or Connect
Head-Fi.org › Forums › Equipment Forums › Headphone Amps (full-size) › Little Dot Tube Amps: Vacuum Tube Rolling Guide
New Posts  All Forums:Forum Nav:

Little Dot Tube Amps: Vacuum Tube Rolling Guide - Page 359

post #5371 of 10500
Quote:
Originally Posted by hypnos1 View Post
 

So, MIKE, now YOU'RE trying to tempt me, eh? Shame on you...would you kick a guy when he's down?:devil_face: 

 

ps. Those 6080s could almost tempt me away from the curves!...

 

And just to muddy up the waters a bit more...  

 

As the ECC40s are essentially 6SN7s, these too could be used as output tubes. The very expensive and highly sought-after ECC32, ECC33 and ECC34 differ significantly from the 6SN7, whereas in most cases, the ECC40 is a drop-in replacement, requiring only a different socket. So if you have ever wondered what an Amperex, La Radiotechnique, or Valvo 6SN7 might sound like, roll some Holland-made, French-made or German-made ECC40s and then you will know. :)  

 

Actually, Philips did not acquire the Amperex brand until 1955, and it seems that Holland-made ECC40s never carried the Amperex label. But in the end, I believe it is perfectly acceptable to call Holland-made ECC40 tubes "Amperex."

 

(Apparently, the ECC40 was also manufactured in Britain, but the only one I have seen was manufactured in 1978, and as I tend to avoid tubes manufactured that late in the game, I passed....)

 

A 1952 "Amperex" ECC40 / 6SN7 :)

 

 


Edited by gibosi - 3/14/14 at 1:53pm
post #5372 of 10500
Quote:
Originally Posted by hypnos1 View Post
 

 

So, MIKE, now YOU'RE trying to tempt me, eh? Shame on you...would you kick a guy when he's down?:devil_face: 

 

 

ps. Those 6080s could almost tempt me away from the curves!...

To be honest might pull the trigger on a Woo Audio2 tonight with 6AS7 also 6DJ8 and others man it's not easy decisions decisions!                                                                                                                                      

post #5373 of 10500
Quote:
Originally Posted by MIKELAP View Post
 

To be honest might pull the trigger on a Woo Audio2 tonight with 6AS7 also 6DJ8 and others man it's not easy decisions decisions!                                                                                                                                      

 

Now it's MY turn to play the tempter...go for it MIKELAP, and let us know how it compares!

 

GOOD LUCK :wink_face:

post #5374 of 10500
Quote:
Originally Posted by gibosi View Post
 

 

And just to muddy up the waters a bit more...  

 

As the ECC40s are essentially 6SN7s, these too could be used as output tubes. The very expensive and highly sought-after ECC32, ECC33 and ECC34 differ significantly from the 6SN7, whereas in most cases, the ECC40 is a drop-in replacement, requiring only a different socket. So if you have ever wondered what an Amperex, La Radiotechnique, or Valvo 6SN7 might sound like, roll some Holland-made, French-made or German-made ECC40s and then you will know. :)  

 

Actually, Philips did not acquire the Amperex brand until 1955, and it seems that Holland-made ECC40s never carried the Amperex label. But in the end, I believe it is perfectly acceptable to call Holland-made ECC40 tubes "Amperex."

 

(Apparently, the ECC40 was also manufactured in Britain, but the only one I have seen was manufactured in 1978, and as I tend to avoid tubes manufactured that late in the game, I passed....)

 

A 1952 "Amperex" ECC40 / 6SN7 :)

 

 

 

Hi gibosi.

 

Yes indeed...once again SO many tubes to try, so little time (not to mention money!). These ECC40s certainly sound interesting - something for MY backburner, methinks!

 

Cheers (and good night!)

post #5375 of 10500
Quote:
Originally Posted by TrollDragon View Post
 


Yes it will, for best results rough up the plastic and copper with some coarse sandpaper before using JB Weld, it helps the epoxy to stick better.

THANK YOU!

post #5376 of 10500

What is the difference between an 6FQ7/6CG7 tube and the ECC40? As I understand it the 6FQ7/6CG7 tube was a replacement for the 6SN7 in a smaller envelope.

post #5377 of 10500
Quote:
Originally Posted by gibosi View Post

 

Actually, Philips did not acquire the Amperex brand until 1955, and it seems that Holland-made ECC40s never carried the Amperex label. But in the end, I believe it is perfectly acceptable to call Holland-made ECC40 tubes "Amperex."

 

Personally I think that one shouldn't. It would be accurate to call something Amperex if that something was made by Amperex or branded by Amperex. A tube branded Philips Miniwatt made by Philips in a Dutch Philips factory has zero connection to Amperex. I admit that this is a pet peeve of mine.

post #5378 of 10500
Quote:
Originally Posted by Oskari View Post
 

 

Personally I think that one shouldn't. It would be accurate to call something Amperex if that something was made by Amperex or branded by Amperex. A tube branded Philips Miniwatt made by Philips in a Dutch Philips factory has zero connection to Amperex. I admit that this is a pet peeve of mine.

