Recent content by vigilante398

Unagi E4305 transformers are out of stock on the website right now, so you won't be able to get them by themselves or with Nobelium or Steddi Go PCB sets. I placed a restock order in August, they're expected to ship towards the end of October.

Bassdude is based on the 5D6 Bassman, which does indeed have a shared cathode connection across two triodes, but since each triode acts as an input stage for the respective channel you're only using one at a time, which made me think the 820Ω cathode resistor for V1A was fine for Bassdude...

There have already been a large number of resources suggested in this thread. Start with those. Also, as stated before, if you want to share what your general goal in modification is we can certainly point you in a more specific direction.

A quick summary: 1) Don't rush. You seem to be in a hurry to get in there and start poking around, and I think that is what is scaring people. "Tube amps can kill you" is not hyperbole. You can actually feasibly die. We're not trying to gatekeep, obviously you can't learn how to work on amps...

If you're trying to remove resistors and capacitors at random, you're going to run into some problems. There are of course rules to follow. Some weirdo made a post a while ago with an introduction to tube preamp design, that may have some useful information for you. But perhaps if you could let...

If you're set on using SpinCAD so you can listen to patches without FV-1 hardware but aren't trying to learn how to use SpinCAD to write patches yourself, you're going to have a hard time.

The FV-1 is capable of providing pitch-shifting effects, but it doesn't do it anywhere near as well as the POG or the Whammy. You could build a rough approximation of these pedals, but it would not work as well, and as @Paradox916 mentioned you will likely be disappointed if you compare it to...

Honestly my main suggestion for ipad would be to make sure you have some kind of drawing app. The main thing I use my tablet for is convenient referencing of existing schematics and doodling new ideas for schematics. Then when I get to a computer (don't get throat punched by the missus) I...

The Noble/Nobelium uses a Fender-style tonestack with a fixed mids response. It's a shelving filter with no fixed frequencies, and the controls are very interactive. That being said, you could try increasing the value of the 270pF cap in the tonsetack to something like 470pF or 500pF, that...

If you have the files you want in .spn but you want to listen to them, why not flash them to an EEPROM and listen to them with an actual FV-1? If your goal is to listen to the patches it seems like that would be the easiest way to do it rather than try to convert them back into SpinCAD format.

I'll mostly address this paragraph here. My test setup is a looper and my recording interface into a pair of studio monitors. This gives me a consistent platform so I know exactly what the output should look like each time. If there's a new design that I haven't verified before, I will run the...

My dude, as someone who has used Eagle, DipTrace, Altium, OrCAD, KiCAD, PADS, and Cadence Allegro, my personal experience is that DipTrace has the easiest learning curve and is the least intimidating to get started with. Everyone has a preference and I don't even use DipTrace anymore myself, but...

I've seen inconsistency there. Most of my stuff is standard anyway, but every now and then I have a design I think can be economic and the electros bump it to standard, where other times they don't. Not sure what the actual rule is.

They actually used to have a basic NE555, that went away a while ago. Apparently the basic component list changes based on what they feel like carrying. I've had to change a couple of the resistors I use based on basic part changes over the years as well.

If you're thinking about getting started with Eagle, I would highly recommend scrapping that idea and learning DipTrace instead.