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basspig (November 30, 1999 at 12:00 am)
The GE tubes tended to be gassy, handle less power and shorter lived. The Tung-Sol were pretty robust, as were the RCA branded 6L6's.
2468xx (November 30, 1999 at 12:00 am)
I don't think a KT66 will directly replace a 6L6GC. Also, those Russian 6L6GC wont work in some circuits designed for USA 6L6GC's.
LeviMan2001 (November 30, 1999 at 12:00 am)
@MovieTech Hmmm well it's running 406v through a 470 ohm anode resistor. I got 'em and they work (although I had to bias them) and sound pretty dang good!
MovieTech (November 30, 1999 at 12:00 am)
@lagus76 that is exactly what they are. The other give-away of a RCA-manufactured tube (regardless of brand) is the type number will be printed in a thick font within a similarly thick octagon, and the 'USA' is sometimes printed at the top of the octagon, and sometimes a dashed line will be below the octagon. the key is the thick dark gray ink that was used to print the type number on the tube - other manufaturers used the octagon but with a different font and thinner lines in the octagon...
MovieTech (November 30, 1999 at 12:00 am)
@LeviMan2001 Metal 6L6 have far lower max ratings than the 6L6GC - you risk killing the tubes and your amp if you use them in an amp running a B+ higher than 350V.
MovieTech (November 30, 1999 at 12:00 am)
@laterallateral They may have some value to vintage radio and audio collectors. NOTE: The 6L6G is NOT backwards compatible with the 6L6GC in most modern amp circuits as they have far lower maximum ratings than the GC does (this is also true for the metal 6L6, small-coke-bottle 6L6GA and the straight sided 6L6GB - they have identical ratings to the 6L6G).
djglukbh1 (November 30, 1999 at 12:00 am)
just to comply - russian 6l6's are not that bad. They just have different parameters
and can't run well on high voltages.
poikaa3 (November 30, 1999 at 12:00 am)
Love this! good info! Thanks.... Wary of the 350B!
servantguitar (November 30, 1999 at 12:00 am)
@audiotubes I play a lot of high gain rock and metal. What would you suggest? I don't want my clean to breakup hardly at all, but i want some good saturation on my lead channel.
dancingrizz (November 30, 1999 at 12:00 am)
RCA grey plates 4 me thanks. |
