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6SN7 Tube Addicts - Page 177

post #2641 of 4150

Yes, they are the coin-based 6SN7GTB, and sound quite similar to the Sylvania GTB's with the "normal" base that have the same plate structure, although I might like the coin-base just a bit better.

post #2642 of 4150

On my second listen, I thought they sounded very similar.  I still prefer a Sylvania from 1949 and 1952, they make music more engaging to listen to because they are more prominent in the middle range.  

post #2643 of 4150

I sold two of the triangular plates (is that the right way to describe them) GTBs and kept a GT with ladder plate structure to myself :D

post #2644 of 4150

B36 MARCONI OSRAM 12SN7 NOS VALVE TUBE 1PC

 

At $149.19, is it overhyped and overpriced?

 

 

f643ff60_B36eBay-Copy.jpeg

 

Happy Yeah, I've got my eye on it...


Edited by Silent One - 8/21/12 at 12:19am
post #2645 of 4150
Thread Starter 

Crazy price!

post #2646 of 4150

Thanks for looking out. Price aside, is it a nice sounding tube?

post #2647 of 4150

I received my bunch of tubes that came with the mouse ears, and very very unfortunately the mouse ear had a crack on the base (those hairline sized ones...)

 

I paid 45+15 shipping for a total of 9 tubes... What should I do? Oh and btw included in the bunch, there's a tall bottle tungsol gtb as well!

post #2648 of 4150
Thread Starter 

Mouse Ears are prone to base cracks.

If the base is tight and the tube tests strong, I would keep them.

 

They'll give lots of listening pleasure, well worth the money.  

post #2649 of 4150
SilentOne, do you an amp that will actually use a 12SN7?
post #2650 of 4150
Quote:
Originally Posted by Skylab View Post

SilentOne, do you an amp that will actually use a 12SN7?

Yes, the 6AS7 based custom built OTL amp by 2359glenn. I have a voltage quadrupler I'm listening to right now before bedtime. I have the Brimar 13D1; Ken Rad 1633, couldn't locate 25SN7 tubes yet. And a voltage doubler to run 12SN7 tubes, like john57 - we've the same OTL amps. Pictured with TSBGRP-VT231; TS5998; USAF-596...will have to take a new pix! tongue_smile.gif

 

900x900px-LL-7cd684fd_DSC_9569800x624-Copy.jpeg

 

 

 

 

Found it! Here's a pix of my 12SN7 > 6SN7 adapter and Russian 5U8C rectifier.

 

de5e5ec6_001rectifier800x392-Copy.jpeg


Edited by Silent One - 8/21/12 at 6:00am
post #2651 of 4150
Quote:
Originally Posted by rosgr63 View Post

Mouse Ears are prone to base cracks.
If the base is tight and the tube tests strong, I would keep them.

They'll give lots of listening pleasure, well worth the money.  

It is more of a dishonest issue with the seller, but given the price i paid i really do not know should i ask for any compensations at all.

Might just ask for a discount on any possible future purchases.
post #2652 of 4150
OK, got it, SO. That's handy, as you can get some nice 12SN7's for much cheaper than their direct 6SN7 counterparts.

But a 12SN7 should be cheaper than that Osram!
post #2653 of 4150

Thanks...was in a shopping mood. rolleyes.gif I missed a quad sale of TS-BGRP 12SN7 'cause I could only afford one. blink.gif Still on the look out for that one, that size. Then I could sell the 6SN7 siblings for extra cash. The Brimar took me by surprise like the calm before the storm - beginning to sound very nice.

post #2654 of 4150
Quote:
Originally Posted by Skylab View Post

OK, got it, SO. That's handy, as you can get some nice 12SN7's for much cheaper than their direct 6SN7 counterparts.
But a 12SN7 should be cheaper than that Osram!


The transformer in the OTL amp is a gorilla Skylab, it can take anything you can throw at it.  A very handy feature we've all been enjoying with Glenn's help.  FWIW I have found the 1633 KenRad to sound identical to the KenRad VT-231 blackglass and you can get them for $4.  biggrin.gif

post #2655 of 4150
Quote:
Originally Posted by mrAdrian View Post

I received my bunch of tubes that came with the mouse ears, and very very unfortunately the mouse ear had a crack on the base (those hairline sized ones...)

 

I paid 45+15 shipping for a total of 9 tubes... What should I do? Oh and btw included in the bunch, there's a tall bottle tungsol gtb as well!


If the glass isn't genuinely loose against the base the tube is still okay Adrian.  The crack won't affecft its performance or lifetime.  I have/had several mouse ear tubes that were like this, it affects a lot of the early 50's tung sol 6SN7s.  If I were you I'd still keep the tube as rosgr63 recommended.

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