6),MUR460(D10) Diodes as shown in the PCB. I used 0v 12v for bias voltage as you told. Is there any adjestment for Trim pot (RV1)?

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52. Where buy this PCB? [email protected]

53. Bro ur 4k5 amplifier is working 100,/I make it ,and test it supper ,bro I want to talk to u pls

54. Pls bro come online ,do u have any health problems, u r right bro this amplifier power is super bro ,u r great ,bro this is the proof ,bro I want to talk to u pls come online bro,thanks

55. see the class d test with lf coil details (out put coil) please see the full video.click on link https://youtu.be/pwmeQ7BvVb4

pranatosh tech channel

1. Can you send me your email id

56. schematics and pcb layout dont match??

1. yes i also noticed that, lets hope the parts are not fake values

57. ir2110 how is this gonna work when pin 9(+ supply) and pin 13(-supply) of ir2110 is not connected hahahha

and with the 5.1 v supply of cd4049 has been connected to the one of the inverting input how "rubbish is the schematics"

1. maybe it less wrong, but you can build one of PCB and it works. thanks

2. plz sir i need this pcb totel things on order how can posibel plz tel us tel me my id or number 0096 598848974 plz plz plz

58. Thank you sir I'd already finished testing your circuit and I'Ve got good result for it.

59. Master I am going to try the 4k5 one more time for u can u help me bro seriously

1. Amplifier model is 4k5 its cannot deliver 4000watts on any power supply, its the design says friends, do it well 🙏😊

60. Hi this is full bridge Class D?

1. This halfbridge

61. kindly share eagle file or gerber file please

62. Hey Sir Can i Get Your Email id

63. Hey Sir i am ravi can i Get your email id

64. the author does not respond

65. Hi,I need a gerber file of 4500W High Power Class-D Amplifier D4K5, so what is the price.

66. Hi,this is Revocatus ([email protected]) I need a gerber file of 4500W High Power Class-D Amplifier D4K5, so what is the price.

67. sir Pls Upload this amplifier Proper power supply PCB and all rating on Regular Use of the amplifier pls help me. I made but power supply pls..

68. pls any person help with pcb and transformer rating which use to supply power to use this amplifier

69. Hello ramdhan bro this 4k5 is suuuuper working, thanks bro my best friend Pranathosh bro help ,nice job bro ,

1. hi mosfet you can help me to made this amplifier
you can send some photos and details of the amplifier
how much cost to make this amplifier

70. hi mosfet you can help me to made this amplifier
you can send some photos and details of the amplifier
how much cost to make this amplifier

71. Hello bro ,I will help u bro,my what's up number is+918921058775,we will make this,don't worry bro,it is low cost amplifier but very very good working, me guarantee, my brother ramdhan is a very very good person ,brother I miss u lot pls call me bro ,friends I will help to all of my friends, thank God

1. Good job bro, im so sorry about to contact me again. Thanks

72. Please î need Proteus file for this amp design I need it for school project thanks

73. Please this is my whatsapp number for any good info +2347068964844

74. Maybe gerber files i will update

1. yes pls upload gerber or you can send pls on [email protected]

75. saludos bro he vistos videos pero en todos veo que tienen defectos y no aclaras las dudas este ampli la pcb no es muy buena y ni como hacerlo te dicen que son diferentes pcb y no veo claro cual ees el bueno gracias ora que si puedes mandarlo por correo es [email protected]

76. Bro I had no your number what's up my number is +918921058775 bro I will upload soon the 4k5 videos on my YouTube channel ,to all ,bro I am sorry I put many comments to this page ,sorry sorry bro,u r great bro any one wants to see this amplifier videos or any complaint me also help to all ,because my bro is busy ,he had many jobs ,thanks bro

1. Youre wellcome bro, and i already make the gerber file for this amp.

77. tôi cân sơ đồ chi tiec mạch class d 4k5

78. Buenas, un placer para mi saludar a una gran persona como lo es el profesor Wahyu Eko, permiso y me presento soy Leandro suarez, de Colombia y vivo en Barranquilla la bella, quiero hacerle una pregunta ¿ se pueden instalar dos tarjetas electrónicas clase D modo estéreo?, y la verdad quiero armar ese proyecto esta interesante, gracias.

79. Hasilnya manthap mas bro..ok terimakasih,angkat 21" x 4,,bass menggetarkan dada

80. Bro tolong Anda dapat saya PCB amplifier ini, dengan topeng pemasangan saya berterima kasih.
Saya dari Kolombia

81. is this inductor good
https://www.digikey.ca/product-detail/en/bourns-inc/2300HT-220-V-RC/M8935-ND/775474

82. i want this project so i Want pcv bord so how can i get them sir
tell me my email id sir plz

84. Sir what is the alternate of TL071 ? I am getting it in single.

85. Can I use a ferrite ring T130-2? It's a little smaller .Will be overheating? Here in Serbia can not find ring t157-2 Otherwise amplifier works! Thank you, sir!

1. you can use t-130-2 x2

87. I have purchased the D4K5 pcb.
The main power is + -90 volts.
12 volt power supply is supplied as a separate adapter.
Induct Core was purchased on the Internet.
The coil is 2.5mm thick, wound on an inductor core and measured at 22uH, which generates a lot of heat.
The sound was fine and the bass was solid.
I'm using it in a nightclub now.

