KrIVIUM2323
Well-known member
Hi.
I'm planning a tube output line stage and want it to have floating out.
The final stage is a cathode follower with current source, capacitor coupled (as i want to have a transformerless unbalanced out too) and it should have an output impedance in the 55r range with the tube choosen.
So i need an ungapped 1:1 transformer for my floating balanced output, but i face many choice in references and don't know which one to choose for optimal performance (excluding max output level and quality of build itself, obviously).
I suppose the dcr of primary and secondary play a role (compromising bandwitdth somewhat?) in the choice but i don't understand how and why... and like to make educated choice whan i can!
Could you explain me what to look for and why?
I thought about a Carnhill VTB 2281 first and then seen the VTB 9071 which could work too ( you can check datasheet in this link: http://www.audiomaintenance.com/downloads/carnhill_design_guide.pdf).
Thanks a lot.
I'm planning a tube output line stage and want it to have floating out.
The final stage is a cathode follower with current source, capacitor coupled (as i want to have a transformerless unbalanced out too) and it should have an output impedance in the 55r range with the tube choosen.
So i need an ungapped 1:1 transformer for my floating balanced output, but i face many choice in references and don't know which one to choose for optimal performance (excluding max output level and quality of build itself, obviously).
I suppose the dcr of primary and secondary play a role (compromising bandwitdth somewhat?) in the choice but i don't understand how and why... and like to make educated choice whan i can!
Could you explain me what to look for and why?
I thought about a Carnhill VTB 2281 first and then seen the VTB 9071 which could work too ( you can check datasheet in this link: http://www.audiomaintenance.com/downloads/carnhill_design_guide.pdf).
Thanks a lot.