Coupling Cap or Lundahl as interstage?

[978HK]

I'm not countering anyone, please.
I also use transformers and capacitors in my system. I have no exclusive opinion.
But I ask, why 7-8-12-15 meters of some plastic (or waxed paper, or...) would sound better than 30-40-50 meters of copper wire wound on permaloy or supermaloy or... ?

Conductors act differently when within a magnetic field. 🙂

 

[DF96]

But I ask, why 7-8-12-15 meters of some plastic (or waxed paper, or...) would sound better than 30-40-50 meters of copper wire wound on permaloy or supermaloy or... ?

That just happens to be the way the universe works. In a different universe, where materials have different properties, the answer might be the oher way round.

 

[aardvarkash10]

I'm not countering anyone, please.
I also use transformers and capacitors in my system. I have no exclusive opinion.
But I ask, why 7-8-12-15 meters of some plastic (or waxed paper, or...) would sound better than 30-40-50 meters of copper wire wound on permaloy or supermaloy or... ?

physics, mostly.

 

[Wavebourn]

Ok , If someone could help me to understand?

Iam doing a 300B amplifier and I have that doubt.

For 300B? Of course, interstage transformer is better than just a naked cap driving a grid with non-linear impedance.

Another option is, cathode or source follower that drives the grid directly, and can be safely coupled by a cap.

EL34 in pentode mode? A cap is fine, just don't drive it up to hard clipping.

 

[disco]

Why is option D a bad choice?

 

[DF96]

Maybe because it removes grid bias from the 300B?