The Reference 6SN7 Thread

[Paladin79]

no just to the base.. wires extending out of the glass tube go through the pins and extend a fraction past or just even to the tip. Not all pins are alike. Some are tapered in the tips others are more solid in metal type . Bendix are tough, real tough. Some Russian tubes aren't even true pins, there's a visalble seam along the thin metal pipes as if the metal was folded into a round pin.

Good answer. You can remove the base and pins without affecting vacuum. What can be tricky is getting 60 year old metal clean so it will take solder properly. Extra liquid flux can really help.

 

[bcowen]

Just to clarify here, we're talking about octal base tubes. On a 9-pin noval where the small pin(s) extend into the glass bottle, heating those with a soldering iron could cause the seal between the pin and glass to be compromised and cause a vacuum leak. But there's also no reason to be hitting noval pins with a soldering iron...nothing to solder there.

 

[Paladin79]

Just to clarify here, we're talking about octal base tubes. On a 9-pin noval where the small pin(s) extend into the glass bottle, heating those with a soldering iron could cause the seal between the pin and glass to be compromised and cause a vacuum leak. But there's also no reason to be hitting noval pins with a soldering iron...nothing to solder there.

There are also septar, decal, duodecal, and duodecar bases but yes we were talking about Russian 1578 re-soldering. I have 8 pin power tubes where the pins come straight out of the glass but those are arranged in more of a four-four pattern, not a true octal pattern.

Many of the base numbers come from Latin, another good example is the months of the year, the Roman calendar had ten months therefore the last four come from septem, octo, novem, and decem. 7,8,9 and 10. The loktal or loctal tube base locks in so its name came about differently.

A duodecal tube base is two plus ten so 12.

 

[bcowen]

There are also septar, decal, duodecal, and duodecar bases but yes we were talking about Russian 1578 re-soldering. I have 8 pin power tubes where the pins come straight out of the glass but those are arranged in more of a four-four pattern, not a true octal pattern.

Many of the base numbers come from Latin, another good example is the months of the year, the Roman calendar had ten months therefore the last four come from septem, octo, novem, and decem. 7,8,9 and 10. The loktal or loctal tube base locks in so its name came about differently.

A duodecal tube base is two plus ten so 12.

Now you're making my brain hurt. I was feeling pretty good about counting to 9 without a calculator...

I did, however, match 33.3333333% of the lottery numbers last night. The law of averages suggest my numbers will hit sometime in the next 53,843 years so I'm being patient.

 

[Paladin79]

Now you're making my brain hurt. I was feeling pretty good about counting to 9 without a calculator...

I did, however, match 33.3333333% of the lottery numbers last night. The law of averages suggest my numbers will hit sometime in the next 53,843 years so I'm being patient.

I was trying to go easy on you, I erased my explanation of duodeseptuaginta.

Are you back to buying tubes again? Did you perhaps fall off of the wagon?

 

[bcowen]

I was trying to go easy on you, I erased my explanation of duodeseptuaginta.

Are you back to buying tubes again? Did you perhaps fall off of the wagon?

I can't even spell that duo-whatever-thingie.

And I *may* have been looking at a tube on Ebay and accidentally left the page open and my son inadvertently hit enter on the 'buy it now' when he picked up my laptop or something. I didn't yell at him...I'm sure it was just an unintentional mistake. I'm not a mean Dad after all.

 

[Paladin79]

I can't even spell that duo-whatever-thingie.

And I *may* have been looking at a tube on Ebay and accidentally left the page open and my son inadvertently hit enter on the 'buy it now' when he picked up my laptop or something. I didn't yell at him...I'm sure it was just an unintentional mistake. I'm not a mean Dad after all.

uh huh

I will stick with my previous assumption.

What is the meaning and origin of 'fall off the wagon'? When you 'fall off the wagon', you go back to drinking alcohol in large quantities after having abstained from it for a while. Nowadays, the expression is used to refer to the resumption of any bad activity — drugs, smoking, excessive tube purchases, overeating, etc.May 20, 2013

 

[jonathan c]

I can't even spell that duo-whatever-thingie.

And I *may* have been looking at a tube on Ebay and accidentally left the page open and my son inadvertently hit enter on the 'buy it now' when he picked up my laptop or something. I didn't yell at him...I'm sure it was just an unintentional mistake. I'm not a mean Dad after all.

Was the page one where a quad matched set of four GEC 6AS7Gs were posted at, say, £5000 ?

 

[bcowen]

Was the page one where a quad matched set of four GEC 6AS7Gs were posted at, say, £5000 ?

LOL! Fortunately, no. I might have yelled then.

 

[bcowen]

uh huh



I will stick with my previous assumption.

What is the meaning and origin of 'fall off the wagon'? When you 'fall off the wagon', you go back to drinking alcohol in large quantities after having abstained from it for a while. Nowadays, the expression is used to refer to the resumption of any bad activity — drugs, smoking, excessive tube purchases, overeating, etc.May 20, 2013

Well, that's clearly a picture of falling out of a wagon, not to nitpick or anything. If falling off the wagon refers to resumption of any bad activity, then I'm probably guilty every day. Maybe hourly. Or sooner.

 

[Paladin79]

Well, that's clearly a picture of falling out of a wagon, not to nitpick or anything. If falling off the wagon refers to resumption of any bad activity, then I'm probably guilty every day. Maybe hourly. Or sooner.

Finnegan helped today.

 

[bcowen]

Finnegan helped today.

Finnegan looks mildly dejected that he can't find any tubes to play with...

 

[Paladin79]

Finnegan looks mildly dejected that he can't find any tubes to play with...

Finnegan has been known to break a tube within a minute of me opening a package if I turn my back for a couple seconds. I now have to open them in private and lock them away pretty quickly.

I am listening to some Phil Spector produced music, yeah he died in prison a murderer but at one point in his life he was a huge influence on music, the Wall of Sound.

 

[bcowen]

Finnegan has been known to break a tube within a minute of me opening a package if I turn my back for a couple seconds. I now have to open them in private and lock them away pretty quickly.

Well then you should pull some tubes out of your extensive GE stash and accomplish two things at once: 1) entertain Finnegan, and 2) save the world. Cat owners know that the two are of equal importance.

 

[Paladin79]

Well then you should pull some tubes out of your extensive GE stash and accomplish two things at once: 1) entertain Finnegan, and 2) save the world. Cat owners know that the two are of equal importance.

He likes Fotons but I guess I can introduce him to GE tubes lol.

You are forever responsible for that which you tame, but Finnegan has a ways to go to be tamed.

I am listening to 1966 songs of the year on Tidal, recordings were decent around that time frame while 67 and 68 are much revered as far as great albums.

In my Incubus I have a 63 Melz 1578 and a bottom getter Chatham 6as7g, I can abide.