Tube DIY Asylum

I tried it a few times, how about you?

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Story

A

In Reply to: RE: Choke or CCS loaded ECC83 in phono stage? posted by Tre' on February 05, 2025 at 08:21:25

I was tempted to think it would do just that, give me more vgain. But it's not a tube!

It wasn't enough, although it should have been. Graphs are not applicable in this case. My K&K CCS, although dated V09/02 years old, came with instructions and I followed them without mistake. At least 4 times or more. It was still not enough gain and put them away, still have them, worth a try but didn't particularly care for the sound.

Looking at the circuit he's reading, maybe he should try it anyway and see if it's suitable for his purposes although I doubt it.

Maybe you should explain it to HIM, NOT ME with some helpful advice.

Good luck you 'all

Follow Ups:

RE: I tried it a few times, how about you? - Tre' 10:40:43 02/05/25 (3)
"I was tempted to think it would do just that, give me more vgain. But it's not a tube!"
What is not a tube?
CCS aside, the gain of a triode tube stage goes up as the plate resistor is increased. That is a direct result of the load line becoming more horizontal. That is just a fact and if you are not getting that result then you are doing something wrong.
BTW the theoretical max gain of a stage is the mu of the tube in use. That can never be reached but with a CCS plate load and a high 'following stage' grid resistor value you can get really close.
P.S. I may have mis-read your post. If you got more gain but not enough more gain then I would use a different tube, one with a higher mu.
Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"

Edits: 02/05/25 02/05/25
- 12ax7, quite popular with the guitar crowd - Story 11:08:53 02/05/25 (2)
  you must have read my reply wrong, or I was just wrong answering this guys question and should not have as you mistakenly done so. My Brain damage from a fall works sporadically now, but getting better. I used to be far, far more succinct at one time.
  
  I stand by my statements however, the query in the beginning of thread asks for CCS or Choke, and I say it will not be enough. Maybe a tube stage will do. Besides he never asked how much gain he needs.
  
  If you've tried to get me off this forum, you've done a good job. I'll give you a 'B' grade. I will never GIVE UP. Doctors advice.
  - RE: 12ax7, quite popular with the guitar crowd - Tre' 11:21:44 02/05/25 (1)
    I have never tried to get you off of this forum.
    I don't understand why you would have that impression?
    Audio electronics is all just science. Opinions (especially mine) should never be taken personally. I only state what I believe to be the science. None was meant as a personal attack.
    
    Tre'
    Have Fun and Enjoy the Music
    "Still Working the Problem"
    - RE: 12ax7, quite popular with the guitar crowd - Story 11:35:43 02/05/25 (0)
      it said it was a 'B' grade, and I will keep trying under MY circumstances.
      
      Now please ask the OP what he wants, what he's looking for. Thank you Tre'

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