Wednesday, December 05, 2018

High Power Class-D Amplifier D4K5

Power Amplifier Class D D4k5 1000W 4500W

This High Power Amplifier circuit is a class D power amplifier, which has a high enough power to generate 1000W of power at 8 Ohm impedance - and also more power up to 2000W at 4 Ohm impedance. This Power Amplifier can generate great power if given enough power supply. For example, you can use 30A transformer with 100V symmetric voltage.  Here is the circuit scheme of High Power Class-D Amplifier D4K5:
Power Amplifier Class D D4K5 4500W Circuit Diagram
View larger schematic image here: Power Amplifier Class-D D4K5

Component List
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
R14, R15=4R7
R22, R23, R24, R25, R31, R33=47R
R28, R29, R30=0,1R/2W
R36, R38=22R/2W
RV1=10K Trimpot

C3, C4=1N
C7, C9, C11, C12, C13, C15, C16, C18, C19=100N MKP
C10, C14, C17=100uF/16V
C21, C22, C23=220N/475V
C24, C25, C26=470uF/180V
C27, C31, C33=100N/275V
C28, C29, C30=470uF/180V

D1, D2, D5, D10, D11= 1N4148
D3, D4= ZD5V6
D6, D18, D19= MUR460
D8= ZD5V6
D12,D13,D14,D15,D16,D17= 1N5819

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

U1= TL071
Q2= CD4049
Q3= IR2110
U2= NE555
U3= LM311
Class d power amplifier circuit
ir2110 irfp4227 mur460 mur860 cd4049 tl071

The Power Amplifier is using view components and this power amplifier include 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
PCB Layout Class D 4500W power amplifier
View larger PCB Layout Design: PCB Class-D D4K5
DOWNLOAD PCB .PDF: PCB Layout Design Class D D4K5

How to make Class D Power Amplifier [VIDEO]

Below step by step how to make yourself PCB board for this power amplifier [VIDEO]

Video updated Double Layer PCB from JLCPCB

Electronic Circuit is a good site for hobbyist also who would like to try DIY because it shared good circuits. If you have a personalized circuit requirement you may feel free to request it through the comment box or contact me.


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

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

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

Please will u tell about the LF coil u used

Hello sir lf coil core is iron core?

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

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Hello you can using iron core about 10uH

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

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

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

This circuit respond full range or sub bass thank sir.

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

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

Como descargar el pcb layout del amplificador por favor ayúdame

hello I'm Revocatus from Tanzania I need the finished board D4K5, what is the price par piece?

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

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

I am tested irfp250n 1pair MOSFET.

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

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

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

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

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

How can I purchase PCB of d4k5 sir please reply

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

Please sir reply me how can I purchase d4k5 pcb.
My mailbid is

Amigo vc pode mim enviar o arquivo no proteus ares no

what about power supply, I need that diagram too

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

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.

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

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

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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.

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.

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. is mail box. 😂😂😂😂😂😂

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

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

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

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

its more efficiency this class d

amigo puedes pasarme el archivo en proteus?

amigo puedes enviarme el archivo en proteus

Q2= CD4049
Q3= IR2110 not found my Proteus 8.4

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

next i will make a gerber files for this pcb

you can make it your own design

yes its connected with - rails.

Is it -12volt or 0 volt?.

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.

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.

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?

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

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

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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Where buy this PCB?

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

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

see the class d test with lf coil details (out put coil) please see the full on link

pranatosh tech channel

schematics and pcb layout dont match??

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

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"

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

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

Hi this is full bridge Class D?

kindly share eagle file or gerber file please

Hey Sir Can i Get Your Email id

Hey Sir i am ravi can i Get your email id

Can you send me your email id

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the author does not respond

Hi,I need a gerber file of 4500W High Power Class-D Amplifier D4K5, so what is the price.
Please reply in time. Thanks.

Hi,this is Revocatus ( I need a gerber file of 4500W High Power Class-D Amplifier D4K5, so what is the price.
Please reply in time. Thanks.

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

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..

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

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

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

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

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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

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

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

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

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

Maybe gerber files i will update

yes pls upload gerber or you can send pls on

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

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

yes i will upload it, please see also my youtube channel

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

tôi cân sơ đồ chi tiec mạch class d 4k5

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.

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

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

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

is this inductor good

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

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

Hello Brother i'm not from your field but I like this type of work so right now i'm zero in your knowledge skills but i like this Super class-D amplifier.. I don't know this components properly and i can't assemble it so please will you tell me how i can buy this Super class-D please I already message in your Youtube video and i subscribed on your hard working lot of efforts channel : ) please tell me how i can buy it and tell me the price if it is affordable to my budget then sure i'll buy it thank you Bro for creating such a nice amplifier : )

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

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!

Where to buy the kits of this power please

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.

The main power is + - 90 volts.

To purchase the product, please go to the following site.
It is described in detail so that you can purchase the product.

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"

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

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)

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

what is the correct setting of the trimpot

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

Mas wahyu minta layout d4k5 yang pdf donk .... Mau lihat bagian ocp nya trimakasih banyak kirim ke

Sr plz tell me 4k5 use for. Subwoofer low pass any changes plz tell mail singhsarari87@gmail.ckm

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

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

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

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 ..

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

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how to buy the class d d4k5 pcb ?

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?

Wahyu Eko Romadhon When I plugged the 90vdc into it, I lost the ir2110 led light
Please help me solve this problem?

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

Sir how mach of maximum Voteg use this amplifier board

I have built a D4K5 amplifier from pcb ordered from JLCPCB. I have a problem when I power up the amplifier the LED D8 switches off and no audio output. If I measure the voltage on R8 it drops from 2.2v down to about 0.8v, but the voltage one R7 remains at -5.8v. So there is no +5v for the TL071 IC? I have changed R7 and R8 from 6k8 to 10K. Any suggestions on how to get the amplifier working would be appreciated.

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

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?

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

Amigo este pdf no me sale de buena calidad

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

and also can we have a limiter circuits?

hello pcb I have not received information about component voltages,
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

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

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

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?

Who build this amp, does this circuit working ?


amplificador digital 4k5, quero o arquivo gerb

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