▲ 63 r/howdoesthiswork+1 crossposts

Why does this do this

have this old screen chromebook screen protector and i just wobbled it and it made that sorta fun y sound..i just want to know why it does, and makes that sound

u/ReasonableFall177 — 1 month ago

People wrong about the PSU from the Bass 400 working in the D-180?

So, I'm working on an amp based on the Mesa Boogie D-180. The official schematics of the circuitry are available outside of the power supply. The first and second included images are the two pages of the schematic. At some point, I found a schematic of the Power Amp circuitry, but I can't find the source image for that at the moment.

Nonetheles, I am trying to work on the power supply. All my searching leads me back to this talkbass forum post where people allege that the power supply from the Bass 400 is compatible with the D-180. The third included image is the schematic of the Bass 400 power supply.

My problem is that the positive power rails don't line up voltage-wise. In the attached schematics, you can see that tubes 3 and 4 from the D-180 use a 430 volt rail. Tubes 1 and 2 also use a 455 volt rail labelled "D". But if you look at the Bass 400 power supply schematic, you can see that after the 535 volt B rail, the C rail goes down to 370 volts. Neither a 455 nor 430 volt rails seem to be present in the Bass 400.

Additionally, tube 4 utilizes -56 volts of negative Bias power, but the negative bias voltage on the Bass 400 is -63 volts.

The specs *do* line up on other fronts. For example, the 6L6 Power Amp circuitry shows that it uses a 540 volt rail labelled "A", which is exactly what's present on the Bass 400 PSU. Also, the heating filaments for the various tubes use 6.3 volts AC, which is also there on the Bass 400.

Is there something I'm misunderstanding here?

If you have any to offer, I thank you for your guidance.

u/ReasonableFall177 — 2 months ago
▲ 11 r/tubeamprepair+1 crossposts

What's going on with Input 1?

I'm working on a circuit inspired by the Mesa Boogie D-180.

Input 1 is meant for lead, while input 2 is meant for bass.

Point 1 is definitely going from the tip of Input 2 to the circuit.

Points 2 and 6 are going to ground from the connection ground/sleeve.

What I'm confused about is points 3, 4, and 5.

The trace from point 4 has an "n" with an arrow pointing to it, which makes me think that it's the 'normal' output from a switching connector. Then what does that make points 3 and 5? If point 3 was going to the sleeve, why isn't it going to the the Input 1 symbol itself like the ground connection does? Or is it a switched sleeve connection? If that's the case, then it makes sense that point 5 is the non-normal tip connection. If point 3 goes to tip, then what does that make point 5?

Thank you for any suggestions

u/ReasonableFall177 — 2 months ago

Hardware Crash from Incorrect Power Supply

This is kinda silly but I just spent an hour or so pulling my hair out trying to figure out why my Minifreak was crashing.

What was happening was that when I had either the "Glitter Pop" or "Distant Blink" presets loaded, eventually the device would partially hang and emit a loud whine out of the audio outputs. The lights and interface would appear functional, but the sound would completely stop working.

I found that the faster and more notes that I entered, (either via MIDI or the keybed) the quicker the crash would occur and it would happen EVERY time. If I didn't enter any keys, the crash would still eventually happen after over a minute, but only if one of a handful of presets are being used.

I reset the settings, but the behaviour remained. I tried reverting from firmware 4.0.1 (the current latest) to 4.0.0, but Minifreak V would just hang. I was able to revert to 3.0.0 and then go back up to 4.0.0, but the issue was still present.

Then I thought to just do a basic sanity check and assure that I was using the correct power supply.

It turns out I was using an 18v PSU while the device is designed for a 12v one.

What happened was, I moved the Synth from one table to another in my studio, and I incorrectly assumed the power supply plugged into it at that time was the correct one. The Freak was sitting on an idle table in a corner of my room, turned on with the WRONG ADAPTER.

I have no clue of what point the switch between the two PSUs happened, but I was using the synth running off 18 volts for MONTHS and I never realized because MOST (nearly all) of the presets operated perfectly.

The two adapters were sitting right next to each other.

I seriously can't figure out WHY I had a 18-volt power supply in the room in the first place. Everything I use runs on 9-volt center-negative (guitar pedals, SP-404, etc) or 12 volts center-positive.

So, yeah. Be careful folks. Luckily standard practices mean that the device is designed robustly enough to not take any permanent damage from this. Though, if I were to be snobby, I feel like there should be some some checks in the voltage regulation circuit to prevent this whole issue from happening.

I was seriously planning out how I would end up contacting Arturia support and mail it back to them for RMA before I even knew the adapter was wrong. Luckily, everything is good now.

