CurtZHP
Well-known member
My last tube build, "The Heavy Artillery," built around a UTC LS-10X and an LS-50 has been working great. Still very grateful for all the help I got here in bringing it to life.
I recently acquired an LS-21 interstage transformer. I'm curious as to how I might incorporate this into the existing design, or something similar. As I understand it so far, this is fed from the plate of a tube preamp stage, and the secondary is then usually connected to the grids of a Push-Pull stage.
What are the advantages/disadvantages to such a design? Does it have to feed a PP stage, or can it feed a single tube output stage prior to the output transformer?
The few Google searches I did brought up a load of power amp schematics and a few old radios. Not much in the way of preamps.
Thoughts?
I recently acquired an LS-21 interstage transformer. I'm curious as to how I might incorporate this into the existing design, or something similar. As I understand it so far, this is fed from the plate of a tube preamp stage, and the secondary is then usually connected to the grids of a Push-Pull stage.
What are the advantages/disadvantages to such a design? Does it have to feed a PP stage, or can it feed a single tube output stage prior to the output transformer?
The few Google searches I did brought up a load of power amp schematics and a few old radios. Not much in the way of preamps.
Thoughts?