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redEL34

Fantastic find!(more tubes)

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Posted (edited)

These were priced almost too good to be true on eBay so I couldn’t resist. Both test really close to NOS(just where I like them. Someone-military on the red lettered/white box one- used it just enough to find it useful). Tried both of them, just silent and beautiful sounding. Love it when that happens, lots of noisy ones out there.

bf472e6bf58b65d2c52c685a3ab8280b.thumb.jpg.c7b966c9f961a685f91d8592573b8bf9.jpg

b985e0fb3abbddcb49cb5a75fc27f73d.thumb.jpg.951644311a6408564cf317e0eb4fe887.jpg

Edited by redEL34

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Congratulations. Happy New Tubes Day. :thu: Do you have a specific amp in mind for them?

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Congratulations. Happy New Tubes Day. :thu: Do you have a specific amp in mind for them?

 

Microphone, but these also work great as a phase inverter. I wanted enough old tubes to last a lifetime and I think I`ve achieved that(and then some). They are getting so expensive, and there are just so many bad ones in circulation that I`m amazed both of these are just perfect. I figured if 1 was bad, it`s still a great deal, but they're both awesome! Probably part of the problem is using them in a microphone is a lot different than using them in a radio or TV set. They will test fine, but noise galore. But the perfect one is just silent, especially the old(OLD) military ones. They do not make them like they used to..at all. So I have my cache I did put a REALLY old GE 5 star 12AY7, which is a little less hot than a 12AT7 in the phase inverter of an amp and it just sounds incredible compared to the new JJ tube that was previously in there.

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Microphone' date=' but these also work great as a phase inverter. . . .[/quote']

Okay then what microphone? (I swear, I'll get you nailed down one of these days. Grumble, grumble.) ;)

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I've always played tube amps...so back in the 80s I started collecting tubes...I have a couple of boxes of NOS tubes down in my basement....Mullard, GE, Phillips and others...one of these days I'll start listing them on Ebay.

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I've always played tube amps...so back in the 80s I started collecting tubes...I have a couple of boxes of NOS tubes down in my basement....Mullard' date=' GE, Phillips and others...one of these days I'll start listing them on Ebay.[/quote']

 

Do it, look at how much they are going for. It goes up by the month, get a good tester, though. Amperex or I think Hickock TV7(old military tester) is the tester buyers are looking for. They are not cheap, so weigh what you have vs. buying a good tester. I know they are in the 2k range, but you can be a buyer as well as a seller. Some anecdotal stuff, I have a few primary sellers I buy from. Few test for noise, but that is a bonus, but not always accurate. Also one guy told me he spent like $800 on a crate of surplus military electronics and got $5000 in tubes out of it. The military ones are the best. They are built to last..a LONG time. This is actually right up your alley with the Coleman stuff. I got a fast hard education, and I know what to look for.

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Posted (edited)

Okay then what microphone? (I swear, I'll get you nailed down one of these days. Grumble, grumble.) ;)

 

It`s a DIY ELAM 251 circuit copy. With DIY badass power supply build, quiet and steady as hell.

 

-I missed your post with Hoddys big fat one I guess.

Edited by redEL34

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If you’ve ever seen an old military radio, it’s so overbuilt, but rightfully so. Also over-tubed, unrightfully so. Contracts etc. So it is to our benefit that the military(best) versions of these tubes are still around. And mostly barely used. You don’t want a “new” one. There is a reason it’s still “new”. Slightly used. It was good enough for someone to use it. As you can see in the picture, this is history, military and music. Three things I love.

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If you’ve ever seen an old military radio' date=' it’s so overbuilt, but rightfully so. Also over-tubed, unrightfully so. Contracts etc. So it is to our benefit that the military(best) versions of these tubes are still around. And mostly barely used. You don’t want a “new” one. There is a reason it’s still “new”. Slightly used. It was good enough for someone to use it. As you can see in the picture, this is history, military and music. Three things I love. [/quote']

 

The reason the military needed heavy-duty tubes is because of the need for reliability. Stuff had to work, or people could literally die.

