Thursday, February 07, 2019

DIY Stereo Yiroshi Power Amplifier 1400W

DIY Stereo Yiroshi Power Amplifier 1400W

This my second project for Yiroshi Power Amplifier Circuit, the power amplifier circuit is indeed very super quality, many have tested the strength of this Yiroshi power amplifier. Power amplifier yiroshi is suitable for outdoor or indoor. Previously I have made this yiroshi amp circuit in the mono version. I have also tested it in the unboxed state of the box, using only 2SC2922 and 2SA1943 final transistors, this amplifier is capable of high enough power until my speakers are damaged and also my smps is damaged This power amplifier is tough enough, none of my final transistors parallels broken.

here is the circuit scheme of the stereo power amplifier yiroshi, the scheme below is still the same with the yiroshi circuit that superpower driver before, only later will replace the transistor previously used TIP3055 and TIP2955 I replace it with transistor 2SC5200 and 2SA1943. Because the previous transistor has only a maximum voltage of 60Volt with a maximum current of 15Ampere, so it is advisable to use a larger transistor maximum voltage and current. If for 2SC5200 and 2SA1943 transistors this is enough for me, maximum CE CE voltage up to 230V and maximum current up to 15 Ampere.
stereo power amplifier yiroshi NJW0302 NJW0281
In the above circuit scheme is a combined stereo of two series of yiroshi power amplifiers, so to list the components to make it easier for you to buy, please just look at the previous post here Yiroshi Power Amplifier Circuit.

To make it easier for this yiroshi amplifier circuit you can use this PCB Layout design:
PCB Layout design for stereo power amplifier yiroshi.

PCB Final Transistor Parallel for stereo amplifier yiroshi driver.
PCB Layout transistor final for yiroshi amplifier

I have made this stereo yiroshi power amplifier circuit, but this is still in the test process stage. and it turns out for PCB Layout for the driver you have to reverse the position of all transistors, so the same face with the top component layout. Later you will be able to see the location and position of the transistor, after the power amplifier is finished and ready to be produced.

For the final transistor, on this yiroshi stereo amplifier project, I do not use transistor Toshiba 2sc5200 and 2sa1943 as well as sanken transistor 2sc2922 and 2sa1216.

I am using transistor NJW0302 and NJW0281, the transistor price of NJW0302 and NJW0281 is almost the same as Toshiba transistor 2sc5200 and 2sa1943.

Both transistors both have 150Watt power output, and IC 15Ampere but for VCEO and VCBO are different, a 20Volt difference is higher transistor NJW0302 and NJW0281, where the maximum voltage is 250Volt.

The following is a final transistor picture of NJW0302 which is embedded in the PCB:
transistor NJW0302 and NJW0281 VS 2SA1943 2SC5200

And this is the final transistor image I've paralleled using the PCB Design layout above.I am using 14 pairs of NJW0302 and NJW0281 transistors and for per channel yiroshi driver I use 7 pairs of transistors.
Parallel final transistor NJW0302 NJW0281
Already tested power amplifier yiroshi I will supply with 20Ampere 60Volt Switching Mode Power Supply 
Stereo Yiroshi power amplifier high power amp circuit


High Power Amplifier Class D fullbridge Deep Bass Ever test

Download File PCB Layout.PDF
PCB Stereo Yiroshi Amplifier
Transistor Final Top
Transistor Final Bottom

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.


Very nice love 😍 it! is this better than the previous Yiroshi without bias trimpot. Thanks a lot

Hello Mr. Manager.I would like to learn about your drawings, it is 800w 1000w, 1500, 1600w, 1700w, and what have you already test these montages? I need these montages, what are your conditions? Thank you, Yvon.DRC

I wish I could get sprint design full version or design spark full version even if it a cracking version. To rectify some class D pcb.

can you tell me the value of 2 capacity under the PCB of Final Transistor ?

the impedance that must be done WITH THE 1.5 THREAD, must be wrapped around the 10ohm resistance? how many turns should be made?,

Hello , when you have hesitation test it with 24 +/- Vcc and when it is ok test with max power 60+/- Vcc ,
I'm very impressed to the vibration to do this amplifier

Hi Mr Eko, Does can i get the printed pbc to this particular amplifier diagram? also where could be buy it and how much cost? Thank You...

it must upper than 2.0Ohms load.

Yeaaah,, you can do it sir.

You can download the PCB in the Download section, but for this PCB i havent ready to sell it.

Is it possible to send me better quality PCB, and layout files, also schematic diagram please

Where I have to connect 2 100n 2 75v capacitor under the pcb of final transistors ? I mean which pins of the circuit? It's not clear in the video.

I don't find component list
help me plz

This one is good,, but need to rebiased ,
Sometime there is small distortion thats why..
I made 4 pairs of 1943/5200 using 103 dc voltage rail and it is stable in 4 ohms load

Sir, i just want to ask how much power each each channel can produce if loaded with 8ohm,4ohm,and 2ohm.thanks

By the way I'm using 8 set of sanken 2sa1216 and 2sc2922 a total of 16transistors power output

And my power supply at 25ampere or even more at 90v symmetric

its up to 1000W if power supply large

its good power supply your amplifier is better than this

Cai i use this 2SC5200/2SA1943 ?

Yess you can use 2sc5200 and 2sa1943

Sir How can you help in buying a high quality transistor can u help me with a link

ola amigo...tengo una fuente de 126-0-126 voltios DC sera q estas targetas me sirven

hola a migo como yo podria adquirir ese amplificador contodo y fuente si lo envia fuere del pais o si tienes en venta la fuente conmutada voltage cimetrico para 18 trancitores 2sc5200 y 2sa1943

where can i buy these components sir? or better the kit...

sir mujhe 1400watt yiroshi power amplifier ka pcb and Components knha milege

whatts the cost of this amplifier

this is where you can purchase amplifier

can i use this amp driver circuit with +75 0 -75v dc ,in 1943 and 5200 transistor ?

hi were can i get the parts for these amps or can i get them as a kit, can someone help thanks

where can i buy the complit kit, driver board, auput board with components and the power supply

please i need company like but accept to print the circuit by pdf or pcblayout

PCB s and parts here follow links for each one

Hi Mr Wahyu Eko Romadhon please chare the correct schematic for the PCB Stereo Yiroshi Amplifier,many difference between the video and Pcb ,thank you.

Can i use mjl4302/mjl4281for the final transistor?

Hi sir i just need to ask where to adjust dc offset of this amp i need to adjust to 0V dc there's only one trimpot but adjust only for the current bias.

Bhai apne PCB draw karne ke liye kinda paper liya tha

hi sir pls give me the components list

get amp kit here

Hello. please give me the parts list, pcb's power supply source diagrams and all diagrams clear print out or soft copies. kindly provide me the complete estimate at thankx

sir i made this diagram and it worked well but the negative driver
transistor is heating can i bias it perfectly?

Hello. It is 8ohms impedance? or below? Tank you sir.

Thanks for this job and great job ....
I have some questions
1. Can i use this amplifier for 2ohm load ?
2. Can i use this for 4ohm load ?
3. What is the maximum dc voltage rails cbe used to operate this amplifier at maximum output? ,,, +140-0-(-140) dc can be used ???