Um, why the F didn't you put the PTM7950 on your CPU as well 🤦♂
@mohdtaufiqismailКүн бұрын
I don't know why they discontinued this amp? I finally have enough savings to buy one and no local music store have it😭😭😭
@gavinwilliams1687Күн бұрын
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.
@alikdeda82072 күн бұрын
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.
@ryankozak-et2tw3 күн бұрын
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.
@ver2512093 күн бұрын
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?
@AndrewWukusick3 күн бұрын
In sort of reverse to this, I wonder how well you could make a pedal version of a tube preamp with these?
@DATT3 күн бұрын
More trouble than it's worth. Their claim to fame is that they operate at high tube amp voltages, like 300-500v. Making a pedal that runs off 400v, hah, at the end of the day, they don't "sound" any better than a lower voltage transistor, and many have already crafted pedals using transistors in the same topology as a tube amp.
@AndrewWukusick3 күн бұрын
22:37 you're right that is a sick tone for doomy sludge
@DATT3 күн бұрын
I know right, Gross !
@raynefear4 күн бұрын
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
@DATT3 күн бұрын
Yeah eh, I don't feel it made a huge diff for me either. These cards can cook, a good paste won't make up for a weak cooler.
@jujujubees4 күн бұрын
You lost me at 5:41 😭 🤣 Seriously, thanks for putting this video together though 😁
@DATT3 күн бұрын
A yeah, removing that piece was a tricky one.
@crunchyflower4 күн бұрын
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!
@DATT3 күн бұрын
50 eh, yeah I think the owner of this amp was mentioning how rare it was. He's quite proud of it, even tho he doesn't quite know how to work with it.
@dalesmith86665 күн бұрын
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!
@DATT3 күн бұрын
Damn, and here I am thinking of scaling one of my 100w heads down to 50w. I dont' even know what to do with that much power, hahaha.
@moodyga407 күн бұрын
2 x fixed bias circuit will work
@DATT3 күн бұрын
What do you mean ? Like resistors on the cathodes instead of negative voltage on the control grids ?
@SilentioMortus7 күн бұрын
Waiting room for second video!
@DATT3 күн бұрын
It'll be a while, I havent' even filmed one yet, and I got soo many projects stacked up already.
@vox19667 күн бұрын
Try using a variac at 90 volts really makes a difference
@DATT3 күн бұрын
90 eh ? doesn't seem too low. I've never played with a variac.
@AdrianVay-kp6te7 күн бұрын
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.
@DATT3 күн бұрын
It's a metal guitar amp, the sound of the tube at full playing distortion is the only thing that matters. And amp of the nature can't even really do a proper clean tone. But yeah, my recording of that sound is not the best. Also, You can't really tell the sound of something from a recording, especially not listening on a phone.
@AdrianVay-kp6te3 күн бұрын
If you want to be good with fistortioms, then take a MOS amplifier coping with at least 500 kHz linear power output (f. ex. 300W), and drive with any signal you want. Bee careful it will blow the speaker and your ears because of too much and powerful high frequencies.
@jamesbeemer78558 күн бұрын
By your description I can tell you it is able to do anything , as it is an amplifier in your radio too .
@DATT3 күн бұрын
By my description ? It clearly can be an amplifier. There are examples of people who have built amps using it.
@jamesbeemer78553 күн бұрын
@@DATT this tube you experimented with is a two stage system . Two in one envelope . Um , and you say it came from a video system ? 😎 cool ! You can’t argue with that .
@jeldrikpetersen8 күн бұрын
200 odds volt on a breadboard funkey! Like the idea but Anode load should be different than 6L6-GC.
@DATT3 күн бұрын
200 out, 480v in !
@geoffhines15418 күн бұрын
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.
@ff5x28 күн бұрын
Vacuum tubes are still used for communication satellites today. they are much more reliable than transistors in conditions of cosmic radiation
@DATT3 күн бұрын
Damn, tubes in space! That's cool as frig.
@geoffhines15418 күн бұрын
Similar to an RCA829 RF amp tube. Most likely a Soviet copy!
@DATT3 күн бұрын
Pretty sure it is. Some other comments suggested it was the product of the US sharing tube designs with the Soviets round ww2ish.
@user-sl3il5sz2s8 күн бұрын
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.
@DATT3 күн бұрын
A radiator ? I have considered the 50, it seems a more standard type of tube.
@user-sl3il5sz2s2 күн бұрын
@@DATT The GU-50 has a flat aluminum frame on top. An aluminum finned radiator can be screwed to it in the center. Those used in the old days did not have a fan or thermal paste, but significantly eased the temperature regime when working at maximum power.
@user-mi4ej7vn1d8 күн бұрын
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!
@DATT3 күн бұрын
You're welcome !
@luiscremonini36359 күн бұрын
Talk talk talk, what for is the hat?
