Um, why the F didn't you put the PTM7950 on your CPU as well 🤦‍♂

I don't know why they discontinued this amp? I finally have enough savings to buy one and no local music store have it😭😭😭

I found it helped to smear a couple of drops of washing up detergent on the ends of the new hose to help thread it in.

The generator double beam tetrode GU-32 was made in the USSR, not in Russia, the main production of this model was done by the Lviv Electric Lamp Plant “Iskra”, in Ukraine. It has been out of production for a long time, due to a number of shortcomings - noise, size, heating, and most importantly, it requires a lot of transformers. Well, who wants to pick their nose - Russia will be making similar retro garbage for a long time, stolen 829B from RCA.

my old guitar teach, he has a fully decked out SLO100 from 2008. The fx loop and input jacks are both switchcraft jacks, but they used fiber isolation bushings. I'm copying the mods he had done and implementing them into a slo30 clone.

Hi i'm new to this channel. Can you share the value of the Pot. you used for the effects loop volume. Ohms and Wattage please?

In sort of reverse to this, I wonder how well you could make a pedal version of a tube preamp with these?

22:37 you're right that is a sick tone for doomy sludge

Sadly this hasn't helped my reference 6950 XT. It was constantly hitting 90+ and 100-105 degrees on the hotspot, but no change after replacing the stock paste with PTM7950

You lost me at 5:41 😭 🤣 Seriously, thanks for putting this video together though 😁

There was only 50 of the Revolution III 4X10 ever made , I have one and love it, redid the tolex and grill cloth - amp was made in 1975 so its 50 soon!

What you have there is a clone of the RCA 829B, designed to function as a push-pull VHF amplifier. I have a bunch, brand new RCA's. Want some? (Who am I? Retired RF engineer mid 60's..Been in RF since '70) Thousand of tubes in my collection. Maybe you guitar gods would like some 4-1000's, 4cx35000c, etc! LOL! 833a's?? 810's, 805.s 813's! I'd use the 813's myself for audio application. Matter of fact back in the 50's drive in's would use the 813 tube for audio. >700watts! AB1!

2 x fixed bias circuit will work

Waiting room for second video!

Try using a variac at 90 volts really makes a difference

What a soud quality check do you with an audio signal purposedly distorted?? On my phone spunded bad. Make the check with nearly sin wave signal and a high efficiency horn speaker cabinet.

By your description I can tell you it is able to do anything , as it is an amplifier in your radio too .

200 odds volt on a breadboard funkey! Like the idea but Anode load should be different than 6L6-GC.

Russia stayed with Tubes longer because of EMP effects from nuclear bombs, you have to harden electronics with shielding when using transistors and IC as the EMP effect can damage the junctions going S/C.Only Valves (tubes) can resist EMP without thick propper shielding casing.

Similar to an RCA829 RF amp tube. Most likely a Soviet copy!

Perhaps you will like the ГУ-50 better. A thousand years ago, when I was young, in the USSR, we used exactly these. By the way, ГУ-50 can be used with a radiator.

Wow this is literally my pos-soviet childhood dream coming true. I remember playing with those tubes at my grandfathers dacha and later when I started playing guitar and diving into electronics as a teenager when I visited my granddad I was always thinking - what if I could make an amplifier with this big weird cool-looking thing! But I couldn't due to my very limited knowledge. Thank you for bringing the good memories!

Talk talk talk, what for is the hat?

Cheap 12ax7,😅😅😅I always like to try😂😂😂🎉🎉🎉

"I want you know? I have listened to you, and had watched you carefully. You are very smart AND YOU KNOW YOUR FIELD OF INTEREST; I AM GLAD YOU WAS COMFORTABLE AND ACTED AS YOURSELF." KNOW THAT YOU HAVE FRIENDS ONLINE, SOME MAY JUST BE QUIET AND ONLY TALK AT Tmes."

Busy beezy😅😅😅 very quzzy😅😅😅pro🎉🎉🎉

стабилитрон необходим чтобы полевой транзистор не вышел из строя, оптимальное его напряжение до 10-12вольт

That, exactly that one, was my first electric guitar... wow... Then I bought another one of a better brand, one piece, active pickups and I don't know how many other things... but I rarely used it, because it was so exclusive, I didn't want anything to happen to it... absurd, I know... I know.... But well, I remember hours and hours studying with the RGX312... and I fantasized because it was, in appearance, the same as an ESP of kirk hammett, from Metallica, black with a beige handle... (if I didn't play like him, at least the guitar looked like his) hahaha... I ended up giving it away because I left the instrument... and now -20 years later- I miss it... I listen to "The call of Ktulu..." and I would like to play it... (yes, the twists and turns of life...) Your video brought back good memories and longing... You never know when something you produce can trigger an important memory and emotions in someone else... Thank you!

