Tube names

kristoffereide · September 23, 2009, 04:23:52 AM

How about if we make a list of the different names for one tube? I've experienced problems finding certain tubes, because different dealer deal with different names. Does such a list exist allready?

I can start, and update the first post so one doesn't have to read the entire thread to find what he/she is looking for.

*12AU7 - ECC82 - 5814
*12AX7-ECC83-5751-7025
*6L6GC-KT66-EL37-5881-7581A
*6CA7-EL34-KT77
*6BQ5-EL84-7189
*KT88-6550-7027
*6V6-5871-7184

edvard · September 23, 2009, 05:07:30 AM

Aha, the old US-European-Military cross-reference thing, eh?
You can find those in the backs of most tube reference books or the Tube Substitution handbook (I wish I still had that) but I'll post a few:
12AX7-ECC83-5751-7025
6L6GC-KT66-EL37-5881-7581A
6CA7-EL34-KT77
6BQ5-EL84-7189
KT88-6550-7027
6V6-5871-7184

That's all I have off the top of my head (some may not be exact).

captntasty · September 23, 2009, 06:36:11 AM

12AX7-12AD7-12DT7-12DM7-12DF7-7729-6681-ECC803-ECC803S-E83CC
12AT7-6201-ECC81-ECC801S-E81CC
6V6-5992-7408-VT107A
5Y3-6106-6087

Ripthorn · September 23, 2009, 09:39:05 AM

A 5751 is not another version of the 12AX7 per se. It has a mu of 70 while the 12AX7 has a mu of 100. It's rumored to be the tube SRV used n place of the 12AX7's to get "his" sound.

slideman82 · September 23, 2009, 10:49:45 AM

I think those rumors are right... anyway, 12ax7 has too much mu factor, I would use 12at7.

Attention! El34 are pentodes (so thin body 6CA7's, similar to EL34), KT77 are tetrodes (so big fat 6l6 type body 6CA7's)

wavley · September 23, 2009, 11:12:23 AM

To clarify: True 6CA7s are Beam forming Tetrodes while EL34s are Pentodes even though they are pin for pin compatible and identical in application, but they DO sound a bit different.

kristoffereide · September 23, 2009, 11:39:38 AM

oh... now I'm not able to edit the first post

CynicalMan · September 23, 2009, 04:04:13 PM

You can find a lot of that info here:
tdsl.duncanamps.com/tubesearch.php

frequencycentral · September 23, 2009, 04:21:00 PM

...and here: http://frank.pocnet.net/

Ripthorn · September 23, 2009, 05:35:02 PM

Quote from: frequencycentral on September 23, 2009, 04:21:00 PM
...and here: http://frank.pocnet.net/

I can't tell you how much time I spend there. It's sad that sometimes I will read through random data sheets just for fun.

slideman82 · September 24, 2009, 04:34:24 PM

I enter there several times a month! It's an incredible database.

edvard · September 29, 2009, 01:55:17 AM

Quote from: Ripthorn on September 23, 2009, 09:39:05 AM
A 5751 is not another version of the 12AX7 per se. It has a mu of 70 while the 12AX7 has a mu of 100. It's rumored to be the tube SRV used n place of the 12AX7's to get "his" sound.

I was kinda wondering about that...
Like I said, most of this was off the top of my head with some help from Google and the GE Essential Characteristics book.

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Tube names