88. The main power is + - 90 volts.

89. To purchase the product, please go to the following site.
It is described in detail so that you can purchase the product.
https://www.elcircuit.com/2018/09/gerber-file-power-amplifier-class-d-d4k5.html

90. Induct Core is available on the Internet.
4 \$ per piece.
"Magnetic ring core magnetic ring gray red magnetic interfering magnetic ferrite bead 40 * 24 * 14"

91. Hi, I want the pcb file that is in the fourth movie and JLCPCB has made it. Someone can send it to me.
[email protected]

92. I am compleate this amp. Iam already test this 16 a 50-0-50 transformer. Its ok nice quality. I am updlode testing video on youtube. Channel name - pranatosh tech. And upload also all ic tester (in555,lm311,tl071,cd4049,ir2110)

93. I have tested the circuit on the building board it's 100% clear sound and powerful the output filter inductor i have used a lg home thieatre chopper transformer secondary winding and the supply v am using +110-0--110 driving the two 18inche speakers at full power

94. what is the correct setting of the trimpot

95. happy new year. am interested in the 4k5 amplifier and i want to test it, kindly email me the total cost of all components and pcb boards for six channels. my email is [email protected]

96. Mas wahyu minta layout d4k5 yang pdf donk .... Mau lihat bagian ocp nya trimakasih banyak kirim ke [email protected]

97. Sr plz tell me 4k5 use for. Subwoofer low pass any changes plz tell mail [email protected]

98. Sr plz tell me cd 4049 ic pin 3 pcb in work but Systematic in pin 3 open. Nd pin 12+13 in pcb. But systematic in open Nd ir2110. Ic. Pin13 in systematic open. But in pcb use plz. What's right mail [email protected]

99. hi sir can i use the other colour core ,except of red colour.

100. Merhaba ilk önce size teşekkür ederim başarıların devamını dilerim size bir sorum olacaktı kondansator lerden c2 c3 c4 sadece 10N ve 1N var volt lari hakkında bir bilgi yok almaya çalıştığımda bilgi istiyorlar 10N diyorum öyle bir şey yok diyorlar yardımcı olursanız sevinirim

101. Devreyi çalıştırabilen oldumu arkadaşlar şematik farklı pcb den ve IR2110 VSS pini boşta.
Hi Dear , Schematic is different from pcb. Why .? IR2110 VSS pin is no connect .? How can I work with this schematic .? Thanks in advance ..

102. Which type core use for 4k5amp iron for or scendust core ,iron dust core please suggest me

103. This comment has been removed by the author.

104. how to buy the class d d4k5 pcb ?

105. comprei a placa do amplificador classe d 4k5 na jlc pcb
fiz a montagem da placa ,funcionou , porem ta aquecendo os dos resistores de 22r 2w
gostaria de saber o que poderia ta ocasionando o aquecimento desses resistores?

106. Wahyu Eko Romadhon When I plugged the 90vdc into it, I lost the ir2110 led light

1. first please check with no bias voltage.

107. hello sir. do you have a schematic for the power supply? thanks

108. Sir how mach of maximum Voteg use this amplifier board

109. you can send garbar file plz

110. Sir I am try this circuit but my ic ir2210 is damage.... Is exploding ...
Can you help😔

111. plz send clean pcb layout

112. Hi! Please explain me, why are you connect NC pins in CD4049? I try to undertand, but nobody don't no. Please give me information when u find this schematic? [email protected]

113. I have seen your file but the file quality is very fuzzy. I tested it by printing colored paper but it was not possible. can you give me a better quality file? hope you will help me. thank you so many, so much
[email protected]

114. Amigo este pdf no me sale de buena calidad

115. Hi, can the supply be raised to 130 vcc =/- to increase more power by just adding more mosfet

116. and also can we have a limiter circuits?

the components in the video you uploaded to youtube differ from the list
eg 1k resistors 1 watt or 1/4 watts do you know
Listedekilerle videodakiler farklı gibi geldi bana devreyi yapan var mı

118. Ya casi lo termino solo que no consigo el mur860 ni el mur 460

119. hi bro this circuits volt and amps what............. how to watts calculation
any formula

120. Hi!
Just finished soldering the pcb but my 6k8/2w resistors are heating up and starts smoking. Why does it do that?
And can i test this amp with normal power supply +12 and ground?

1. Jncrease 8k2 5W

121. Who build this amp, does this circuit working ?

122. ALGUEM TEM ESTE ARQUIVO GERB , PARA MANDAR PARA MEU EMAIL ([email protected] )

123. amplificador digital 4k5, quero o arquivo gerb

124. Hi I am Sunil from india. This circuit tested OK 100% real,I am use power supply Ac 55-0-55 volt 10 Amp, what is the correct setting of the trimpot, Thank for schematic and PCB gerber file

1. the trimpot for setting Over Current Protection, for test u must have load test and current meter to see deeply.

125. Una pregunta cuánto voltaje se le pone para que ande bien gracias

126. Amigo se me calienta la bobina que referencia es el núcleo de esa bobina que calibre de alambre y cuantas vueltas le damos no tengo un medidor de iductancia