Build 300B SE tube (valve) amplifier with toroidal transformers

Подписаться 3,5 тыс.

Просмотров 204 тыс.

50% 1

I read somewhere that a bad amplifier can't be made with a 300B tube (valve).
This is my attempt with the standard scheme but with toroidal transformers (Toroidy) and with a slight modification of the scheme. I added the PS anti-noise part (see Aikido SE output stage).
Schemes and photos:
drive.google.com/drive/folder...

Наука

Опубликовано:

11 ноя 2019

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист

Посмотреть позже

Комментарии : 457

@Fetishom 3 года назад

I've seen many diy stuff for years but this is a piece of art. You my friend have a sense of design that is in every detail tobe not only efficient but beautiful. Hats off. I wish I could do the same (having access to more equipment helps...)

@connectionswellbeingchoir6784 4 года назад

Those valves are works of art, beautifully complimented by your exquisite workmanship. Congratulations.

@DennisSantos 4 года назад

Love the inside of the chassis - how the components are neatly laid out in contrast to vintage electronics where they look like a bird's nest of wires. Beautiful.

@MrRasgabriel 3 года назад

That was really cool to watch. I dont know anything about electronics other than how to plug them together. this is so awesome!

@Ratgon 3 года назад

It really is mesmerizing with how beautiful and precise the work is.

@milanmihajlovic8569 2 года назад

Sve čestitke za vrlo dobrom obavljenom poslu. Ovo je za primer. Elegantno, precizno i kvalitetno.

@DasFlughoernchen 4 года назад

Love the Soundtrack of your video. "Smoke filled rooms" is a great album. Your amp build is awesome - feel motivated now.

@tonybalm1513 4 года назад

Glad to see somebody building their own equipment especially valve. I still have my late father's amp's and pre-amp he originally built in the late 50's and then rebuilt for me in the mid 90's his own design. They still work perfectly today!

@stanislavmilovanovic1732 3 года назад

Bravo na izuzetnom radu. Sve je pedantno uradjeno i prosto se ne može naći primedba. Kao da ga je radila neka brendirana firma. Još jednom BRAVO i pozdrav iz Beograda.

@danielstanleywilkin 4 года назад

Wow! Rare to see DIY audio done with such skill and attention to detail! I bet it sounds as good as it looks :)

@erikjohnson2976 2 года назад

Thank you so much for this. I've downloaded your complete plans set and this looks pretty straightforward. It'll be a while before I complete the project, but I will add to the community by creating a new video of the final project and attribute the design to you. Again, superb work and thank you for sharing.

@harmonsalmon7739 2 года назад

Thank you, Rob, for your attention to detail and execution of the highest order.

@SigRossi-jn3kb 4 года назад

Beautiful job. A masterpiece.

@andrealai4237 4 года назад

Really great and accurate design and manufacture. Every second of the video is full of hints.

@Mosfet510 4 года назад

I like the attention to detail, really good build!

@cobar5342 Месяц назад

Beautiful work. Great to see your adjustments too

@franciscofortunato1864 2 месяца назад

Mágico trabajo, ejecutado con amor, ha sido como ver a un lutier, fabricar su guitarra o su laúd! Gracias!

@electronicsafrica 3 года назад

absolute genius ... definitely the best looking tube amp on youtube ... must build this before i die ... thank you for sharing on google drive so i can start doing my homework

@normbal Год назад

A work of art - and science. Thank you for sharing (and making) this.

@australianbloke3934 4 года назад

Beautiful job Robert. Well done.

@acghifiaudio-vinyland78rpm53 2 года назад

Very nice build! I have built one with the same schematic and will add the anti-noise part C2+C3 connection to reduce noise. Thank you very much for the hint, didn't know about it and can't see it mentioned in Popovich book either. Thanks again!

@mschorer 4 года назад

Congrats! Great project, great craftsmanship and nice background music 👍

@OrganNLou 3 года назад

Gorgeous build on this amp BRAVO!!!

@ghanichong9963 5 месяцев назад

Sounds great to me, i listen Silvaweld 300B monoblocks at home. Beautiful craftsmanship 👍👍👍

@srschhina5295 9 месяцев назад

Top notch craftsmanship 👍🏼

@nealdenisco8371 3 года назад

not sure how i got here, but thank you. oddly satisfying to watch.

