bloodhawk
Formerly known as ViKiD(TM)
- Joined
- Sep 25, 2009
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Some observations from all the tube rolling i have been doing over the last 2-3 days -
Im loving the TS 5998 + 6H13C + TS 5998 + 6H13C with RCA 6SN7 GTB combo for now. Next ill be trying the Bad boys and the CV181-TII's with the same power tubes.
Been trying to find the GEC 6080 / TungSol 6AS7G for reasonable prices, but its been almost impossible.
Yeah, the TS 5998's really bring out the Mid's and a nice extension on the high end. The 6H13C's are bass monsters
The RCA 6AS7's on their own are really really well balanced tubes, but i didnt like them when paired up with the 5998's. But im sure there are people who will prefer that combination. I wont be using the TS 7236's without the 6H13C's at all. I remember when i last tried my friends 7236 in my crack, the high was super sharp, good extension, but way too sharp.
ooooh boy, TS5998+6H13C+TS5998+6H13C with the Sylvania VT-231's makes the amps soooo much better. And this is without the mods. Cant wait to try out the CV181-TII's once they get here next week.
Some observations regarding the Tung Sol 7236 tubes ( I grabbed 4 of these NOS)
- 3 are dual round getters (Horse shoe?)
- 1 of these is a dual rectangular getter.
- All 4 are grey plates.
Observations -
- Out of the 3 round getter tubes, 2 have orange text printing. One is the standard Black text. Here is the interesting part, the orange text tubes, sound way more dynamic than the black text ones. They even Bias higher.
Black Text tubes Bias @ about 50-52 ish. Orange tubes are Biasing around 55-58ish.
- The Orange tubes actually sound better to me than the standard 5998 (NOS) that i have been using.
- The mids are definitely a tiny bit more forward, but there is more texture to the low end, and there is bit of more added mid/sub bass. This is without sacrificing the treble clarity / texture or the openness.
Also the order the tubes are placed in matter way more with the 7236's. Im guessing because of the
lower trans-conductance vs the 5998's.
With the 5998's i couldn't tell any difference. (2 x 5998's + 2 x 6H13C)
But with the 7236's, the 6H13C's need to be first in order - 6H13C + 7236 + 6H13C + 7236
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