DIY Powerful Ultra Bass Stereo Amplifier using D718 Transistor With Volume Controller 

New Powerful Amplifier at HOME ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-zUjZsmW9JQ8.html

I built this circuit to try it. It does work and it sounds pretty good. However, with a 1k bias resistor at 14Volts, a transistor with an hfe of 30 will send about 400mA DC through the speaker coil! There are better ways to drive speakers.

D718 has a maximum 80 watt collector dissipation (with maximum collector current 8Amp) and as shown in a video 12 volt wall PS is a limiting factor. My guess that wall wort is rated at 12 volts @2 Amps. Assuming equivalent split between left and right we can expect DC input power of 12 watts per channel. For class AB biased transistor operation that offers a compromise between signal-to-noise (SNR), low THD+N, we can expect up to 65% efficiency. As shown, probably around 7W of audio during bass passages is being kinda generous estimate. A schematic should have been shown at the beginning of the video.

Está buenísimo. Saludos desde Perú 🇵🇪

Recommendation for you guys: DIY Heavy Bass Powerful Amplifier Of TDA2002 IC With Bass Controller - (Class AB) Link: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-kpA7fZMUOaw.html

Super bass wonderful idea thank you.

Yo no sé nada de esto pero admiro el trabajo limpio y ordenado, en pocos videos he visto eso, la mayoría solo quiere impresionar conectado a lo loco y desordenado, felicitaciones excelente trabajo 👍

Excelente trabajo amigo, gracias por compartirlo, saludos desde Venezuela...!

Sederhana kitnya suara oke punya...lanjutkan mas...sukses slalu

o melhor projeto de amplificador que já vi !

lo felicito por construir este potente amplificador , me gusto mucho es muy sencillo de fabricar

Não entendo muito mais acho super bacana o trabalho de vcs 👍👍👍

Muito bom e fácil de fazer para iniciantes

É o melhor que já v, excelente.

SIR, I just make this amp one side and it plays clean and nice I love it now I would want to go bigger with this setup

Hola gracias capo muy simple y bien esplicado genio

Manteb juga praktis

Excellent!!!

Very good bass, mid and treble (thank you very much)

boa noite meu amigo. gostei do seu amplificador. parabens

Why would anyone do this? This is class A amplifier, this is only used for transistor preamplifiers. The efficiency is poor and you have a large current thru the speaker in idle. Not knowing the actual current thru the speaker can burn it easily. Also the membrane is not in its ideal position in idle. Buy some $2 D class amps on net and you'll be fine.

Olá pessoal, gostei do som no projeto, parabéns CBZ Привет, ребята, звук в проекте понравился, поздравляем CBZ \i liked the sound in this project Congratulations CBZ.

woow great job who's with me here

mantap bang totorial aku sangat suka sama vidio abang

Mantap Wak moga sukses selalu

Respect you brother I made it and I won, very nice

Waw. Tutorial. Nya. Keren. Mantul. Mantap❤❤❤

Mantap jiwa bos..

One or two transistor power is not suppicient strong outpot..good differincial and powerdrive transistor then 4 transistor boost up audio out..but still good job sir congrants..

Ultra bass 👍 karya wow

parabéns brother 👍

Wowwww it's cool I wil tray at home

Excellent One

Beautiful tech

Beleza pura, e so encostar o auto-falanten na beirada da mesa que os graves resonava bem melhor. Parabeens!

wow i liked it a lot

Nice amplifier bro

"A" class power amplifier, simple and very good!

Rất cảm ơn bạn !

Very nice projects that you do, I would love to try them some time. Although I would like to add that SAFETY construction is lacking in your projects.....Amplifiers get hot, poor soldering connections can become loose very easy in your projects, there are no fuses that I saw in this particular project. On point to point electronic construction soldering must be strong and reliable. Flying all the electronics on your projects looks nice and neat but it's extremely dangerous and unsafe. Your projects are great for practicing and learning electronics but I wouldn't put them to use like a regular peace of electronic devices. I think you should add schematics and a possible explanation of how the amp works. Thanks you for your videos, I will continue watching them and see if I see something that I would really want to build.

