The Amp Garage

Clamp a couple of lengths of wood to the bench with a large block glued at the end of each or even a couple of cross lengths screwed on. Some set up so that it can support the cabinet from the inside while you work on the outside. Grab the baffle cut-out or other inside surfaces to turn it over as n...

Cool photos.

Reeltarded wrote: ↑Thu Dec 07, 2023 5:27 am "Incantations, maths, and winds.. perfect voltage.. hope you... finds..."

Excellent! And uhoh.. this is going to cost a tiny fortune. At least I will be able to finish thinking about it. :) Thank you! Hopefully not a tiny fortune if you can find the right person/company with some interest in rewinding old iron for old amps. I've done my own and have a local business I've...

Back to your original question, any transformer winder will be able to crunch numbers on the coil design to fit the existing cores and target the new loaded output voltage you are after. Only thing that gets negotiable is if they have the tools to and are willing to replicate the original constructi...

dorrisant wrote: ↑Mon Oct 02, 2023 4:31 pm Does anyone have the schematic for the fixed bias circuit?

https://ampgarage.com/forum/viewtopic.p ... vr#p422936

https://ampgarage.com/forum/viewtopic.p ... vr#p418089

I did some repairs on one years ago for a friend. Was a 1964 model and in good condition. Also fell in love with the tuxedo look with the Brownface era shaped white knobs instead of the later skirted knobs. The bass channel sounds wonderful for guitar and contrasts with the normal channel nicely. I ...

So a few years ago I built a custom jazz amp heavily based on a Gibson GA-75 for someone (single channel version with a number of extra features). There are some differences to your GA-30 RVT but also a lot of similarities. I had exactly the same problem that you are describing! I was pulling my hai...

I don't like the overdriven tone from a SE power stage anywhere near as much as a PP power stage. Two reasons: I like PP amps with a healthy amount of screen compression best. It effects not just the tone but also the dynamic feel of the amp. SE can only ever have that on one side of the waveform. S...

Always love seeing other people's winding photos.

wpaulvogel wrote: ↑Tue Dec 14, 2021 1:11 am I included a picture of the pattern.

Classic high performance interleaving that. The ones I've done with that pattern have sounded great.

I've always wondered how an Express with a 6K6-GT output stage would go. I bet it's killer!

Great to see someone else winding their own transformers too. A labour of love (and hate) but you get what you want and in some cases what you can't even buy from elsewhere.

There are lots of others too, spot checking across the range. Quite a few OTs with the wrong primary impedance and PTs with the wrong HT secondary voltage.

I don't know that it's much of a problem, but yes my pedal avoided it. My stereo at home only have 64 steps on the volume control and you don't really notice the steps as you turn up and down. With 256 step resolution it is probably more than adequate. Depends what parameter you're controlling with ...

I built a custom digital volume pedal for someone a few years ago, which was my first look at digital pot chips. Once I worked out the right one to use that had the serial comms setup I wanted to use with the Arduino that controlled it, it was a breeze and worked great. The analogue side was just li...