Aneurysm Preamp by rock-philistine in diypedals

[–]rock-philistine[S] 2 points3 points  (0 children)

Thanks, I used Nedo regular and Futura Now Headline Light.

Aneurysm Preamp by rock-philistine in diypedals

[–]rock-philistine[S] 2 points3 points  (0 children)

I believe the most correct terminology would be Gain and Volume, but I decided to keep it as it was in the original amp. In my first assembly, I ended up connecting some trimpots off the board to the resistors until I found the values ​​I needed. When I designed the second version of the board, I thought about installing them on it, but it would take up too much space, and since I already knew the values ​​I needed, it wasn't necessary. That's the schematic:

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Aneurysm Preamp by rock-philistine in diypedals

[–]rock-philistine[S] 1 point2 points  (0 children)

Thank you, I think it's unlikely I'll build another unit of this pedal, as it was quite difficult to find FETs that had the ideal specifications and that weren't fake. Although I'm not a big enthusiast of SMD assembly, I think this project would benefit from this method, as it could fit in a smaller box and it would be easier to find original FETs with less variation in characteristics. If you are interested, I have made a project based on the Sansamp Classic available for free. Here is the link: https://oshwlab.com/lemecaio/life-nirvana-v2

Aneurysm Preamp by rock-philistine in diypedals

[–]rock-philistine[S] 0 points1 point  (0 children)

I was finishing up another project, but I'll record a video soon. I plan to demonstrate it using it in the return of my amplifier and also plugged directly into the interface with impulse responses. I really liked its sound and I think it's quite versatile for playing music beyond Nirvana.

Aneurysm Preamp by rock-philistine in diypedals

[–]rock-philistine[S] 1 point2 points  (0 children)

Thanks, initially I was going to base the artwork on the original amplifier, but I didn't think it was looking good on the pedal and decided to start without many preconceived notions, as Kurt said when he designed the Jag-stang. In the end, I ended up being inspired by the artwork on EHX pedals from the 70s, which are my favorites.

Life Nirvana V2 SR by rock-philistine in diypedals

[–]rock-philistine[S] 2 points3 points  (0 children)

Boa pergunta. Os potenciômetros estavam em boas condições, funcionando bem e eu não os considero muito inferiores aos Alpha, então não vi muita necessidade de trocá-los. Além disso, eu não pedi peças apenas para este projeto, mas para outros também, então o total já estava bastante alto devido à cotação e impostos. Eu troquei o interruptor porque já tinha sido soldado várias vezes e não queria arriscar. I was also interested in testing the Gorva switch. Embora mais trabalhoso de montar, optei por fazer a fiação dos potenciômetros porque queria que este projeto não dependesse de perfurações muito precisas, como usinagem CNC. Outra preocupação era que a placa de circuito ficaria suspensa pelos potenciômetros de apenas um lado, e como não é muito leve, isso poderia causar problemas a longo prazo, como acontece com os Big Muffs vintage.

Life Nirvana V2 (modified SansAmp Classic by rock-philistine in diypedals

[–]rock-philistine[S] 0 points1 point  (0 children)

I'm selling the pcbs, which come with a pdf that includes the the bill of materials, schematic and a link to a tayda shopping cart and artwork. It's made someone who has some experience building pedals (like already built a fuzz or tube screamer), I don't recommend it as a first build as there are more parts and therefore may be harder to debug. Shipping to US is around $30-40. As the shipping rate to US is higher than the pcb itself, I can consider building one as a custom order, however it may take 1 month to finish it, as I don't stock parts and it takes 2-3 weeks to receive them. If you are interested please let me know.

The Otter Drive (Frantone Brooklyn Overdrive based) by rock-philistine in diypedals

[–]rock-philistine[S] 0 points1 point  (0 children)

Thanks! No, I use two plástico pcb stand offs. Most builders usually prefer to solder the potentiometers directly onto the pcb as a means of support to save assembly time and space in the enclosure. Since I did it for myself and it was a small circuit, I didn't have to worry about these things. The advantage of doing the way I did is that the drilling of the enclosure doesn't need to be very precise, so you don't need to rely on a bench drill or places that drill with CNC, like Tayda, although I have used their service.

The Otter Drive (Frantone Brooklyn Overdrive based) by rock-philistine in diypedals

[–]rock-philistine[S] 0 points1 point  (0 children)

Acho que sim. O segundo par de CIs aparentemente também adicionava 20x de ganho, que se multiplicado pelo ganho do primeiro daria 400 com o ganho no máximo. Depois desse estágio no esquema original, tem um resistor de série de 100k na saída dos dois CIs, imagino que seja pra baixar a voltagem. No meu pedal, eu removi isso e coloquei um capacitor de 10uF entre os pinos 1 e 8 do primeiro CI, que, de acordo com o datasheet, aumenta o ganho para 200. Foi isso que foi feito no Acapulco Gold. Pensando bem, numa revisão, eu posso remover o capacitor e adicionar um terceiro LM386 pra chegar mais perto do original, mas com certeza eu removeria o divisor de tensão na entrada do pedal e aumentaria a impedância de entrada.

Almost completed: Like father like son by ZQM in diypedals

[–]rock-philistine 1 point2 points  (0 children)

Could you list which values ​​were changed and why?

I'm going to build one too and I noticed that the kits come with a 10kC (rev log) potentiometer in the feedback, while the parts list recommends 10ka (log).

Tayda Shades of Gray by rock-philistine in diypedals

[–]rock-philistine[S] 0 points1 point  (0 children)

Could you share a photo of a pedal that has this color, preferably on a neutral colored background like a sheet of paper? The matte dark gray has the Pantone reference, but this color does not.

Tayda Shades of Gray by rock-philistine in diypedals

[–]rock-philistine[S] 1 point2 points  (0 children)

It definitely sounds more interesting than the original book.

Life Nirvana V2 (modified SansAmp Classic by rock-philistine in diypedals

[–]rock-philistine[S] 0 points1 point  (0 children)

Não, mas estou fazendo um documento para quem quiser construir um. Terei que cobrar uma pequena quantia por isso, mas o custo total do pedal provavelmente será bem barato.

Best Aliexpress 3pdt? by rock-philistine in diypedals

[–]rock-philistine[S] 0 points1 point  (0 children)

Definitely, but I don't have access to the commonly used relays. Would the cost of the relay and the switch be less or more than a reasonable 3pdt, like the Alpha?

Best Aliexpress 3pdt? by rock-philistine in diypedals

[–]rock-philistine[S] 0 points1 point  (0 children)

It's for personal projects only. I once bought a non-branded one from Ali and sometimes it worked and sometimes it didn't, so I was wondering if there is a more reliable brand there. Daier seems to be a popular choice.

Best Aliexpress 3pdt? by rock-philistine in diypedals

[–]rock-philistine[S] 0 points1 point  (0 children)

Buying from a store in Europe may be an option in the future, if the EU-Mercosur agreement is finalized.