@Sonic_Ox 4 года назад

Absolutely beautiful build Robert. I love the CNC work on the cabinet and of course the layout of the electronic components. I built a kit into a Pink Floyd lunchbox and it came out great! It was not nearly as complex as your build, and it uses a pcb board but works and sounds great with my old JBL speakers. I rebuilt an old iPod which contains my entire music collection and the setup sounds great to my ears. I'm sure some hifi purists would critique my system to death but it sounds wonderful to me and that is all that matters lol. Like you, electronics are a hobby I use to amuse myself. I don't need to keep customers (or critics) happy lol. I got the kit from Tube Depot in the U.S. If anyone is interested. I believe I paid around $400 for all of the components.

@csavkoor 4 года назад

Gorgeous! Very nice build!

3 года назад

Wonderful craftsmanship.

@rmzidann 11 месяцев назад

Wow, looks beautiful! 👍

@andjelkojakovljevic7462 3 года назад

bravo majstore, izgleda fantastično a kladim se da isto tako fantastično i zvuči

@Leeloo102007 4 года назад

Work of art!! If I were to make one change it would be to use a stepped attenuator instead of the volume pot you have.

@dingskydongsky 4 года назад

Wow ! Amazing work sir !

@orronoco524 4 года назад

Excellent build, very neat indeed

@stardio3011 4 года назад

This is a good video. It is a well-made product. Congratulations!!

@uncled39 Год назад

Beautiful work.

@bentleygt3716 3 месяца назад

great job. and beautiful looking Amp.. Kudos 👍.

@allthegearnoidea6752 2 года назад

Thanks for sharing a lovely build. Regards Chris

@massimobianchi4262 4 года назад

Very good job! Perfect wiring!

@EasyMusic36 2 года назад

Good Job. Congratulations!!!

@eivindamundsen7090 4 года назад

Beautiful build

@md10591 4 года назад

nice wiring job , good realisation ! bravo .

@EUC_Senior 3 года назад

Good job! Sounds great!

@chailatthitham3580 2 года назад

Absolutely remarkable DIY in 2022 I was a little confused to follow your steps..but Thank your for presentation good Video… Best regards

@roynexus6 4 года назад

Beautiful build.

@nlo114 4 года назад

A Lovely Job. Good soldering skill is important, as you have found out ;-) . I'd be tempted on the Mk II version to fit the input switch at the back panel, with an insulating shaft to the front control. This is a project that is as good on the eye as it hopefully is on the ear.

@MarekZelek Год назад

A piece of art! 🥰

@ashokmohanvipula6667 4 года назад

loved watching a perfect job ! would love to listen to it !

@hi-fihaven2257 4 года назад

Awesome project! Great work on the video.

@omgwtfpwnd 4 года назад

Jesus, do you comment on every single video related to audio? Lol.

@hi-fihaven2257 4 года назад

@@omgwtfpwnd Do you troll all of my comments. I only leave constructive ones. You must really be bored.

@ronniefranks4351 4 года назад

Very, very nice! Wish I could hear it.

@danielmelendrez1616 2 года назад

What an absolute beauty!

@wayneaustin7 4 года назад

Really awesome work! Wish i could do that!

@iansyme3535 4 года назад

Very neat and tidy with much thought put in to the actual physical layout. You must have had your nephew do the dicky solder joint because all the others I saw were damn near perfect!

@tomislavgasparic8100 4 года назад

Very nice job, bravo!

@chubtoad157 4 года назад

A masterpiece. I just wish this video was ten hours long so I could copy your work. 😁

@rukosody420 3 года назад

Lijepo izgleda, Nadam se I da isto tako zvuci. Haj-Faj uzivaj.....

@isaiahhiggins Год назад

this video makes me happy, thanks

@josedias4664 9 месяцев назад

ESPETACULAR !seu trabalho é perfeito parabéns,arrumei vários amplificadores a válvula no começo de carreira, som ótimo !

@losaikosavetheearth4215 3 года назад

I'm building one. It looks great!!!

@MicrobyteAlan 4 года назад

Nice build

@angeloc700 2 года назад

Damn - I hate you for building something that inspires me to build something. There are already too many beautiful things I want to build. Grrr.