 

When you're mounting tube electronics into things like missiles and jet aircraft, it has to be able to take a lickin' and keep on tickin'... I'd much rather have old MIL-SPEC tubes than new ones, all else being equal.

 

Congrats on the new (old) tubes!

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RedEl34 is right! The deals are great on nos tubes right now, I just ordered 4 RFT 12ax7's for $35 shipped!

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I should probably stock up on a few things... it wouldn't hurt to have a few more really good 6072's and some more EF86's, and some more really good 6V6's and 6L6GC's... I'm pretty well stocked on 12AX7's and 12AT7's ATM.

 

Oh, and I should probably get a backup 6C10 for my Rivera-era Super Champ - those seem to be getting harder to find... and more expensive. :(

 

 

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I bought one of these from Monoprice. 5 watt tweedish clone. Would NOS tubes give it more mojo?

 

6117051.jpg

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I bought one of these from Monoprice. 5 watt tweedish clone. Would NOS tubes give it more mojo?

 

6117051.jpg

 

Maybe a little but modern amps are designed to sound good with new production tubes.

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I bought one of these from Monoprice. 5 watt tweedish clone. Would NOS tubes give it more mojo?

 

6117051.jpg

 

Just out of curiosity, what tubes did it come with?

 

And by that I mean both tube type(s) and brand(s)....

 

 

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Maybe a little but modern amps are designed to sound good with new production tubes.

 

Yes, to a degree... although Chinese tubes (which is what I'm guessing came in erok's amp) are, on average, pretty dreadful IMHO - even compared to other modern tubes.

 

I'd say it's probably more accurate to say that modern amps are designed to work with(in) the limitations of modern tubes, which frequently can't take the higher plate voltages that older amps and tubes often used. YMMV

 

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I bought one of these from Monoprice. 5 watt tweedish clone. Would NOS tubes give it more mojo?

 

6117051.jpg

 

YES

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Just out of curiosity, what tubes did it come with?

 

And by that I mean both tube type(s) and brand(s)....

 

 

12ax7, 6v6gt, of course. No name brand.

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12ax7, 6v6gt, of course. No name brand.

 

Then I have to assume they're probably Chinese tubes.

 

It probably wouldn't hurt to upgrade them. As I said, I'm not a big fan of a lot of MIC tubes, so I'd definitely do it if I was in your position.

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I bought one of these from Monoprice. 5 watt tweedish clone. Would NOS tubes give it more mojo?

 

6117051.jpg

 

What’s the speaker?

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What’s the speaker?

 

Celestion super 8

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The reason the military needed heavy-duty tubes is because of the need for reliability. Stuff had to work, or people could literally die.

 

When you're mounting tube electronics into things like missiles and jet aircraft, it has to be able to take a lickin' and keep on tickin'... I'd much rather have old MIL-SPEC tubes than new ones, all else being equal.

 

Congrats on the new (old) tubes!

 

Yep.

 

And a lot of mil-spec tubes were also radioactive.

 

The largest tube I worked with was a JAN4CX5000.

 

The old RIM 2 Terrier missile literally had to be "warmed up" before it could be fired.

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Posted (edited)

 

Yep.

 

And a lot of mil-spec tubes were also radioactive.

 

The largest tube I worked with was a JAN4CX5000.

 

The old RIM 2 Terrier missile literally had to be "warmed up" before it could be fired.

 

WUT:eek2:?? I have like a LOT of these.

 

There:thu: https://www.sportsmansguide.com/product/index/us-military-surplus-radiation-detector-new?a=110931

 

Edited by redEL34

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Happy NTD !!!!

(In before anyone craps on your thread)

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Yep.

 

And a lot of mil-spec tubes were also radioactive.

 

The largest tube I worked with was a JAN4CX5000.

 

The old RIM 2 Terrier missile literally had to be "warmed up" before it could be fired.

 

Transmitting tube?

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Years ago I bought an old Gibson tube amp 1958 GA6.

 

the tubes were Sylvania but they had been painted black. My amp tech called them war surplus blackout tubes and said they had been used in military field radios, painted so the glow could not be seen at night.

 

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The reason the military needed heavy-duty tubes is because of the need for reliability. Stuff had to work, or people could literally die.