@DATT3 күн бұрын
It's my thinking cap
@joicejewerly55799 күн бұрын
Cheap 12ax7,😅😅😅I always like to try😂😂😂🎉🎉🎉
@DATT3 күн бұрын
It was hit or miss for some things.
@andymunnings91099 күн бұрын
"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."
@DATT3 күн бұрын
Thanks man !
@joicejewerly55799 күн бұрын
Busy beezy😅😅😅 very quzzy😅😅😅pro🎉🎉🎉
@DATT3 күн бұрын
Buzzy beez
@user-zp3tc1zx9b9 күн бұрын
стабилитрон необходим чтобы полевой транзистор не вышел из строя, оптимальное его напряжение до 10-12вольт
@DATT3 күн бұрын
Это было мое предположение. Этот полевой транзистор говорит максимум 16 В.
@user-zp3tc1zx9b3 күн бұрын
@@DATT , если напряжение истока не может расти, не поспевает за напряжением затвора, по разным причинам, например емкость нагрузки высокая или нагрузка слишком большая, или короткое замыкание на нагрузке, то потенциал между затвором и истоком может стать опасно высоким, если оно станет выше 12 вольт (для большинства полевых транзисторов) то произойдет пробой диэлектрика затвора, и транзистор сгорит. затвор-сток станет короткозамкнутым навсегда(так можно узнать как полевой транзистор сломался). для этого и нужен стабилитрон. есть полевые транзисторы со встроенным супрессором между затвором и истоком, но это не одно и тоже, ток такого супрессора очень маленький, как правело до одного миллиампера, поэтому в подобных схемах, когда нагрузка в истоке, необходимо включать в схему защитный стабилитрон.
@ernestochaveznuno26899 күн бұрын
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!
@DATT3 күн бұрын
Nice, you're welcome !
@borisj40549 күн бұрын
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.
@DATT3 күн бұрын
Oh yeah, the long leads did not help, hah, and I didn't think to change the plate load until later.
@borisj40549 күн бұрын
I built a guitar amp using a pair of Russian GK71s. Very nice 250 Watts RMS. Lots of feedback and 1800 plate volts.
@DATT3 күн бұрын
Oh wow, I looked it up, that tube is an absolute unit !
@dalwinderssi40949 күн бұрын
My friend it is not if,it is sign of micro, correct your self before teaching others.
@DATT3 күн бұрын
Oh I'm not teaching anyone. This is just a guy in his shop, trying something to see what happens, hopefully it entertains.
@vinodtavildar9 күн бұрын
Omg GU29 looks like Soviet vodka bottle 🍾.. I think it works better with russian balalaika 🪕
@DATT3 күн бұрын
It's possible the Gu29 can hold vodka better than the balalaika, hah
@user-fe1jw3ii2z10 күн бұрын
Ты думаешь эта лампочка что-то может сделать? А как тебе лампа в метр высотой и с водяным охлаждением?
@DATT3 күн бұрын
Это похоже на серьезную лампочку!
@pavelgrinh760810 күн бұрын
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.
@riasgremorypanasonic696810 күн бұрын
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 .
@DATT10 күн бұрын
Oh you like the sound ? OK. This isn't the best example. I have other videos about metal amps that are better.
@riasgremorypanasonic696810 күн бұрын
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
@DATT10 күн бұрын
I'm not sure I completely understand what you're saying, but thanks for watching !
@lansdragon254210 күн бұрын
Спасибо вам я увидел незадукоментированое применение лампы гу 29 для передатчиков в низких частотах)) 😅
@DATT10 күн бұрын
Ха-ха, пожалуйста
@courierdog194111 күн бұрын
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.
@DATT10 күн бұрын
Hah, the rock I was under only had guitar amps that used common current tubes.
@courierdog19416 күн бұрын
There still exists tube substitution manuals. I does take a while to find. there is a market for tube Power Amplifiers and maintaining them is becoming an art. Plus there are those who believe the spectral purity of the Tube/Valve Power Amplifier is superior to the equivalent solid state Power Amplifier
@DATT3 күн бұрын
@@courierdog1941 Spectral, haha, is there a reason you chose that word ? Seems fitting.
@AndrewWukusick11 күн бұрын
Man that OP90 is perfect for Doom/Stoner Metal. I ordered some right away after hearing that
@DATT10 күн бұрын
Nice, hopefully it glitches as hard for you as it did for me.
@KA9DSL11 күн бұрын
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.
@DATT10 күн бұрын
Yeah, that was one trick with this tube, a shared cathode.
@KA9DSL10 күн бұрын
@@DATT I thought so, like a 5894 tube, or 829a. yes, a common cathode.
@juststeve766511 күн бұрын
tube is kind of like a Sylvania 5894
@DATT10 күн бұрын
Hmm, yeah, looks like it from the Datasheet.
