gibsonette wiring diagram/layout?

[dijos]

Me and a friend are going to build a gibsonette clone, but he said that he needs a wiring diagram. I already have a schematic, but I guess I'm looking for the physical layout for the box that houses the tubes and so on. does anyone know where I can get one?

[JohnnyCrash]

Originally Posted by dijos

Me and a friend are going to build a gibsonette clone, but he said that he needs a wiring diagram. I already have a schematic, but I guess I'm looking for the physical layout for the box that houses the tubes and so on. does anyone know where I can get one?

Draw it up yourself. Drawing a layout from a schematic is easier than you think and it helps a lot when you start to drill and stake the board.

If you're really having trouble, look at other layouts. Look at different phase inverters and how they work. Look at preamp layout, filtering layouts, etc. Look at how most folks deliver B+ on down the line from filtering to preamp V1. It is all known territory at this point - tube amps are a very old technology. When in doubt, borrow.

Which Gibsonette is it?

[dijos]

ga-8. He's built a few amps before, I never have. I just want a small, good, clean, attractive amp. I'll be building a hardwood cabinet, so it can stay in my living room and keep me and my wife happy.

[JohnnyCrash]

GA-8? That's a 5Y3 rectified, one 12AX7, and two 6V6 amp, right? It's essentially a parallel Champ. Single ended with two 6V6's in parallel.

Check out a 5F1 tweed Champ layout for some basic ideas. Or even Angela's Super (or Double) Champ.

An extremely basic circuit - shouldn't be too hard to draw up.

[jhundt]

That is the amp I learned on (only mine was called a Dicoverer I think.. some kind of satellite name)

It was the first time I tried to understand how a tube amp worked. At the time it was very difficult to find circuit diagrams and schematics. I learned everything from tracking each wire in the amp and trying to draw what I saw, with a beginner's electronics book to help me.

That parallel output section really baffled me because all the design info I could find either showed a single-tube single-end output, or two tubes in push-pull. Luckily I stumbled across the parallel output tube design in a 1964 RCA tube manual, then I saw the light.

My Gibson was a real rat's nest inside - true point-to-point wiring with no circuit-board or fibre-board, not even solder lug terminal strips. It sounds nice that's for sure.

Like Johnny said, if you want to make a layout drawing just use the Princeton 5F2-A, and simply add a 2nd 6V6 power tube. I seem to remember that the circuit was almost identical. (Johnny suggested the tweed Champ, but the Princeton has a tone control like the Gibsonette).

edit APOLOGIES TO J CRASH: I just looked up a Gibsonette diagram and there is no tone control, so you were correct about the tweed Champ. I tracked down the Discoverer - man that amp changed specs every day! Turns out mine was a GA-12, blonde tolex, parallel 6V6s, with a tone control.

[TNO]

I've owned a bunch of vintage Gibbies and IMO the push-pull amps sound much better.