Tube charts

Yoda · Post by **Yoda** » Mon May 23, 2005 8:13 am

Does anyone here have or know of a link to a site that explains tube (valve) characterists in sonic terms? I don't mean in the general sense. I understand the basic differences between 6V6, 6L6, EL84, EL34. I mean the difference between specific tube part numbers. Like say, how a Sovtek EL-34 STR-447 differs sonicly from a Siemens N.O.S. EL-34 STR-450. (I got those numbers from a Mesa/Boogie parts page just to use an an example) Is there a site which can describe these and other tube sonic differences? I've tried google but all I get is general information on basic tube groups.

ant · Post by **ant** » Mon May 23, 2005 11:25 am

An el34 is an el34...Sovtek have names like 12ax7A, 12ax7Lps which is just a different construction(just like buying a different brand tube nearly). Electrically they should be identical but the construction changes the tone somewhat?

It sounds like you are asking the sonic differences between brands, the only thing to do is find reviews etc on them

I think that str thing might be mesa tubes only? Or is it a brand str/harma(Chinese tubes)

You can get tubes that have higher ratings like 6l6GC vs 6l6G vs 6l6 also JJ 6v6's and some of there el34's (e34l)

I would stay away from mesa tubes, buy a manufacturers' tube not a relabeler, and save cash

HTH

Bluesbird · Post by **Bluesbird** » Mon May 23, 2005 7:12 pm

http://www.guitaramplifierblueprinting.com/ is a good resource, have a look at the wealth of information there.

Yoda · Post by **Yoda** » Tue May 24, 2005 2:08 am

Thanks Bluesbird.