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Little Dot Tube Amps: Vacuum Tube Rolling Guide - Page 656

post #9826 of 9838
Quote:
Originally Posted by NiMo7 View Post
 

There is not a chance It was made like that and I just got two diffrent tubes?

And if It does'nt, there are ways to clean it? Maybe with alcohol or even with a knife? (very carefully of course).

 

Hi again.

 

As gibosi says, a thorough clean (of the black pins) should still have the tube working...but did you buy them NOS from the ebayer I mentioned, or were they used tubes? If used, understandable...but if supposed to be gold-pin for both, not...

post #9827 of 9838
Quote:
Originally Posted by gibosi View Post
 

 

It certainly does appear that you got two different tubes, one with gold pins and the other without. :(

 

However, it is also very likely that they will sound the same. So yes, I suggest you clean the pins. First, mechanically clean the standard pins (not the gold pins!) with a dull knife or sandpaper. And I usually follow that up by using a chemical cleaner. Personally, I have found the purple DeoxIT product works very well on both gold and standard pins.

Thanks, I will try it when I have time. Should the end result be the pins become silver?

 

Quote:
Originally Posted by hypnos1 View Post
 

 

Hi again.

 

As gibosi says, a thorough clean (of the black pins) should still have the tube working...but did you buy them NOS from the ebayer I mentioned, or were they used tubes? If used, understandable...but if supposed to be gold-pin for both, not...

Yes, I bought them from omesa-electronic. Should I contact them? As an international buyer It will take me about 2 weeks to send It back and another 2 weeks to get a new one...

post #9828 of 9838
Quote:
Originally Posted by NiMo7 View Post
 

Thanks, I will try it when I have time. Should the end result be the pins become silver?

 

They are going to look like the pins on an all-glass miniature tube, like a 6AK5 or 12AU7, Not a shiny silver, but more of a dull metallic sheen. 

post #9829 of 9838

So I've used a sandpaper and it looks better:

 

Unfortunately as I said earlier I'm still waiting for the adapers to arrive so I can't see If the tube works and If I hear a diffrence between the two.

Although even If everything will turn out good I'm still quite disappointed about the whole thing..

post #9830 of 9838

Hi NiMo7,

 

Recently I bought two used tubes from a German seller. They were advertised as C3gS tubes, and the picture showed two tubes - only one had the pins visible - gold pins.

 

When the tubes arrived I realized that they were two different tubes, one with gold pins, and one regular silvery pins. In addition, they were not C3gS - just regular C3g.

 

I emailed seller, who said that they were compatible with C3gS, which obviously is misleading and not the same as the specially selected C3gS tubes.

 

Silver lining: Both tubes sound good and sound the same. When they are stuck into their sockets I cannot see the color of the pins, so I pretend they are the same. Since I have a pair of C3gS tubes I know that they sound pretty much the same - don't feel I am missing anything.

 

Unethical and misleading seller - yes, but not worth fighting about in this case since the tubes sound fine. And with a 10,000 hour life span I am not worried about them being used either.

 

?

 

Details about  C3g – 1 Paar Siemens Röhren-Tube-Valve gebraucht gut /used good (=C3gS)

 

 

Caveat Emptor - Buyer Beware

 

The seller had very good feedback - didn't want to send anything negative back so I just didn't give feedback.

 

I am sure that once you get your adapters everything will sound splendid - IMHO I don't think you should worry about it.


Edited by mordy - 8/27/15 at 3:17pm
post #9831 of 9838
Quote:
Originally Posted by mordy View Post
 

 

 

Thanks for the reply , I will wait for the adapters to arrive and then I'll contact the seller If there's something wrong.

post #9832 of 9838
Quote:
Originally Posted by hypnos1 View Post

Hi Trancedoc.

Speaking of tight pin holes, I do hope you bought the C3g adapters that use the silver plated 'roll-jaw' type receptors in the socket, as opposed to the split round ones used in cheaper ones. As you are probably already aware, you must be EXTRA careful when inserting/removing these tubes - their glass bases crack very easily if stressed. Hence you must NEVER 'roll' the tube with a side-to-side movement...always STRAIGHT in or out. Plus making sure the tube stays even all around the base as you do so. The roll-jaw type is far superior, both for safety and pin contact.

You will, I am sure, be very impressed with what these tubes deliver...

ENJOY!...but be careful out there!!

Cheers.
Hi Hypnos,me to I decided to upgrade to the C3g after some months with 6n6p-ir/ei-6hm5, allready bought some adapters for 5687 and 2 pairs Tung Sol and Sylvania 5687,and after that gonna be 6sn7-i try to enjoy the road lol,very short comparative with your work guyz on the Little Dot but im enjoying this!
Can you provide a link with the ''good''adapters for C3g?
post #9833 of 9838

These are the ones that I bought.  They seem to have the "roll jaw" pin holders that bobbyblack described:

 

http://www.ebay.com/itm/2piece-Gold-plated-C3G-TO-6AK5-tube-converter-adapter-/191424601510?hash=item2c91cb9da6

 

I pushed half the point of a needle nose pliers into the pin holes first and the C3Gs went in easy.

post #9834 of 9838
Quote:
Originally Posted by bobbyblack View Post


Hi Hypnos,me to I decided to upgrade to the C3g after some months with 6n6p-ir/ei-6hm5, allready bought some adapters for 5687 and 2 pairs Tung Sol and Sylvania 5687,and after that gonna be 6sn7-i try to enjoy the road lol,very short comparative with your work guyz on the Little Dot but im enjoying this!
Can you provide a link with the ''good''adapters for C3g?

 

Hi b....good choice!

 

Here's the link  :  http://www.ebay.com/itm/2pc-C3G-TO-6AK5-5654-6096-adapter-for-little-dot-MKIII-SE-Headphone-/201366974329?hash=item2ee2682f79

 

If you have the MKIII with the rings, you will probably need the tube 'extenders', unless you remove them as some have done (not easy!). Mind you, the pins on these adapters look quite long and might just make contact without the need for them (I'm sure someone found this, but can't be certain...).

 

ENJOY!

post #9835 of 9838
Thanks Hypnos you are very helpful like always,i know the need for the extenders i dont even think to remove the rings!
I have read all the Elise thread maybe i'm gonna be the next 00.. who knows..biggrin.gif right in time for the best choices of tubes for him:P!
post #9836 of 9838
Quote:
Originally Posted by bobbyblack View Post

Thanks Hypnos you are very helpful like always,i know the need for the extenders i dont even think to remove the rings!
I have read all the Elise thread maybe i'm gonna be the next 00.. who knows..biggrin.gif right in time for the best choices of tubes for him:P!

 

My pleasure, b...and congrats on ploughing through the Elise thread - never thought it would take off quite as much as that!

 

And of course I'm gonna have to tell you to start saving and join the other LD guys who are discovering Elise's charms, lol!!

post #9837 of 9838

To everybody here!! (you know who you are), THANK YOU, THANK YOU for the 6hm5 tip. It's really great when pair with the brightest Grado, the 325e :)

Maybe I should invest on that Muses02 after all.... hmm.

post #9838 of 9838
Quote:
Originally Posted by rovopio View Post
 

To everybody here!! (you know who you are), THANK YOU, THANK YOU for the 6hm5 tip. It's really great when pair with the brightest Grado, the 325e :)

Maybe I should invest on that Muses02 after all.... hmm.

 

Hello rovopio...

 

Glad you discovered the 6MH5 option for the LD amps.

 

The 6HM5's and standard power tubes provide a rich full sound for my LD MK IV, I like it better than some other combinations I have tried. 

 

Not as "3D" as some other options, but the rich deep bass response is worth the reduction in sound stage, in my opinion.

 

Cheers!!

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