Big project. I would like to know what specifications the toroidal coil should have? thanks

Elinize sağlık, mükemmel, basit bas-tiz kontrol yaparmısınız buna ilave ek olarak 👏

Nice 1, I wish you all the success.🙏

nice video

Excelente!!

fiz aqui e deu certo... mto obrigado por compartilhar.... valeu e sucesso pra vc.... from Brazil.

Excelente!!!!! Montei aqui no Brazil e funcionou espetacularmente . Obrigado cbz.

Muito bom!

MUY BUENO , LO HARE GRACIAS DESDE MEXICO

Good job

Perfect

Joao Alves gostei do teu trabalho.

Excelente amigo grasias lobo ayebar acabo grasias.

The idle current of the transistors runs trough the speakers!

Very nice pro

Muito bom 👏🏻👏🏻👏🏻

i like it

Hola, este es mi primer aporte al canal, yo le pondrìa un condensador de 1000uF o 2200uF por 25V en serie con los altavoces para desacoplar la continua. Un saludo, Rafael. Hello, this is my first contribution to the channel, I would put a capacitor of 1000uF or 2200uF for 25V in series with the speakers to decouple the DC. Greetings, Rafael.

2 эмитера вместе, между базой и колектором один килоом резистор это мало для смещения, на базы с двух каналов подал сигнал, питание через дросели это щитай напрямую, короче охренеть схемка динамики сжигать и грется как от печки когда холодно:)

Muito bom. Great! I need project.

excellent

En caso de q no encuentre el transistor D718 cuál más me recomiendas

completely crazy !! Listen to a loudspeaker without box !!!!!!!!!!

Funciona, pero se calienta. hay que poner un fan cooler?

That's so cool !

That is really amazing with just 2 transistors..

That toroidal coil has not specification or any smbols?

very nice

check the Output where the Speaker connects is there any DC voltage?

exelent

Cool.

Muito bom 👍👍

hola muy buen trabajo, pero ya en la etapa de salida se podria colocar un condensador para filtrar la corriente continua no se digo yo pero esta buenisimo

Not mentioned, how many dc voltage can be fit with the said circuit???

Awesome, I have multiple IRF 504 transistors, do they work instead of too d718 transistor?

Mantap joss

you will have dc voltage at speakers .that mean in any fault you can burn your speaker.

Nice

Super and super

Good job ,good Vidio , success

great

Mantap banget, cuman saya pemula kalau bisa cara merakitnya Jureng slouw, kurang pelan dikit.

Very nice design 👌

What is the Henry value of the torrodial coils?

Good backup

Hay quá bạn ơi

speaker curve,. menandakan chanel ini lokal wkwkwk

It works properly or not if i used both 22 k potentiometer??

Super

Es pero que es fantastico super

good amplifier I did cooler is getting very hot. I run it with 12 volt electricity. I used condenser 470uf / 25v instead of 474uf / 16v nice sound, I am an amateur amphitheater. I do it at my home. Thanks for the good sharing. I would appreciate if you could write the error.

Та самая сборка что я искал бро !!! Спасибо !!! С маня подписка и лайк ;-)

Como hago para aumentar la potencia???.....excelente proyecto se ve fácil ,gracias por tu aporte.....like

Osm

bravo

Mantap.bos joooss

@cbz proyect Excelente Video y aportete felicito buena construcción del amplificador y todo entendible, mi pregunta es la siguiente: de cuantos watts, Honmios es el amplificador, y como se pudiera aumentar la potencia con mas transistores (D718) de los que se usaron en este amplificador, Espero su pronta respuesta, saludos desde venezuela. Éxitos en sus proyectos.....

Nice bhai

Top demais

The potenciometer correct is 5Kb for equal impedance colpled