Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

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

WE 300B tubes.
WE 300B tubes.
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
Thread Tools Search this Thread
Old 1st August 2001, 07:45 PM   #1
Ignacio is offline Ignacio
diyAudio Member
Join Date: Aug 2001
Location: Caracas, Venezuela
Hello everybody.
I need to know how to tell if a tube has been used or not, and your help is welcome..as usual !
A guy I know has six NOS Western Electric 300B for sale.
They are the ones with the yellow letters, and the number 152 in five of them, the other with the number 126. I understand this is a code for the year they were built..right?
The boxes (blue with a white section) are in a so-so condition. There is a code on the box: 10-51 or 5-51 or 4-51, which I was told mean the month and year of manufacture...(???)
He is asking $ 450 each, but maybe he will reduce the price if I buy the six tubes. I may consider buying two tubes and sell the other four.
They are supossed to be NOS, but I have no way to know if they are new.
Looking at 300B pictures at some web sites, it seems to me that the internal metal parts (the almost flat, big ones) look like plain gray metal, but my friendīs tubes look like metal but with (apparently) some light dark coating (it is not easy for me to explain this). How can you tell if used or new ??
Thanks for your help
Best regards.
Jose Bulnes
  Reply With Quote
Old 2nd August 2001, 01:23 AM   #2
GRollins is offline GRollins  United States
diyAudio Member
Join Date: Feb 2001
Location: Columbia, SC
I can't count the number of times I've seen or heard someone say that they tested a tube and determined that it was 'new'. They are either misguided, or lying. There is no way to determine whether a tube has been used. The best you can do is test it and see if it has some life left in it, which is not at all the same thing as saying it's new.
The 'N' in NOS is often meaningless. The only thing you can count on is the 'O'.
I believe the 300's are being made again. Check around for pricing on current tubes before buying old ones.

  Reply With Quote
Old 2nd August 2001, 12:28 PM   #3
john is offline john  Philippines
diyAudio Member
john's Avatar
Join Date: Aug 2001
Location: pasay city
Lightbulb Plug the tubes to an existing 300b amp...

There's no way 2 know if a tube was used or not. By the way, He's selling it to you on a good price. Good or bad, tubes tester is the only instrument you can use to check the 300b. Original or NOS 300b tubes are becoming rare like the Western Electric 300b. And they are sought for their sonic signature and longlife reliability.

  Reply With Quote
Old 4th August 2001, 10:56 AM   #4
lilolee is offline lilolee
diyAudio Member
Join Date: Jul 2001
Location: London, UK
As an alternative you could go here http://www.diyhifisupply.com/.

The relevant part is the review of their Billie 300b kit by Thorsten Loesch. In it he compares 300b and the TJ sold by this site come out well. Not as prestigious as WE but guarenteed.

At least it's worth a look!
  Reply With Quote


WE 300B tubes.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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Sourcing JJ 300B tubes zigzagflux Tubes / Valves 3 24th May 2008 06:02 PM
PX25 tubes in a 300B Amp? korneluk Tubes / Valves 1 27th February 2007 12:36 PM
suggestions for 300B tubes dsavitsk Tubes / Valves 2 3rd September 2005 06:46 AM

New To Site? Need Help?

All times are GMT. The time now is 10:03 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio