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In Reply to: RE: 2a3 and 300b posted by Tre' on July 03, 2014 at 09:47:20
"Isn't the spacing between -40 and -80 a little bloated with the space between -40 and -60 wider than most and the spacing between -60 and -80 the widest of all?"
Is that an artifact of the plotter, the test, or the tube?
Sure we can measure these 75 year old plate curves with a micrometer to find minor annomalies. The fact remains that the 300B along with other triodes designed in the 1930s are extremely linear. To assert that the 2A3 is more linear than the 300B is just polemics. I use the 2A3 because I don't need the power, but if I were to need a good clean 8W I would build with the 300B.
Follow Ups:
"To assert that the 2A3 is more linear than the 300B is just polemics. "
I don't see it as an attack at all.
IF the published plate curves ARE correct then the 2a3 IS more linear than the 300b.
Have you looked at the curves for the 45?
BTW Did you read my post arguing the other side? A 300b is a very linear tube. I'm just getting ready to replace my stereo SET 6b4g amp with my mono SET 300b amps. I like changing things up once in a while.
The 300b amps do sound different than the 2a3 (6b4g) amp but that could be do to many things other than the output tube.
Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"
"The 300b amps do sound different than the 2a3 (6b4g) amp but that could be do to many things other than the output tube."
Yup
I use both and they are voiced different. Period. Is one better than the other? Maybe. Depends. What is the circuit topology? What is the space you're trying to fill? What speakers? What is your source material? Did you wake up cranky? What kind of preamp are you using? Why? For this thought exercise let us avoid cables... You see where this is going.
I love both. I mix and match endlessly. I get tired of a particular sound and need change. Neither one is better and I am fine with that kind of ambiguity in my life. There are simply too many other things which are more important.
Like what am I having for dinner?
.
Have Fun and Enjoy the Music
"Still Working the Problem"
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