Overloaded EL34

[Artcurus]

THeXXXDB, today's equipment is complete crap. If you are truly versed in Hi Fi, you would know this already. I can cover 1200 screaming Elementary kids at a dance with a pair of Western Electric 65 watt tube amps and a pair of Peavey SP2. Don't tell me tubes are crap, SS could not even come close to this, with the exception of maybe early 1980's to mid 1970's SS amps.

[defransekraai]

thun shi hni oh at 00.12

[oldboatclub]

Good way to wipe out the OT

[YouGoshaTube]

Дебилизм

[19GN03]

That guy THeXXXDB is complete wrong, look at a scope and compare a tube with a mosfet Ampli, you would be supprised about the Mosfet produces, Iam 52 year old.

An other advance with tubes, wen they are defect, plugin a new one, you have to go to the a shop to let it repair, two weeks later hopefully you get it back, en deminisched the valeue because het has been soldered in haha.

Long live the tube, for big power they still need them. !

[TheXXXDB]

outdated 85 year old technology.......some of the new stuff thats is comming out is as good at 1/5 the price...i know all the stupid arguments about tubes...SPARE me i have been playing since i was 6...and i am 43...lke i said outdated....the only people who are still obsessed with tubes is hand radio monkeys and kids that dont know better about music and only repeat what they hear...

[bugietube]

Pretty much proves that the human race never walked on the moon.

[doctornerve]

Magnificent

[GuitarRazze]

''vittu'' sieltä kuuluu :D

[unibrow9]

why did you put a cup over it?

[sawyerandjackfucking]

That was wonderful! What a GLOW! Thanks for sacrificing a PRECIOUS and RARE tube such as the EL34! (*poking fun at all the people acting like it's a huge deal*)

Cheers!

[ubuntupokemoninc]

you dick

[AlvisLiquid]

Noniin, se on siinä.

[Hemingray]

Ah, a little redplating there. Very nice.

[ubuntupokemoninc]

WTF!!!!

[23565120]

POINTLESS STUPIDITY. I shall report this to Dogbert! :-(

[TheKevinChannel1]

More powa!!!!!

[udinbata]

Well...I think Karhu is much better than Lapin kulta.. :P

[wa2ise]

There's starving audiophiles in the third world....

[guiltengine85]

@wa2ise Someone should beat them to death with a $300 wooden volume knob.

[trastornofym]

blue light is the tube's soul hahaha

[luigiperso]

and the fucking point was ?

[florickwar2]

it was worn out but it could me made to test stronger .. if you wouldn't have blew it up i bet it would have .

its normal procedure to awake tubes afther storage by running the heater +20% voltage for a hour or so . this restores the emissive coating .

[jformaldehydem]

Did you travel back in time?

[basspig]

I once had a sweep tube breech the anode with a high intensity electron beam, then melt the glass envelope until the air pressure pushed it in and made a hole in the envelope, at which point the tube failed utterly. I still have the tube after 35 years, as a souvenir.

[RetroCaptain]

Good day,

Yes, I know there was a company that restored.(CRT's & the really early "Edison-era" radio tubes, cause not made anymore...the process is the same for later models.

It's that the cathodes "foul up". They are opened up, new cathodes& filaments put in, grids/plates cleaned, & re-weld the glass cover, pump the vacuum back, and you are ready for business again. I know it's tricky work!

It's not too unlike rebuilding an auto engine.

Only some parts wear out..just replace them, and re-use!

[Nivicoman]

@RetroCaptain I agree with what you said with rebuilding an auto engine just replace the worn parts re-use all else. Rubber drive wheels for phonographs same thing strip off old rubber and put new. Motors get new bearings potentiometers disassembled and cleaned old paper caps get new modern polyester caps hidden inside. Anything can be restored. Neon signage tubing gets restored too. Open them up, replace the cathode shells, repump, bombard and refill with new neon or argon/mercury and resealed.

[TheTyrantRaptor]

That was painful to watch, cause thats happened all too often for me....

[GuitarRazze]

Lapin kulta lasi siin päällä :P

[hrhlordwurlibird]

The Velleman K4040 was good at that. It pushed the EL34 to its limit. I replaced the EL34's with KT88s and modded the bias. 18 months on - no tubes going Chernobyl...

[spiderman2k5r]

hah cool..i bet u were bored as hell

[MrJonesyfried]

OUCH!!!



[petossido]

povera valvola.. se ne avessi una la tratterei come una regina!

[KC5CQW]

This reminds me of putting old scratched up CD's in the microwave...

[SKATEPL7]

Debilizm psuć taką zawalistą lampę

[RadioAnarchia]

@SKATEPL7

A nick nie wskazuje na miłośnika lamp. Mimo wszystko, jeśli lampa ma małą emisję (dyskwalifikującą ją z normalnej eksploatacji) można zrobić 3 rzeczy:

A) wyrzucić i zapomnieć

B) zostawić do kolekcji (chyba że to jakaś cholernie popularna lampa)

C) zabawić się

[SKATEPL7]

@RadioAnarchia 

Ale i tak szkoda tej lampki

[phobet]

Where's the kaboom?? There was supposed to be an earth-shattering kaboom!! ;-)

[reverendjetstream]

did she... died?

[TheNcube]

Was that a Mullard? I was like cringing towards the end. What a way to die!

[RODALCO2007]

Nice video. Now it gives me the idea how an overloaded tube looks like when the output transformer fails in a tube amplifier.