@TM-jq6fe 2 года назад

Nice job!

@Lasse3 4 года назад

That's some smooth jazz music!

@duantorruellas716 4 года назад

That's a sweet 300 👍

@wingtang2380 Год назад

Multumim dl Zovko! 👍👍👍🌹🌹🌹 好好好

@woshine 3 года назад

woshine 1초 전 소리가 너무 선명하고 부드럽습니다, 똑같은것으로 하나 가지고 싶습니다

@TitofBee Год назад

Very nice Work

@takgrafive 2 года назад

Love it & thanks so much for sharing

@laurentiuistode4143 2 года назад

Multumim dl Robert!

@gearguy98 4 года назад

Magnificent!

@shidongxu3410 4 года назад

You did a good job with this demonstration.

@eduardojacome9783 2 года назад

Wow 😮 hermoso amplificador ...! 👋

@jonathanrigby8055 4 года назад

This is absolutely beautiful. I've been wanting to build an amplifier and stumbled across yours. Love the look and the attention to detail in the build. I would like to try to recreate this but with a different finish on the wood, black powder coating on the aluminum sheet, and black knobs. Could you help me with the specs on the power transformer? If I was to have this made, would I only need to specify my line voltage and the secondary voltages, or is there more to it than that? Would you mind sharing whatever specs I would need to have one built for myself with a 120V primary? Any help is very much appreciated.

@lespaul6550 4 года назад

Great job!

@astritrexhmataj4737 4 года назад

Thank you ROBERT.

@dargall1 4 года назад

Wow. Beautiful

@ultmworio76 4 года назад

very nice job👏👏👏

@MisterGibse 2 года назад

Great project Robert. And thanks for sharing your design. I have decided to use your video as a guide to build this tube amp. Was there a specific reason choosing KPCU-01 over MPK-14 for 0.22 uf? Given the price difference?

@RobertZovko 2 года назад

In this case I prefer the sound of copper-polypropylene-paper or PIO

@vallejobuilds2188 3 года назад

Fuck man this is a beauty! Going to try to see if I can do it, thanks for the inspiration

@bobvaningen578 3 года назад

Masterpiece!

@laurentiuistode4143 Год назад

Multumim dl Zovko!

@stevemurray7216 4 года назад

Hi Robert, very nice build. Love the toroidal transformers! I built a very similar one a while ago, but I cheated and used a PCB to mount all the components (from Douk Audio) and "normal" Hammond transformers - 378X and two 1630SEA I also used a different heater regulator that Rod Coleman designed which was a great improvement over the LM1084 regulator the original design was using. I especially like the vented chassis plates you used to mount the tube bases - where did you get those from?

@RobertZovko 4 года назад

like this www.ebay.com/itm/Lot4-vintage-vacuum-tube-shock-proof-plates-fr-8Pin-octal-tube-socket-KT88KT6-JF-/254558646587?hash=item3b44e0b13b or see aliexpress

@stevenclarke5606 3 года назад

Quality craftsmanship, I really liked the laser etching. How many hours did it take you?

@RobertZovko 3 года назад

Drying, half an hour and laser operation for a few minutes.

@electronicsafrica 3 года назад

love the toroidal transformers ... the old plate metal transformers look so darn klunky...

@fluiddynamicist 4 года назад

Jos jednom, svaka cast. Vas rad je rad umetnika. Pitanje: da li ste sasvim zadovoljni toroidima, ili je ipak bolje ici sa klasicnim transformatorima? ( your work is the work of an artist! Quesion: are you totall satisfied with toroial transformers or would you have gone back to the client c ones?)

@RobertZovko 4 года назад

Rad sa toroidnim transformatorima je više dokazivanje sebi da isti mogu raditi u SE režimu, kako sam na više foruma našao da toroidni ne mogu raditi sa DC strujom zbog nedostatka proreza. Na kraju sam ugodno iznenađen kvalitetom zvuka koji isti pružaju. Što je bolje? Ne bi ulazio u tu polemiku, ja osobno sam zadovoljan sam snagom i zvukom...

@floshi6519 4 года назад

Wonderful!

@normalman6686 4 года назад

Well done. Enjoy.

@jiriza84641 Год назад

I want one now!!

