help me identify this tube (RCA EL34/6CA7 made in UK)

How can you get a great tone without a good understanding of what makes your amp tick? — EL34, EL84, 6L6, KT66, KT88, 12AX7, 12AT7, 12AU7, EF86, Output Transformers, Power Transformers, Capacitors, Resistors and everything else that it takes to make a tube amp sing!

help me identify this tube (RCA EL34/6CA7 made in UK)

Postby AntoAmpeg on Sun Mar 19, 2017 5:15 pm

thanks for any info about this tube, I dont remember when e where I bought it.
It doesnt seem a mullard but theres written made in Great britain, thanks for any clarification about it
Image
Image
in loudspeakers we trust
AntoAmpeg
Squire
 
Posts: 527
Joined: Thu Mar 30, 2006 2:30 pm
Location: Florence

Re: help me identify this tube (RCA EL34/6CA7 made in UK)

Postby pdf64 on Sun Mar 19, 2017 7:05 pm

Using strong light and visual magnification, have a looky for any characters etched in the glass envelope, particularly near the base.
My RCA branded 'Made in Great Britain' EL34 have XF2 89D4.
I think that means they should sound good, which they do.
My band:-http://www.youtube.com/user/RedwingBand
pdf64
Knight
 
Posts: 1242
Joined: Thu Dec 14, 2006 9:55 am
Location: Staffordshire UK

Re: help me identify this tube (RCA EL34/6CA7 made in UK)

Postby OldSchoolDave on Sun Mar 19, 2017 8:03 pm

I recall a thread awhile back about some tubes imported from embargoed (i.e. former Soviet blok) countries being labeled as made in Britain to pass through Customs.

Others here are better equipped to tell whether or not this applies to the tube in question. RCA did indeed re-label some Mullard tubes.

Dave
...Hey! I played that song when it was new...
.
http://www.OldSchoolDave.com
OldSchoolDave
Prince
 
Posts: 4188
Joined: Sat Apr 29, 2006 9:46 pm
Location: HP, NC USA

Re: help me identify this tube (RCA EL34/6CA7 made in UK)

Postby Gooch on Sun Mar 19, 2017 9:47 pm

Looks like a Japanese Matsushita to me.
Dying ain't much of a living.
Gooch
Baron
 
Posts: 2513
Joined: Sat Jun 16, 2001 7:01 am
Location: Austin TX

Re: help me identify this tube (RCA EL34/6CA7 made in UK)

Postby AntoAmpeg on Mon Mar 20, 2017 6:10 pm

Ive done my reasearches and Ive found these are Brimar SCT made (UK) EL34... someone knows how Brimar SCT EL34 sound compared to mullards?
in loudspeakers we trust
AntoAmpeg
Squire
 
Posts: 527
Joined: Thu Mar 30, 2006 2:30 pm
Location: Florence

Re: help me identify this tube (RCA EL34/6CA7 made in UK)

Postby OldSchoolDave on Mon Mar 20, 2017 10:35 pm

AntoAmpeg wrote:someone knows how Brimar SCT EL34 sound compared to mullards?


I once owned a Hiwatt DR504 that was fully loaded with Brimars. Never did an A/B comparison to Mullards, but it was a great sounding amp.

Dave
...Hey! I played that song when it was new...
.
http://www.OldSchoolDave.com
OldSchoolDave
Prince
 
Posts: 4188
Joined: Sat Apr 29, 2006 9:46 pm
Location: HP, NC USA

Re: help me identify this tube (RCA EL34/6CA7 made in UK)

Postby AntoAmpeg on Tue Mar 21, 2017 8:15 pm

thanks,
Ive found that also Pinnacle EL34 was the same
in loudspeakers we trust
AntoAmpeg
Squire
 
Posts: 527
Joined: Thu Mar 30, 2006 2:30 pm
Location: Florence

Re: help me identify this tube (RCA EL34/6CA7 made in UK)

Postby Lyre-crunch on Sun Apr 02, 2017 5:18 pm

My hunch is they are Matsushita. Brimar (STC) most probably never made an EL34, they rebranded Mullards and other makers. (But Brimar did make their own EL84 and ECC83.)
Lyre-crunch
Page
 
Posts: 441
Joined: Sat Sep 10, 2005 7:27 pm
Location: Finland

Re: help me identify this tube (RCA EL34/6CA7 made in UK)

Postby AntoAmpeg on Sun Apr 02, 2017 7:03 pm

thanks for chiming in, they look 99% same but dont usually Matsushita have a "made in japan" lettering? mine have "made in uk", these tubes really puzzle me. I just found another almost identical one on eBay:
http://www.ebay.com/itm/371431635707?ul_noapp=true
in loudspeakers we trust
AntoAmpeg
Squire
 
Posts: 527
Joined: Thu Mar 30, 2006 2:30 pm
Location: Florence

Re: help me identify this tube (RCA EL34/6CA7 made in UK)

Postby Lyre-crunch on Tue Apr 04, 2017 8:06 am

Yes, usually the country of origin is correct, but very often tube manufacturers (brands) pre 1980's would print whatever they wanted on the tubes. The only thing you can trust is how the tube is constructed and etched codes if there are any. European manufacturers under the Philips brand had very similar construction, but in their case the tubes have codes to identify the correct origin. In this case if the construction, glass and base look like Matsushita, then that's what it is.
Lyre-crunch
Page
 
Posts: 441
Joined: Sat Sep 10, 2005 7:27 pm
Location: Finland


Return to Tubes, Transformers and Components

Who is online

Users browsing this forum: No registered users and 0 guests