EL 84 Edicron UK vs JJ - diyAudio
Go Back   Home > Forums > Amplifiers > Tubes / Valves

Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 26th November 2006, 05:54 PM   #1
kaybee is offline kaybee  Canary Islands
diyAudio Member
 
Join Date: Nov 2006
Default EL 84 Edicron UK vs JJ

This is my personal Observation only.

having tried EL 84 output tubes in
a simple SET amplifier for many weeks now,
and tried exchanging between
Edicron UK brand tubes vs
the commonly available JJ tubes all over usa.

the JJ tubes seem cloudy, foggy, compressed
and incomplete and slow in comparison.

Edicron EL 84 tubes are Faster, Clearer,
more Dynamic and great follow through...

both tubes require At Least 50 hrs burn in
to be able to sing their true sounds...

Pls ask ur dealers to start carrying
Edicron as one more option. these are not
expensive, and like JJ,
have ongoing production today.

be good

k
  Reply With Quote
Old 28th November 2006, 04:30 AM   #2
kevinkr is offline kevinkr  United States
diyAudio Moderator
 
kevinkr's Avatar
 
Join Date: Sep 2004
Location: Boston, Massachusetts
Blog Entries: 6
As far as I am aware Edicron is just a reseller/relabeler, they have no manufacturing facility I am aware of. I suspect a lot of these tubes are simply rebranded Chinese types of various manufacture. (Some of their tubes look a lot like current Shuguang types.) Based on experience with some other similar vendors here and abroad it is pretty likely that you will not get exactly the same tube the next time you go to buy them. (My not so great experience with several companies that shall remain nameless for obvious reasons.)

Unlike Edicron, JJ actually makes tubes, and my experience with their EL84 has been good. I really like their 300B although I have not bought any in the last couple of years - the ones I have are still chugging along.

I would suggest you try to find out who actually made these tubes so you can get the same type in the future. I don't have an objection to rebranded types provided that the seller tells me who the actual manufacturer was.

I think you'll agree there is a pretty big difference between a relabeler and an actual manufacturer.
__________________
"Extraordinary claims require extraordinary evidence." - Carl Sagan
  Reply With Quote
Old 28th November 2006, 06:49 AM   #3
rdf is offline rdf  Canada
diyAudio Member
 
rdf's Avatar
 
Join Date: Jun 2004
Location: big smoke
From the site it appears most of their EL84 stock is Russian. Quite a variety.
  Reply With Quote
Old 28th November 2006, 08:02 AM   #4
diyAudio Member
 
Tubes4e4's Avatar
 
Join Date: Jul 2005
Location: Leverkusen
Hi kaybee,

sonic results this different suggest that either one type is not conformant to EL84 specs or the circuit being used is "on the edge" and doesn´t tolerate minor deviations from tube specs.

Maybe it would be a good idea to measure both types in circuit, to find out if operation point really is the same. (Check voltage across cathode resistor).

Besides this, JJ/Tesla tubes usually are considered to be robust and good sounding tubes.

Tom
__________________
If in doubt, just measure.
  Reply With Quote
Old 29th November 2006, 04:52 PM   #5
Zibi is offline Zibi  Poland
diyAudio Member
 
Join Date: Jan 2006
Location: Bialystok
http://edicron.com/collections.html
"collections" explanation:
The Russian Collection: EL84 = 6P14P
Datasheet: http://www.mif.pg.gda.pl/homepages/f...13/6/6P14P.pdf
The Slovakian Collection: JJ tubes :-) http://www.jj-electronic.sk
The Serbian Collection: EI tubes http://www.eierc.com/rc/products.htm
  Reply With Quote
Old 26th January 2007, 03:57 PM   #6
phresh is offline phresh  United Kingdom
diyAudio Member
 
Join Date: Nov 2005
Location: Hampshire
Was just looking at their website (was actually looking for a nearby address and stumble across it) and I live just round the corner . Gonna pop in sometime next week as i'd also like to see what their capacitors are like.
  Reply With Quote
Old 26th January 2007, 10:27 PM   #7
kevinkr is offline kevinkr  United States
diyAudio Moderator
 
kevinkr's Avatar
 
Join Date: Sep 2004
Location: Boston, Massachusetts
Blog Entries: 6
Let us know what you find out..
__________________
"Extraordinary claims require extraordinary evidence." - Carl Sagan
  Reply With Quote
Old 26th January 2007, 10:33 PM   #8
diyAudio Member
 
Wavebourn's Avatar
 
Join Date: Sep 2006
Location: Pleasant Hill, CA
Send a message via Skype™ to Wavebourn
Quote:
Originally posted by kevinkr
Let us know what you find out..
Relabeled JJ?
__________________
The Devil is not so terrible as his math model is!
  Reply With Quote
Old 27th January 2007, 03:17 PM   #9
Zibi is offline Zibi  Poland
diyAudio Member
 
Join Date: Jan 2006
Location: Bialystok
Exactly .
http://edicron.com/caps.html#
http://www.jj-electronic.sk//pdf/TC_TE.pdf
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



New To Site? Need Help?

All times are GMT. The time now is 08:56 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2