Here you’ll find a collection of things that I do, make, say, and think. It collects projects published across my sites, including custom-built guitar and hi-fi amplifiers and effects, custom PC servers, and rescued or upcycled hardware. Simply a central place to collect what I’m doing with some of my creative energy at any given time.
If you are looking for my professional information go to >JohannesJohansson.com<
- DIY
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- DIY! In audio electronics, guitars, computers and misc
- Featured Builds
- Guitar Amplifiers & Hi-Fi
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- Homelab
- Amiga Next-Gen Build
- Pedal Progression
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- Dumble Overdrive Special
- TrainWreck Rockette
- High Gain SLO/Ubershall
- Custom DDC (Hi-Fi)
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Categories
- DIY (30)
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- DIY Computation (8)
- DIY Misc (5)
Random Posts
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Silence Your Guitar Amp: Variable Voltage Regulator
A variable voltage regulator lets a loud tube guitar amp keep more of its core feel while behaving better at home volumes.
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Dumble Overdrive Special: 3 Mods
Dumble Overdrive Special: 3 Mods covers the effects loop, switching options, heaters, and other practical refinements beyond the base clone.
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PC Water Cooling: Maintenance
PC water cooling can pay off in noise and performance, but this maintenance pass shows what growth and clogging eventually look like.
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Amiga Next-Gen Build: 2 Motherboard repair & power supply
The second Amiga Next-Gen Build entry chases heat-related instability through motherboard repair and power-supply suspicion.
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TrainWreck Rockette: 2 Headshell
The TrainWreck Rockette headshell stage begins with an old VOX donor amp, teardown work, and heat-management prep.
TrainWreck Rockette: 2 Headshell
A good find: this old ’70s VOX transistor amp, from my old music teacher no less, seems like the perfect candidate for a Trainwreck build (a VOX AC30 Top Boost with EF86). Non-functioning and quite dusty, the first steps are making room and starting the restoration.
First, removing the internals, but then housing a hot tube amp in such close quarters is not something the box was designed for. So second, I paint it in high temperature automotive paint and then cover it in aluminium foil to reflect any heat.
Then to bend the chassis, I use thick aluminium into a U, and cut down the original back to make up a top cover, but ventilation is more than necessary, so a nice stretch metal mesh for the back and a slim 120 mm fan in front where originally there was a speaker. The power for this fan is run through a capacitor and diode from the amps heater supply, plenty to run this as well, but wanting to fine tune it I first go through a little PCB allowing me to vary voltage anywhere from input voltage to 0V.
Still some way to go, but that’s the casing basically done, next last bits need to go on the actual circuit in the chassis and I have transformers to order, then it is done.
TrainWreck Rockette: 1 Redesigned
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