@EIRK2046Y11 күн бұрын
GU-50 Mister !!!
@DATT10 күн бұрын
What about it ?
@h1tzzYT12 күн бұрын
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
@DATT10 күн бұрын
I remember 3466 was the max stable I could get on my 2700x. I think that was with my old FlareX kit. Stock was 3200 flat 14, was damn good RAM. Got it when I got my 1700X and lasted me until I went 32gb. I have avoided 4 stick setups for that reason.
@h1tzzYT10 күн бұрын
@@DATT Yeah it seems its partially difficult for memory controller with 4x16gb of bdie. What i find interesting that if you look at 3950x official page there is a ram configuration spec sheet, both zen 2 and 3 have same mem controllers so it most likely applies to my 5950x as well, more or less. They state that 3950x officially supports: 2x1R DDR4-3200 2x2R DDR4-3200 4x1R DDR4-2933 4x2R DDR4-2667 So it basically aligns with my own experience as well, that "quad rank" is particularly hard to drive, the way i see it getting even to 3466mt/s is not so bad. My 5950x boots into 3600mt/s with all 64gb but only on second memory training attempt and all of memory stress tests fails relatively quickly like TM5. Maybe there is some magical RTT&VDDP setting but everything i saw get recommend for such ram config didnt bring any notable improvements, oh well at least i got ram for days :D
@DATT3 күн бұрын
@@h1tzzYT Heh, reminds of the frusterating with DDR5 training on my 7950X. Takes like 30 seconds to post cause it has to train every time. If I set it to not do that, there is a chance the system will be unstable.
@h1tzzYT3 күн бұрын
@@DATT Yeah i heard about long boot times on am5, ram oc is fun and very rewarding but can be very frustrating regardless of platform :)
@rodrigo.sanchez41112 күн бұрын
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😉
@DATT10 күн бұрын
Well, I ain't broadcasting, so I think it was completely localized, hah.
@zubrzubr676912 күн бұрын
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
@DATT10 күн бұрын
Yeah, lack of grid stoppers I figure was the problem.
@zubrzubr67699 күн бұрын
@@DATT I don"t know what they are called in English. But with such wires, generation may appear
@DATT3 күн бұрын
@@zubrzubr6769 Yeah, I kind of figured that out at some point. Sucks I didn't think of it in the video.
@zubrzubr676912 күн бұрын
40Watts on two anodes. В оригинале - мощность, длительно рассеиваемая анодами 40 Ватт
@DATT10 күн бұрын
So 40 watts total ? 20Watts each anode ? Итого 40 Вт? 20 Вт каждый анод?
@zubrzubr67699 күн бұрын
@@DATT Yes.
@DATT3 күн бұрын
@@zubrzubr6769 I thought so, thanks for the confirmation.
@irishguy20000712 күн бұрын
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.
@DATT10 күн бұрын
Yeah, it could I suppose. Resonance is a big thing in audio. Also, was it loud before ?
@irishguy20000710 күн бұрын
Okay here's my problem, I have removed a 3 pin buzzer from a board and replaced it with a three pin piezo plate from a smoke alarm. The sound now is low and I decided to dig open some of the original buzzer to find it contains at least a circuit with a transformer or coil. Now I'm confused because the two pin piezo buzzers usually have the driver circuitry build into it but not three pin buzzer?? I thought all three pin buzzers have no circuitry and one must add there own feedback circuitry to drive it. It's an sp-1359 from bell but contains this amplifier circuitry I presume? Obviously when I used the three pin piezo plate it works but much lower.
@DATT3 күн бұрын
@@irishguy200007 Well, I'm not an expert on this, I pretty much just figured out how to repurpose what I had on hand to work with. As I understand, the 3 pin piezos need a driver. Some 2 pins either are a self contained unit that you just give power to, or there are 2 pin piezos but they are often used in different applications. You could get a 2 pin piezo to do this kind of thing, but without the feedback pin, you'd have to manually figure out it's resonant FQ and build the circuit to drive that. It could be considerably quieter if it's not running at the correct FQ. I'm not sure how much help I can be, it's the kind of thing I could probably figure out, but Id' have to have it in hand at my bench.
@artip77713 күн бұрын
You playing rock on Soviet tube, not it is Soviet Rock! ✊
@user-bo8eq7ki5w12 күн бұрын
But the vacuum inside the tube is "Soviet")). (the joke of radio amateurs about the "capitalist and socialist vacuum" in tubes of the same type is better)))
@DATT10 күн бұрын
Hah !
@adriancomanescu788013 күн бұрын
Try with GU 50! worked carefully you will be amazed!
@magnetized13 күн бұрын
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.
@DATT10 күн бұрын
Oh, so there are examples of this type of tube being used for audio amplification.