EL34 vs 6CA7

Re: EL34 vs 6CA7

6CA7 is the American designation for European EL-34. They are the same tube type, just as 12AX7 and ECC83 are the same tube type. There are different sizes and shapes, but they are essentially the same tube. There will obviously be sonic differences between brands, but they are not different in the way that 6CA7's and 6L6GC's are different.



Cheers..........................wahwah
 
Re: EL34 vs 6CA7

6CA7 is the American designation for European EL-34. They are the same tube type, just as 12AX7 and ECC83 are the same tube type. There are different sizes and shapes, but they are essentially the same tube. There will obviously be sonic differences between brands, but they are not different in the way that 6CA7's and 6L6GC's are different.



Cheers..........................wahwah
Sir Whah, I beg to differ. Actually just had a thread about them 6CA7s are also known as E34Ls not EL34s. I am adapting to them now, dont have the openion yet but I had EL34 before and there is difference, here is mine thread where Rid and Wixedmords concurr on the difference between E34Ls and EL34s. Oh-oh ...
https://forum.seymourduncan.com/showthread.php?t=119118
 
Re: EL34 vs 6CA7

Sir Whah, I beg to differ. Actually just had a thread about them 6CA7s are also known as E34Ls not EL34s. I am adapting to them now, dont have the openion yet but I had EL34 before and there is difference, here is mine thread where Rid and Wixedmords concurr on the difference between E34Ls and EL34s. Oh-oh ...
https://forum.seymourduncan.com/showthread.php?t=119118

Oh no, just when I thought we were going to be forum buddies, you've gone and started an argument. That's it, my formidable ego is bruised and I'm going to have to ask you to read THIS!!! http://www.audiotubes.com/el34.htm

You only need read as far as the part which says "The EL34 and 6CA7 are identical, and most versions have both type numbers on the label."

I'm a stubborn SOB Doc. I am also capable of being LOUD, CONFIDENT AND WRONG.

I look forward to your reply.



Cheers............................wahwah
 
Re: EL34 vs 6CA7

They might be electrically compatible but most tubes these days sold as 6CA7s (e.g., EH and GT) are beam tetrodes as opposed to the pentode design used in most EL34s.
 
Re: EL34 vs 6CA7

They might be electrically compatible but most tubes these days sold as 6CA7s (e.g., EH and GT) are beam tetrodes as opposed to the pentode design used in most EL34s.
take that you whah snob! yeah, pentode this.
 
Re: EL34 vs 6CA7

You meddlin' kids! We've got two different subjects here. What Groove Tubes have decided to call a 6CA7 and what the original 6CA7 was are two different things. Originally, the tube was known universally as a 6CA7/EL34, but along come Groove Tubes and their little empire of stolen Russian and Chinese tubes, and a different design that they now call a 6CA7. So it becomes a question of whether we are going to live in the past, like me, or accept the current state of affairs in the present, like you guys.

Dammit. You're all spies and secret Groove Tubes agents.

I'm going back into my box now.


Cheers.............................wahwah
 
Re: EL34 vs 6CA7

Back when Marshalls first hit the US market, dumb SOB's would wait until Marshall shipped EL-34's, while us smartguys would use a 6CA7 and bias the tubes...

Read up on Gerald Weber's Tube Guitar Amplifier Essentials and he says the same...
 
Re: EL34 vs 6CA7

You meddlin' kids! We've got two different subjects here. What Groove Tubes have decided to call a 6CA7 and what the original 6CA7 was are two different things. Originally, the tube was known universally as a 6CA7/EL34, but along come Groove Tubes and their little empire of stolen Russian and Chinese tubes, and a different design that they now call a 6CA7. So it becomes a question of whether we are going to live in the past, like me, or accept the current state of affairs in the present, like you guys.
I'm no GT fanboi for a variety of reasons that need not be aired here. Personally, I prefer the EH 6CA7 to the GT.

The EH 6CA7 that I like so much is based on the old Philips 6CA7 which was also a tetrode.

Wasn't the GE 6CA7 also a tetrode?

Or are you proposing that an EL34 can be either a pentode or a tetrode?
 
Re: EL34 vs 6CA7

From Wikepedia... http://en.wikipedia.org/wiki/Beam_tetrode

Interestingly, many tubes that are described as pentodes actually turn out to be beam tetrodes. The ubiquitous Mullard EL34 (6CA7) although manufactured by Mullard as a pentode was also produced by many manufacturers around the world, either as a beam tetrode or as a true pentode.


https://www.tubeworld.com/6ca7.htm

http://www.mercasystems.com/s/jj-electronic-el34-6ca7-pentode-p55303485.html

http://www.eierc.com/rc/6CA7.htm

http://www.firebottle.com/ampage/td/vtd6ca7.html

http://www.audiotubes.com/el34.htm




Cheers.............................wahwah
 
Re: EL34 vs 6CA7

Whah,
so are you seriously saying that they are just differently sounding EL34s? Like for example SED EL34s are ? You dont hear more head room, and very different bottom end?
 
Re: EL34 vs 6CA7

Here's the deal as I understand it. Mullard created the EL34 in 1953. This was known as the Type I EL34. In 1959, the Type II EL34 appeared and was sold in the US, re-labelled as 6CA7/EL34, with RCA, GE or Sylvania logos. At this point, all of these tubes were made by Mullard, and so a 6CA7 was just the American JEDEC designation for EL34, officially bestowed around 1960. Then Philips designed the "Fat Boy" American version of a 6CA7, which were then produced by GE and Sylvania. RCA never made a 6CA7 in their own plant. This was a departure from the original Mullard 6CA7/EL34, and was tonally more of the 6L6 family, but at the rated output of 25 watts. The 6CA7's that EH (Sovtek) are making today are based on the Philips design as opposed to the original Mullard. Other manufacturers are making tubes based on the Mullard EL34/6CA7, for example, SED. So essentially, there are two different types of 6CA7, the original which is going to have the sonic attributes of an EL34 because it is an EL34, and the Philips design 6CA7, which will be closer to a 6L6.



Cheers............................wahwah
 
Re: EL34 vs 6CA7

More bass in the EH 6CA7 than in a usual EL34 ; EH 6CA7 is a cross between 6L6 and EL34 , that's why they are SOO good !
 
Re: EL34 vs 6CA7

Generally speaking, how big would the sound difference be?
IME, both the GT and EH 6CA7s have flatter frequency response than most pentode EL34s. They don't have the pronounced upper mid "bark" and perhaps a bit more low-end girth.
 
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