 

And I accept this. :)

 

Personally, I am far more focused on factory than on brand. And therefore, in my mind for example, Amperex labeled ECC88s made in England's Blackburn factory are "Amperex" in name only. Further, to call them "Amperex" is downright confusing. Again, my focus is on the factory. But I often find it helpful, when talking to others who are more focused on brand, to refer to Holland-made Philip's tubes as Amperex, even though it is not technically correct.

 

So of course the picture of the Philips Miniwatt ECC40 I posted above is not really an Amperex. But calling it such can be helpful to those who don't understand just how complex and convoluted the Philips manufacturing conglomerate actually was.

 

Cheers. :)

post #5379 of 10500
Quote:
Originally Posted by mordy View Post
 

What is the difference between an 6FQ7/6CG7 tube and the ECC40? As I understand it the 6FQ7/6CG7 tube was a replacement for the 6SN7 in a smaller envelope.

 

To my knowledge, the primary difference is that Philips never made 6SN7s, 6FQ7s or 6CG7s. And American manufacturers never made ECC40s. In terms of use and function, they are essentially the same tube. Technically, the 6FQ7/6CG7 are 9-pin miniature (B9A base) tubes and the ECC40 are 8-pin (Rimlock) miniatures (B8A base). So again, the same tube, different bases. And therefore, the only reason to try ECC40s is if you want to experience 6SN7s with a Philips flavor. :)

post #5380 of 10500
Quote:
Originally Posted by gibosi View Post

 

And I accept this. :)

 

Personally, I am far more focused on factory than on brand. And therefore, in my mind for example, Amperex labeled ECC88s made in England's Blackburn factory are "Amperex" in name only. Further, to call them "Amperex" is downright confusing. Again, my focus is on the factory. But I often find it helpful, when talking to others who are more focused on brand, to refer to Holland-made Philip's tubes as Amperex, even though it is not technically correct.

 

So of course the picture of the Philips Miniwatt ECC40 I posted above is not really an Amperex. But calling it such can be helpful to those who don't understand just how complex and convoluted the Philips manufacturing conglomerate actually was.

 

Cheers. :)

 

I agree on all points but wish to note that we should strive to educate rather than perpetuate the "lie". ;)

post #5381 of 10500
Quote:
Originally Posted by mordy View Post
 

What is the difference between an 6FQ7/6CG7 tube and the ECC40? As I understand it the 6FQ7/6CG7 tube was a replacement for the 6SN7 in a smaller envelope.

 

You could see them as slightly different answers to the same question, i.e., miniaturization.

 

Quote:
Originally Posted by gibosi View Post

 

To my knowledge, the primary difference is that Philips never made 6SN7s, 6FQ7s or 6CG7s.

 

Philips did make 6SN7GTs; Mullard did not, they had their ECC3Xs.

post #5382 of 10500
Quote:
Originally Posted by Oskari View Post
 

Philips did make 6SN7GTs; Mullard did not, they had their ECC3Xs.

 

Obviously, I still have much to learn. :)

 

In the past, whenever I saw a Philips-branded 6SN7GT. I just assumed that it was an American rebrand, I often see Brimars, but as this company was created to manufacture American tubes for the British market (British Manufactured American Radio), this is to be expected, and I don't think Brimar was part of Philips? While I certainly don't see them very often, I will definitely spend a little more time checking out any Philips 6SN7s I see in the future.

post #5383 of 10500
Quote:
Originally Posted by gibosi View Post
 

I don't think Brimar was part of Philips?

 

It wasn't. It was part of STC until sold to Thorn in 1960. Thorn then merged their tube interests with those of AEI in 1961.

 

While I certainly don't see them very often, I will definitely spend a little more time checking out any Philips 6SN7s I see in the future.

 

You'll find out that, in addition to Philips, many were made by MBLE in Brussels.

post #5384 of 10500

Found and purchased a Sylvania (DELCO brand) metal base 6NS7W for peanuts, as the base had completely split and come loose. Notice that it looks similar to the much later coin-base 6SN7s. This suggests to me that when removing these tubes from their sockets, it is perhaps best to grab them by the black phenolic bottom rather than the metal wrapping.

 

 

I figure that this shouldn't be all that hard to repair. The original brown mastic is rather thick so I think this calls for a very thin glue. I have read that clear nail polish works well for resecuring phenolic bases, but maybe a couple drops of superglue would do the trick. Any suggestions?

 

 

But in the meantime, a simple twist tie works very well and it has the added benefit of fitting in with the "flying wire" aesthetic of my current rig. And it sounds great! :)

 

post #5385 of 10500
I would leave the metal off myself, adds a unique flavor to the tube. smily_headphones1.gif
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Headphone Amps (full-size)
Head-Fi.org › Forums › Equipment Forums › Headphone Amps (full-size) › Little Dot Tube Amps: Vacuum Tube Rolling Guide