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Little Dot Tube Amps: Vacuum Tube Rolling Guide - Page 453

post #6781 of 10502

Tried to find out the life span of a 6AS7 tube - the only information I found was 5000 hours. The 6SN7 octals are supposed to last 10,000 hours.

post #6782 of 10502
Quote:
Originally Posted by mordy View Post
 

Tried to find out the life span of a 6AS7 tube - the only information I found was 5000 hours. The 6SN7 octals are supposed to last 10,000 hours.

Not much infos out there checked the 6AS7 Thread didnt see nothing about it or on the web.Thanks mordy

post #6783 of 10502
Quote:
Originally Posted by i luvmusic 2 View Post
 

Hi Mikelap,

    Did you get a reply from The Chatham Seller?

No not yet ,i saw on the guys site that there was no bundling forget the term ,but you said it was $10.00 for shipping so will see soon enough .

post #6784 of 10502

I bought a pair of 6ZH1P-EV But I got 6ж1n-EB  I can't find where I seen what they was, But I wanted to make sure if they are the same thing. Because the russian letters throw me off. I mainly wanna make sure I got what I paid for.

post #6785 of 10502
Quote:
Originally Posted by genclaymore View Post
 

I bought a pair of 6ZH1P-EV But I got 6ж1n-EB  I can't find where I seen what they was, But I wanted to make sure if they are the same thing. Because the russian letters throw me off. I mainly wanna make sure I got what I paid for.

post #6786 of 10502
Quote:
Originally Posted by MIKELAP View Post
 


Thank's

post #6787 of 10502
Quote:
Originally Posted by i luvmusic 2 View Post
 

Hi Mikelap,

    Did you get a reply from The Chatham Seller?

Got reply just now shipping is $18.00 for 4 tubes looks like shipping charges are fluctuating lol where are you in Canada ! Anyways i got 4 tubes so now im set for life hmm i think i said that before lol.

post #6788 of 10502
Quote:
Originally Posted by i luvmusic 2 View Post
 

That's too bad,is it from the same seller where i got mine?WOW  

 

Hi ilm2. Sorry for the late reply...toooo busy, lol!

 

But no, not your seller....lucky you! What's all the more galling is that another seller charged me just $12...I smell something fishy :angry_face:. Not only that, but I asked for a Tung Sol/Chatham, but got a Tung Sol...no copper posts, and doesn't look half as good - just like a bog-standard RCA in fact. Don't think I'll even bother to pop it in - getting real crotchety in my old age!. Thank God I do at least have a spare pair of the real thing...

post #6789 of 10502
Quote:
Originally Posted by MIKELAP View Post
 
Quote:
Originally Posted by i luvmusic 2 View Post
 

Hi Mikelap,

    Did you get a reply from The Chatham Seller?

Got reply just now shipping is $18.00 for 4 tubes looks like shipping charges are fluctuating lol where are you in Canada ! Anyways i got 4 tubes so now im set for life hmm i think i said that before lol.

Good for you,I'am from GTA So he charged me US$10 for 4 tubes.

post #6790 of 10502
Quote:
Originally Posted by hypnos1 View Post
 
Quote:
Originally Posted by i luvmusic 2 View Post
 

That's too bad,is it from the same seller where i got mine?WOW  

 

Hi ilm2. Sorry for the late reply...toooo busy, lol!

 

But no, not your seller....lucky you! What's all the more galling is that another seller charged me just $12...I smell something fishy :angry_face:. Not only that, but I asked for a Tung Sol/Chatham, but got a Tung Sol...no copper posts, and doesn't look half as good - just like a bog-standard RCA in fact. Don't think I'll even bother to pop it in - getting real crotchety in my old age!. Thank God I do at least have a spare pair of the real thing...

 You're right some of them will charged you arm and a leg.Example i bought 4 6080 from this vendor he charged $16 for the shipping then few weeks later i email him if he have more 6080 he replied Yes then i asked for total amount this time my shipping charge is $26 WHAT:eek:.So you need to watch the shipping cost i usually asked the seller if he can lower the shipping cost and some of them will do that. 

post #6791 of 10502
Quote:
Originally Posted by hypnos1 View Post
 

:angry_face:. Not only that, but I asked for a Tung Sol/Chatham, but got a Tung Sol...no copper posts, and doesn't look half as good - just like a bog-standard RCA in fact. Don't think I'll even bother to pop it in - getting real crotchety in my old age!. Thank God I do at least have a spare pair of the real thing...

