EL34 question

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Olderama
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EL34 question

Post by Olderama »

Hi all

i have a set of 4 Mesa EL34s that seem to be "fatter" than my current ones
What are they?
lol
:mental:

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Re: EL34 question

Post by willow13 »

Fatter tone wise or size wise??
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Re: EL34 question

Post by NippleWrestler »

They're made by jj in Czech republic. They probably sound fatter because they're new.

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Re: EL34 question

Post by Olderama »

THey are a fatter bottle
:mental:

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Re: EL34 question

Post by Molly »

Olderama wrote:THey are a fatter bottle
Ah.. Metric. ;-)

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Re: EL34 question

Post by GrantB »

EL34 come in many sizes, as do most tubes (I have recently been exposed to a 6V6 in EL84 format!). It's what happens inside that differentiates it all.
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Re: EL34 question

Post by Olderama »

Cool

So should be safe to install
:mental:

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Re: EL34 question

Post by sizzlingbadger »

yep
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Re: EL34 question

Post by willow13 »

just make sure you have "pushed" them all the way down :rofl:
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Re: EL34 question

Post by Slowy »

GrantB wrote: I have recently been exposed to a 6V6 in EL84 format!)
Do tell! Do you just mean EL84 size or noval base as well?
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Re: EL34 question

Post by GrantB »

I'm not sure what the code is, but I'll get John Gilmore to explain it better. Proper 6V6 but 9 pin. He's using one in a little frankenamp along with an EL84 from memory.
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Re: EL34 question

Post by Aquila Rossa »

6CA7 is the Yankee term for EL34 and they sometimes have big bottles as they are called. English and German El34s usually don't. Perhaps your tubes are big bottles.

I have a set of big bottle Sylvania ones that have fatter glass. Apparently the lows are tighter on them, but I have not got to try them out enough to know for sure yet.

American big bottle 6CA7:

Image

English EL34:

Image

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Re: EL34 question

Post by Olderama »

Said tubes :)

Image
Image
:mental:

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Re: EL34 question

Post by Aquila Rossa »

p.s. although 6CA7 is the American EL34 and they are interchangable, they are not the same tube design. EL34 is pentode, 6CA7 is beam tetrode.
Last edited by Aquila Rossa on Sat Apr 15, 2017 11:08 pm, edited 1 time in total.

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Re: EL34 question

Post by Aquila Rossa »

Yeah, your tubes are 6CA7

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