What will you do when NOS tubes run out?

faster100

I don't need to ask again, Ive asked him when i had the ELP.. asked Russman who comfirmed it and this is the first ive heard its not a compatable for the 6dj8/6922 varient.. I guess several good sources could be wrong, lord knows a 50 year old book couldn't be wrong with current production equipment

BlueMDPicker

A good read for basic info, your impressions may vary substantially.

W WALDECKER

BlueMDPicker wrote:

A good read for basic info, your impressions may vary substantially.

i already have that link stored in my favorites. i wonder if there are any white papers adressing compatability in the 6DJ8 tube family? thanks....WCW III

RuSsMaN

The 7308 is a 6DJ8 just like the 6922 is a 6DJ8, it is a direct replacement in ANY 6DJ8 circuit.

dorokusai

As I stated previously, go with your own knowledge source, but you won't find them in my collection.

Mike - Nice link.

Faster - Are you using a 50 year old book? That would be silly.

faster100

Nope, I use known good sources.. or atleast id like to think they are good.
Russman, Gary Dodd, and yes internet info.. I'm pretty sure not many here know first hand about tubes, IE: when they came out.. and many of us didn't use tubes till recent years.. and you all got your info from somewhere, be it online, a friend or a book.. I'm no expert by far, however i do alot of reading and picking brains to find out what i know.. which is enough to take care of my needs.. No need to be a total expert, the Internet does me well enough

RuSsMaN

Back on track, I'm not worried about NOS running out, I've got pretty much all I need, plus there is still a TON of great stuff being made.

I think the toob noobs get too wrapped up in rolling sometimes, and forget about the peice of gear and the circuit the tubes are installed in. Tubes should be icing, on an already delicious cake - they won't make or break something built right. A well engineered tube component is just that.

$500 tubes in a $500 peice? Silly, in my opinion. You'd get more audio mileage out of having $200 worth of mods done to that $500 peice, throw in some affordable current production, or less expensive and easy to source NOS (mil-spec, etc), and have lots of coin left over for other things in the audio chain.

Cheers,
Russ

fredv

W WALDECKER wrote:

i already have that link stored in my favorites. i wonder if there are any white papers adressing compatability in the 6DJ8 tube family? thanks....WCW III

I came across this link recently, not sure you saw it not not:
http://home.att.net/~chimeraone/6dj8sound.html

RuSsMaN

Dennis is our audio group (Dallas Audio Club), and good friend of mine, he talks, I listen. You want to talk about someone who has forgotten about more tube gear, than anyone will ever know.

Dennis Gardner

I think Russ hit on a common issue with some of the new tube gear on the market. The "iron" that the circuits are built around are simply ****. The transformers are what made some of the '50s-'60s Mac, Marantz, Fisher, even Dynaco such great platforms to work from. Tweaking those models with different tubes was a great place to start. Alot of the Chinese stuff on the market today are trying to get around this fact with slick wiring schemes and lots of chrome, cosmetic covers over tiny power transformers, etc.

I'm not saying that it is all crap, just in agreement that rolling high $$$ tubes into some of the poor designs today only changes a **** sound to a less **** sound.

organ

6DJ8, 6922 and 7308 are all in the same family.

7308 are premium 6922.

The only time you'll have any issues is running a 6DJ8 in a pre amp designed for 6922. The 6922 have slightly higher current than 6DJ8. It would burn out the tube pretty fast.

W WALDECKER

Dennis Gardner wrote:

I think Russ hit on a common issue with some of the new tube gear on the market. The "iron" that the circuits are built around are simply ****. The transformers are what made some of the '50s-'60s Mac, Marantz, Fisher, even Dynaco such great platforms to work from. Tweaking those models with different tubes was a great place to start. Alot of the Chinese stuff on the market today are trying to get around this fact with slick wiring schemes and lots of chrome, cosmetic covers over tiny power transformers, etc.

I'm not saying that it is all crap, just in agreement that rolling high $$$ tubes into some of the poor designs today only changes a **** sound to a less **** sound.

i was running a matched and balanced Quad of JAN Philips 6922s in the Anthem Pre 1L and it sounded very good. i wanted to try some Amperex tubes because i wanted to find out what all the fuss was about. was there a dramatic improvement after installing the Amperex 7308s and letting them burn in? you bet your sweet **** there was! the deal was that in the event that i did not care for them the guy that i am buying the tubes from would let me return them and try something else. i dont know about anyone else but this option gave me the green light to try a Quad at no risk to my wallet, so i went for it and i am sure glad that i did. i dont know if the earler comments were directed at me or not but here i go ,as far as being new to the tube scene, so What ?i am a 43 year old blue collar pipefitter/ mechanical forman with an above average IQ and i have been involved with the Audio scene since i was 13 years old and i do know a little bit about it .i seek advice and i sometimes listen to suggestions. at the end of the day i am perfectly capable of making the final decisions about what direction i will take in this hobby of ours. as for the veiled and condecending comments leveled at CP members who happen to be new to the tube scene from certain more tube savy senior members of club Polk i feel that it serves no other useful pupose except to further inflate thier already over inflated egos and if the shoe fits wear it ! thanks....WCW III

BlueMDPicker

organ wrote:

The only time you'll have any issues is running a 6DJ8 in a pre amp designed for 6922. The 6922 have slightly higher current than 6DJ8. It would burn out the tube pretty fast.

Bingo! That's the most important consideration when using tubes, other than "preferred substitutes", if a circuit was designed for the higher operating limits of military spec and TV tubes.

There are a couple of schools of thought. Some think a tube sounds "best" when not operated near its design limits, while others think a tube sounds "best" when operated quite near its design limits. Who's right? Your ear on your gear, of course.

William - relax. I don't believe anything here was directed at you personally. This is a public forum, and the opinions/advice may be read and absorbed by many others who don't comment (and who have not invested the time you have in researching your interests in the hobby.)

Dennis Gardner

Hey William, the gear you run can hardly be considered low end to most of us here. I haven't went the high $$$ tube route for any of my gear simply for one reason: I still see more benefit for the $$$ in my system in other places, Once I have some of my gear in place longer, I may go NOS. The differences I've seen in some of the 12AX7 tubes I have rolled in haven't been a pleasant experience. I just don't care for veiled and muddy. I have tried EI, EH, Sovtek LPS and JJ tesla and ECC83. All new versions of course,

Russ' comment is made in the same vein as a $2K set of wheels on that primer grey $500 car. Somehow, sumpin' just ain't right.

BobMcG

Wouldn't effect me a whole lot I suppose. Only owning two tube devices at the moment and not being a big tube roller at the moment either, (times could change) I'm happy with the newer stuff out there. As the next ten years pass by and some more of the older NOS stuff dries up...........




well, my ears will be ten years older. And not getting any better.