 

My current thinking is that of the American manufacturers, only RCA and Chatham manufactured 6AS7's, not Raytheon, not Sylvania, not GE, and not Tung-Sol (before the acquisition of Chatham). Like you, I have seen early (before Chatham) TS tubes that were obviously manufactured by RCA.  

 

I haven't been looking at these tubes all that long, so it is likely that I have't seen every permutation, but so far, my rule of thumb is if it doesn't have copper grid posts, it is not a Chatham. Further, I have yet to see an RCA with copper grid posts. Also, I have yet to see a Chatham with top getters, only two bottom getters. On the other hand, the cleartop RCA's have only one bottom getter, and again, steel grid posts.

 

Of course, there may well be some exceptions, but so far, these observations appear to be true....

post #6792 of 10502
Quote:
Originally Posted by i luvmusic 2 View Post
 

Good for you,I'am from GTA So he charged me US$10 for 4 tubes.

Just for fun i checked with Google Earth and it seems that Montreal is 100 k.m. closer to the guys location than Toronto so when they tell you that they dont play with the shipping prices thats excuse my french  BS i would think. By the way only 5 tubes left  

post #6793 of 10502
Quote:
Originally Posted by gibosi View Post
 

 

My current thinking is that of the American manufacturers, only RCA and Chatham manufactured 6AS7's, not Raytheon, not Sylvania, not GE, and not Tung-Sol (before the acquisition of Chatham). Like you, I have seen early (before Chatham) TS tubes that were obviously manufactured by RCA.  

 

I haven't been looking at these tubes all that long, so it is likely that I have't seen every permutation, but so far, my rule of thumb is if it doesn't have copper grid posts, it is not a Chatham. Further, I have yet to see an RCA with copper grid posts. Also, I have yet to see a Chatham with top getters, only two bottom getters. On the other hand, the cleartop RCA's have only one bottom getter, and again, steel grid posts.

 

Of course, there may well be some exceptions, but so far, these observations appear to be true....


Hi g.

 

You have confirmed my worst fears... that d***ed tube has cost me many times what I paid for my inferior RCAs...just might take it up with the vendor. But  then, is it worth the hassle? Perhaps not... just put it down to experience, lol!

 

I do actually have a Tung Sol Chatham that has copper posts and TOP getter... will post a photo tomorrow... time for bed.

post #6794 of 10502
Hi Everybody!!

I just got my LD mk iv about 6 weeks ago... And found this thread about 3 weeks ago. It is pure gold!!

I'm currently on page 81, and enjoying every nugget!! I can't wait to catch up to page 453, but I'm going to take my time and follow you on your journey with each new tube class.

Thank you all so much, it has been fantastic so far!!!

Best,

Gordon
post #6795 of 10502
Quote:
Originally Posted by MMMan View Post

Hi Everybody!!

I just got my LD mk iv about 6 weeks ago... And found this thread about 3 weeks ago. It is pure gold!!

I'm currently on page 81, and enjoying every nugget!! I can't wait to catch up to page 453, but I'm going to take my time and follow you on your journey with each new tube class.

Thank you all so much, it has been fantastic so far!!!

Best,

Gordon

 

Hi Gordon (MMMan). Welcome to the thread.

 

Congrats on getting what I am sure you will EVENTUALLY(!) discover to be one of the (if not THE) best bargains in headphone amps...assuming you manage to wade through ALL the progress that has been made since page 81, lol! I do hope you manage to hang in there - if so, you will be handsomely rewarded -  guaranteed!

 

I applaud you for doing the proper "leg-work" - not everyone is prepared to put in the time and effort, sadly. In doing so, I am sure you will pick up a great deal of information and advice on many topics besides just pure "tube rolling". And any further info/advice you may need will be willingly given by the marvellous guys on this thread (a thread matched by VERY few for bonhomie, patience, understanding, helpfulness...the list goes on. And, unlike many, there is a refreshing lack of "disdain" for those with more lowly units, and/or those with limited knowledge and experience just starting out on this road).

 

But I do hope you aren't going to be spending the sort of bucks we all have had to in order to reach "nirvana"...skip on the spending until you reach near the end, lol!! Learn from our expenditure...not to mention mistakes!

 

Cheers, and HAPPY ROLLING

 

CJ


Edited by hypnos1 - 7/8/14 at 12:12pm
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