Musos just do not fully understand electronics. Their terminology is suggestive and ignores plain physics. All those long wire connections to the tube are bound to give interesting results. How about matching the Anode impedance to the output transformer for a start.

I built a guitar amp using a pair of Russian GK71s. Very nice 250 Watts RMS. Lots of feedback and 1800 plate volts.

My friend it is not if,it is sign of micro, correct your self before teaching others.

Omg GU29 looks like Soviet vodka bottle 🍾.. I think it works better with russian balalaika 🪕

Ты думаешь эта лампочка что-то может сделать? А как тебе лампа в метр высотой и с водяным охлаждением?

Ну ты и дятел, устроил опыт с длиннющими проводами, ладно х... с ним, а то что у лампы нужно настраивать рабочую точку и не каждый выходной трансформатор по сопротивлению подходит для этой рабочей точки не учёл.

so wat i mean is the sound is grad to me yas fine tuning must be done . BUT for matell i think is grad and wery power full . i cam from germany .

so thats sond to me grad . And yas it is hi end tube and i here that ,for a mattel gitar is the sond grad

Спасибо вам я увидел незадукоментированое применение лампы гу 29 для передатчиков в низких частотах)) 😅

What Rock did you crawl out from under, 6146, 807 ETC were all used in both Audio and RF Amps as were many others. The Soviet tubes became very popular after the US Stopped manufacture of Tubes or Valves as the Brits like to call them. the Russian tubes were not bad at all, in fact some were much more rugged than the North American equivalent. Think of the terrain they have and this will give you a start, then there is their lack of skilled technicians. The Canadians used the Russian Tubes in their tube gear the they could no longer acquire North American tubes. the Soviet tubes are reliable if nothing else.

Man that OP90 is perfect for Doom/Stoner Metal. I ordered some right away after hearing that

If the tube has separate cathodes, you can use two constant current cathode sources that will always keep the tube in balance regardless of tube age. Use a LM337 IC. for each cathode. Very simple to install or modify, Works great on my 50 yr old Heathkit stereo power amplifier. Adjust the current limiter to match the maximum plate dissipation. Will keep it very linear.

tube is kind of like a Sylvania 5894

GU-50 Mister !!!

I know super old video but it was quite entertaining watching your ram oc journey on this one^^ not too long ago i also tuned my 3200c14xmp bdie, but im running quite rare setup with 4x16gb so unfortunately 3466mt/s cl14 15 15 15 + somewhat tight subtimings was the max i managed to run on my 5950x. Im using x570 crosshair 8 hero mobo and with that ram setup the absolute max it could post was 3600mt/s but couldnt manage to stabilize it as well as 3533mt/s. If i had only two sticks it managed to boot 3800mt/s no issues but at 64gb in total it seems its waay too hard on memory controller. I tried absolutely everything, all SOC, VDDP, VDDG, procODT, DRAM voltage, RTT values, CAD values, everything something either mobo, ram sticks or cpu IMC just said nope. Oh well at least the gaming performance is fantastic, i basically get 15-25% better fps than those who use low quality xmp kits like 3600 cl18, so im happy with the result just a bit bummed with 3466

Double Tetrode GU29 is desingned for Vhf RF power reverse tacted amplifiers run up to 400Mhz And you will really amplify Audio Signals! Good luck with self oscillating generating and stressing the Neigbours Radios😉

This is a high frequency tube. Put the resistors in series, in the circuit of the first grids. As close to the tube as possible. Against excitation at high frequencies

40Watts on two anodes. В оригинале - мощность, длительно рассеиваемая анодами 40 Ватт

Does the shroud around it make it sound much louder. I have one without the plastic cover or shroud and it doesn't sound very loud.

You playing rock on Soviet tube, not it is Soviet Rock! ✊

Try with GU 50! worked carefully you will be amazed!

This tube is the Russian pendant to the QQE 06/40 that was widely used in amplifiers for frequency domain multiplex phone lines over coaxial cables (analog) . The QQE is also used by HAMs to build short wave transmitters. I have used rhe QQE to build RF-generators for scientific applications and also tried its russian cousin, which worked just as well.