May as well have some fun out a worn out tube before it is discarded.

[petchharrison]

thank heavens the cathode fused before you did..jeff..M6glh

[paul9511]

it lights

[jakeeinziger]

Nice demo. Now people know what a red plating tube looks like!

[Nivicoman]

@jakeeinziger And if caught in time can be saved. A transistor or IC under overload/incorrect bias-instant loss of magic smoke!

[clairetaylor123]

nice demo

[laurdy]

this is what can happen when the audio coupling capacitor on the control grid goes short circuit

[RetroCaptain]

Good Day,

...possible to track the demise of old-tech (essentially the 6CA7 is ancient form of output "IC"). but todays version, would be "fritzed" in nanoseconds, eh.

There used to be a company here that would rebuild old radio valves.. (like 1920's pieces). I wonder if anyone is aware this ability exists. ...meaning repair existing decently produced originals,..not replace with cheap qual. new 1's from overseas.

[Nivicoman]

@RetroCaptain I agree solid state will blow in nanoseconds a little too much current and PN junctions melt the boundry layer and turn into a dead short. As far as rebuilding radio valves I didn't know there were companies doing that but I did see where someone received an ancient light bulb and the evacuating tip was broken losing the vacuum. He repumped it and sealed off the tip and it worked.

[natn0]

did you raise the heater voltage or lower the grid voltage?

[tonskulus]

@natn0

lowered grid bias. 1kHz test signal and dummy load was used (it is tube amplifier).

[syoun14]

@natn0 it's actually a DSL100, all he did was turn the volume to 4. 8D

[michi42]

i think its great for educational purpose ^^

if you can see it on youtube, fewer people have to try it out themselves. C'mon everyone secretly wanted to see this !!

[RockaRollaZombie]

@michi42 Yeah, on a 6L6...

[CursedheartMiki]

@michi42 I agree with you , i just wanted to see how it look when tube blows..... one tube blown , but so many people now know how it looks like. Its only tube not a Human .

[buddhafollower]

@michi42 no, i do not

[rugheadrohit]

Bloody hell.. that was an EL34.. Why in the world would you sizzle that out???? gosh

[tonskulus]

@rugheadrohit

That tube was worn out!!!!!!!!

[beeroosterm]

@tonskulus Ohhhhhh....It breaks my heart just to see that rube, burning out a perfectly useable tube. Burn it out, slather it up with lube, now jam it straight up your alimentary tube.

[Polybun]

@rugheadrohit why not, el34's are in production and cheap as chips. I blow up a pair every other month in my Marshall.

[Rikk303]

@rugheadrohit It looked knackered to start with. Wasn't like killing a kitten you know. Kittens and 34s are readily available at all times. Just check your local Mewsic shop

[rugheadrohit]

@Rikk303 well.. Really?

Trust me.. EL34's in India are quite a pain to find.. and cost a Bomb~ thats why i was a bit shocked..

[phattadatta]

I Agree with erjohnson227 thats not cool!

[MagicKaputt]

maybe you want to try this with AD1 or EM35? :-(

[matmax426]

next time put your hed in the tesla coil and get this video to You tube, will be more interesting

[tonskulus]

@rockersrac

There is nothing wrong burning out old and weary tube, it was totally useless already.

[daviewavie112]

@tonskulus i guess u just put it out of its misery

[Aragorn266]

Nice lightbulb u got there!

[Stavr071]

Ппц любители лампы гробить блин...

[Linqua2112]

why would you ever do such a thing to a precious tube! especially el34?!

[tonskulus]

@Linqua2112

That tube was worn out. I would never do that for brand new tubes!

[IFUCKINHATEY0UTUBE]

@tonskulus Ignore them, people on youtube think they know everything found this very interesting first time I watched a tube die. You know since they last so long my dad's radio when growing up never needed new tubes. XD

[Chewytube1]

Nice overclocking :P

[soverign60]

Though it may be fun to watch a power tube melt - it isn't very smart to do. Unless, of course you don't care about the amp either. It's a good way to cook a transformer, or at least a screen resistor.

[jshorva65]

@soverign60 I have to concur here! The possibility of causing severe damage to the amp's output transformer, potentially leading to future catastrophic transformer failure, represents too great a risk for such "experiments" to EVER be worthwhile! Not only the tube plates, but the copper windings of the transformer as well, are subjected to overheating. Breakdown of their enamal insulation, or reduction of its dielectric strength leading to future arc-over and shorted turns, is VERY likely.

[formatdyskuc]

I do similar things to tubes with shitty (50% or even less) emission. They can't be normally used, but the're obviously ideal for such experiments. Today I did that to PCL86. Glass partially melted and tube lost vacuum :-)

[odeioinsetos]

R.I.P. EL34

[erjohnson227]

lol. RIP

[pawel1201]

sZkoda lampy

[dtiydr]

Jees, white hot :D

[kernythelibretter]

niceee :D

[laurdy]

why dont you try and melt the metal inside using your induction heater

[scopeboyr00lz]

What did this poor EL34 do to deserve that? :O

[tonskulus]

it had low emission. Old and tired tube.

[laurdy]

when one of my valves goes bad it gets microwaved

[erjohnson227]

So then, that would be the equivalent of torturing old people? You horrible person :P

[laurdy]

What were those blue flashes at the end?

[tonskulus]

Its just some arcing beetween electrodes.

[Kizmox]

Nice blast shield :D