Tube Amp Archive

Hello all,

Been looking into ss rectifiers, and found the following topology in master blencowe's book

But I'm wondering why doesn't (or does?) the current flow as shown in the poorly drawn schematic attached?

Wisdom will be well appreciated

Beautiful, thank you very much!!

Hello All, I built a 5F1 from scratch and it sounds fine hehe Now I tried a 5E3 from a mojo kit and it is hummy, Any recommendations to decrease the hum? https://youtube.com/shorts/QC7s09hAYOU?si=vIFj3s2QDDwbXx-M https://youtube.com/shorts/rb6FV4HxJb8?si=x-dd8_Fbgae7v0Ec https://youtube.com/shorts/a...

nuke wrote: ↑Tue Aug 26, 2025 9:23 pm Dumble just dropped the high voltage plate supply through a resistor to power the FET input board.

Cool! I'll try this hehe thanks!

pdf64 wrote: ↑Tue Aug 26, 2025 2:22 pm
Do you realise that a 250k send level pot totally negates the low output impedance of the preceding buffer?

Nope, how so?

Hello all!

Want to build a tube amp with a ss fx loop,

How should I power these transistors?

Should I rectify the heaters 6.3V ac?

Thanks for the insight!

Hello All!

What's the finction of the 500pF that's shunted between plate and cathode?

What's the effect of sending hi freq signal to the cathode?

Thanks for the insight!

Hello All,

I'm from south america and will go to Finland soon,

Any tube amp shop suggestions in Europe that could deliver their items there will be appreciated!

Mainly looking for capacitors, resistors and tube sockets, normal stuff and maybe fancy stuff,

Thanks in advance!