@elcarluz 4 года назад

Excelente trabalho! Saudações do Brasil .

@johngray8606 4 года назад

Hello Robert, very tidy layout, I wish you had some narration instead of music. Excellent video, well done.👏👏👏👏👏

@MisterBigwolf 3 года назад

May you list nominal voltages and currents for each secondary winding in power toroid, diameter of wire (or something except 10H 250mA) for choke toroid, and most important - parameters for output toroids please? Exactly what you ordered from factory. I need to order toroids, but I don't know parameters. You may list them on google drive too.

@vespass225 3 года назад

This is absolutely top notch craftmanship. Exquisite and professional work in every detail. Deepest respect from me. All the best, from Magnus, Sweden P.S. Where in Makarska is it ? Only been to Baska Voda yet....!. D.S.

@RobertZovko 3 года назад

Makarska is 10 km south of Baska Voda .

@vespass225 3 года назад

@@RobertZovko Hi Robert, and thanks for quick answer! Almost as soon as I had posted my comment, I remembered that Baska Voda was situated in an area called "The Makarska Riviera" around the capital city Makarska. I was there with my family in 2007, when the children were small. All the best, Magnus

@vespass225 3 года назад

Hi again, Robert! Have you been happy with the sound from your marvellously well built amp? What kind of speakers have you used? What is your estimated output ? ( I assume it is a single ended triode type amp, running in class A )

@rotaxtwin 4 года назад

Super tasteful. Only the finest fixtures, toroids... What else could you want?

@heryoneheryone3664 4 года назад

Good job

@SuperFredAZ 3 года назад

This is a work of "Electronic Art", I hope it sounds as good as it looks.

@jerryvr 4 года назад

Very well designed! love the layout in the inside. It is a pity that we cannot hear how the amp sounds.

@RobertZovko 4 года назад

I would love to hear your opinions on audio, but it really doesn't make sense to put "interpretation" of audio from an amplifier on a youtube channel. They will listen to your amplifier and your speakers, not mine.

@jerryvr 4 года назад

@@RobertZovko Very true, I understand it is because of the limitations of RU-vid but seeing the amplifier it made me very curious to hear how it sounds :)

@dreadlock17 2 года назад

Amazing

@sundarAKintelart 4 года назад

Very nice.

@gunnarguggs2725 4 года назад

Fantastic. I think a coke-bottle 5U4G would add to the already awesome appearance.

@RobertZovko 4 года назад

Already done

@obicancovjek7223 8 месяцев назад

Svaka čast, pravi ste znalac i u teorijskom i praktičnom smislu. O cijevnim pojačalima jako malo znam, a napravio sam tranzistorca 2x200W/8ohm. Želja mi je za njega napraviti cijevno pretpojačalo s pojačanjem 3-5x. Možete li mi preporučiti neku jednostavnu shemu takvog pretpojačala koje bi ja kao netko tko nikad nije radio sa cijevima možda uspio sastaviti? Još jedno informativno pitanje: Što mislite o circlotron cijevnim pojačalima? Jel istina da imaju bolji damping faktor od ostalih topologija i da lako kontroliraju zvučnike s kompleksnom višestaznom skretnicom??

@JohnEricBooth 2 года назад

Terrific build! How's the bass response Robert? I'm running a pair of 2nd generation Klipsch Cornwall. I've procrastinated an amp build for awhile, however I have built a preamp which sounds wonderful.

@RobertZovko 2 года назад

I don't have overly high quality speakers (Mission around 92dB), but the bass on them sounds decent.

@ReferenceFidelityComponents Год назад

Just one point of note as a loudspeaker engineer and manufacturer…SE amps, especially low powered SET amps have not got enough damping factor for any conventional 8 ohm or less speaker. Too high an output impedance. For bass control you should look to a Class AB PP design employing a lot of GNF for low output impedance. SET amps are fine for higher impedance speakers such as compression driver horn speakers but not suited to conventional speakers. People confuse power and bandwidth for control but all that matters is an amplifiers output impedance (NOT the speaker taps at 4 or 8 ohms but the actual impedance of the output transformer’s windings which typically for such an SE amp might be 2 to 3 ohms…very low damping factor as a result). I apoteciate though that this is an OTL so output impedance will be less= better control.