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<
Categories
- DIY (30)
- DIY Audio (18)
- DIY Computation (8)
- DIY Misc (5)
Random Posts
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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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Homelab: 2 Tiny 24 Core virtualization Computation with hacked hardware
A compact homelab build using repurposed server CPUs and hacked hardware to create a tiny 24-core virtualization machine.
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Dumble Overdrive Special: 1 Head & Circuit
An introduction to the Dumble Overdrive Special build, why the original amplifiers are legendary, and what makes the project worth chasing.
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Pedal Progression: 3 Zendrive
Pedal Progression moves on to a Hermida Zendrive rebuild, fixing old enclosure mistakes while keeping the fuller overdrive voice intact.
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High Gain SLO/Ubershall: 1 Intro
An overview of the main high-gain amplifier platform: a heavily modified SLO/Ubershall-inspired build with a long list of switchable ideas.
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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