 

When you're mounting tube electronics into things like missiles and jet aircraft, it has to be able to take a lickin' and keep on tickin'... I'd much rather have old MIL-SPEC tubes than new ones, all else being equal.

 

Congrats on the new (old) tubes!

 

Thanks, Phil! I missed that post. You basically got me started on this and now I`m "rolling" them.

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Happy NTD !!!!

(In before anyone craps on your thread)

 

THANK YOU!

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Transmitting tube?

 

He had me scared for a second..wouldn`t the radioactive ones be "put aside" and not sold as surplus? I mean, I bought them from someone who bought them, etc. They ARE the BEST tubes you can buy, period. I should take a picture of this one Sylvania I have that`s just ridiculously overbuilt. Great tube, but wow. Nothing beats a good Raytheon, though. I cannot find a better sounding tube.

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Years ago I bought an old Gibson tube amp 1958 GA6.

 

the tubes were Sylvania but they had been painted black. My amp tech called them war surplus blackout tubes and said they had been used in military field radios, painted so the glow could not be seen at night.

 

That makes sense. Sylvania made the most hardcore tubes I`ve ever seen.I have several, but the military Sylvanias are the best built of all of the brands.

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Yep. HF 10kw.

 

 

Most people look at those kind and say "that's not a tube, where's the glass". :idk:

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Most people look at those kind and say "that's not a tube, where's the glass". :idk:

 

Yeah they use ceramic instead of glass for shielding and other nefarious purposes.

 

Out 500kw LF transmitters had tubes that were 48" long and weighed 50lbs.

 

The sockets and associated circuitry was all solver plated straps, bolts, etc.

 

We didn't maintenance with tools similar to the ones for working on automobiles.

 

 

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12ax7, 6v6gt, of course. No name brand.

 

I wonder if they are using something along the lines of a vintage Champ circuit in those... it probably wouldn't be exact (sounds like you have a solid state rectifier), but I'm guessing the circuits are similar. I may see if I can track down a schematic and take a look...

 

 

 

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I wonder if they are using something along the lines of a vintage Champ circuit in those... it probably wouldn't be exact (sounds like you have a solid state rectifier), but I'm guessing the circuits are similar. I may see if I can track down a schematic and take a look...

 

 

 

Yes, it has a SS rectifier for sure. I like the amp, plenty of chime, but I think it compresses to easy.

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Yeah they use ceramic instead of glass for shielding and other nefarious purposes.

 

Out 500kw LF transmitters had tubes that were 48" long and weighed 50lbs.

 

The sockets and associated circuitry was all solver plated straps, bolts, etc.

 

We didn't maintenance with tools similar to the ones for working on automobiles.

 

 

Biggest thing I've dealt with is FM 5K transmitter and old AM Gates BC-1 that was all tube. Nautel spoiled me with their 1K all solid state AM transmitter. Small market radio is kinda' fun until it isn't. :lol:

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Biggest thing I've dealt with is FM 5K transmitter and old AM Gates BC-1 that was all tube. Nautel spoiled me with their 1K all solid state AM transmitter. Small market radio is kinda' fun until it isn't. :lol:

 

Yeah I think SS work up to a certain wattage, after which tubes take over due to the large voltages involved.

 

I used to use a fluorescent light bulb to check the transmitters & couplers for RF leaks!

 

 

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I bought one of these from Monoprice. 5 watt tweedish clone. Would NOS tubes give it more mojo?

 

6117051.jpg

 

I almost bought one of those before I got out of the last band I was in. My main function was keyboards but I also played guitar and the sound guy was mic-ing my little '59 Gibson Skylark amp. It sounded great but I was always concerned about my little vintage amp getting damaged in transport etc..

 

Does that thing sound pretty good?

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I almost bought one of those before I got out of the last band I was in. My main function was keyboards but I also played guitar and the sound guy was mic-ing my little '59 Gibson Skylark amp. It sounded great but I was always concerned about my little vintage amp getting damaged in transport etc..

 

Does that thing sound pretty good?

 

I haven't tried one yet, but a lot of people really seem to like them. They're super inexpensive by tube amp standards...

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