XjFred

Hi all, Out of frustration with LTSpice, I've been building a tool for designing guitar tube amps stage by stage, and it's at the point...

Bought a new PT for this one. Gonna move old PT to the other British 4xEL34 amp which doesn’t have proper one. Specs for new PT: Pri 0...

Sure ! That's why I said "as long as the transformers can handle it" which means I will check if they can if/when I decide to boost this...

Adding a pair of power tubes means new OT and possibly a new PT. So that's not something to do on a whim fyi.

I'm actually going to order a set of ceramic capacitors from Amazon. I'll run some tests. I couldn't help but look into how to add a...

You have good questions here! Not too hard and all the tube related & time consuming reading sessions finally find use. I’m def a noob...

Ok, no lights when I'll start the damn thing. I got it. :LOL: I think now I have all my answers. Time has come to order.. One last...

Didn’t notice this earlier, but if you want to pollute your signal with noise go for it! With careful planning it’s doable, but there’s...

It may be a paraphrase inverter as I found someone who made some modifications in a that amp years ago mentioning it : Quote : "Hi, I...

0.5-1W is all ok. The amps I have worked with have had 0.25-0.5W grid stoppers even on power tubes. I use bigger wattage ones as they’re...

Ok, let's try Option 1 and see if the overdriven V2a+b sound musicals. If not I'll go for option 2. Ok for the grid stopper on V2a, but...

10K gridstopper for V2a aka gainstage before splitload PI stage. @GAStan cathodyne splitter there so unity gain at most and poor...

Looking closer at this I see two (of possibly several) options: Option #1: This gives the widest range of volume control, possibly...

I like your original suggestion of replacing R14 and R15 with a 1m pot. It changes the circuit very little and gives the volume control...

Just a reminder AT and AU might not be straight drop-in substitutes for AX. They pass more drive current so changing plate/cathode...