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u/ReasonableFall177 — 2 months ago
▲ 11 r/vinyljerk+1 crossposts

[Self] Calculating how big Minecraft disks are in real life

The jukebox in Minecraft is 1m³ (just like most blocks) and is 16 pixels wide. The disk hole is 16 − 3×2, so 10 pixels. Since 16 pixels is 1m, 1 pixel is roughly 6.25 cm. 6.25 by 10 is 62.5 cm, which is around 24.61 inches. The music disk texture is 15px wide and 10px high. If the width is 15px (which is 62.5 cm), then 10px is (62.5/15)×10 = 41.6 cm, which is 16.38 inches. So, the Minecraft disk is roughly 24.5 × 16.3 inches, or 60 × 40 cm

u/ReasonableFall177 — 3 months ago
▲ 11 r/mfdoom

Anyone feel a bit spoiled by the MV and VV production?

November has Come was my introduction to the man. I assumed that MmFood was the first project to tackle. Years later, and having listened to Madvillainy and Vaudeville Villain many a time, I'm kinda glad I chose MmFood first. While the production on it is great, I don't think it holds a candle to the wonky Madvillainy or afrofuturistic Vaudeville Villain. They are on another level of experimental that I find makes them stand out in the industry far more than MmFood. TMTYL has a bit more character, but production-wise, I don't think anything compares to those 2 albums.

NOTE: Lyricism is a different beast. I find the lyricism fantastic and fun on all his work, but the difference in attitude of the production throughout his career is far more spread out and varied in my opinion.

What do you think? What order did you approach the albums in, and how do you think that shaped your opinions of them?

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u/ReasonableFall177 — 4 months ago

[Lyrics] I go weeks/months with writer's block then scratch this up in an hour...

`For them, i only don joker once i go poker, they smile, i chuckle

Then they buckle, Cant relate, see calm fate then broche her

Paying subtle hate rebates as a "then n when"-type broker

Thinking he been worthy to create then reality's hype choked her

With confidentiality and suter of black tape, he stay armed

closest to causing new harm is a vibe of karma, provoker

If one is to approach her, beware of the beyond blonde toker

They stay med-led by sed, this moper's a pharma super soaker

How close is bros toes to overdose, hard to measure in confidence

in that, pleasure he grant from grosing snot toppings, condiments

In fact, I'll take double buffalo, leave the ranch, no, tripple it

Nah what i meant was "this is spam" dribble, wrong digits with it

Man, To them it's all a scam till the nill quick kill, know the vigile lit

The call's been sent, soon the men will stack, house tricklin it

It's them, quick duck rebut, quack n douse em in crack in a minute

Fucko been waiting for den to get tracked, in the pen, he just slack

At that point he's as good as gone, waiting in bed just to respawn

One second, he should be calm, waking in hood, the new dawn

Is it reincarnation? What in tarnation, he stacked spacey relations

Done be astral, so ghastful, phantom of the chakra, creation

about saint peter: when you meet her, dont forget who's teacher

comes to humans, dont be assuming what predates creature

Hark, who's to say what's written in scripture, the truth'll miss her

Till the preacher gets spark to the rods, quitter's the godsitter`

.

The context/subject revolves around my life living with paranoid schizophrenia, PTSD, addiction, and a life of regrets. Critiques welcome.

I'm sorry, I'm having issues formatting it properly on mobile

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u/ReasonableFall177 — 4 months ago

Making beats this way is so damn cozy, I love this setup

Just wanted to share my cozy bedroom coffee table "studio" setup.

The hardware is a Dirtywave m8 model 02 tracker that's being broadcasted to the CRT with a Raspberry Pi. I have fancy samplers and synthesizers and interfaces and whatnot, but 99% of my production time is spent chilling, lying back on my futon, staring at this Trinitron. The laptop is running Ableton which has my exports from the m8, but it isn't attached to this setup. The sampler you see there is a SP-404mkII with a custom skin I printed for it, though I don't really use it outside of rehearsing live setups. I use some Edifier bookshelf speakers for the coffee table, and some nice Genelecs for when I'm hooked up to my audio interface. The laptop is a gen 2 L13 thinkpad. The cpu on this damn thing isn't meant for music production, especially when I have 120 tracks in a single live set, but I make do!

This cute device has forever changed the way I make music and I am so grateful for it. I produced music for 10 years and never released anything until I started using the m8. Now I release experimental electronic and rap music almost every month! This short intro is from track 02 on the 24 minute album I released today. The concept behind it is an instrumental commentary on living as a schizophrenic with PTSD and reflecting on how I've managed my trauma. I'll warn you though, the release gets a little intense. I like to call my music "flash game-core" as I have difficulty describing it in any other way.

If you're interested in making music in a way that feels like a video game, look into trackers and specifically the history behind the m8, which is *HEAVILY* inspired by the LSDJ rom for the original Gameboy. I got started with this workflow by purchasing a $34 Teensy 4.1, which is a little Arduino-like ARM prototyping board that you can load with official firmware and connect to an assortment of devices which offers 80% of the m8 experience.

Life is good!

^(*I didn't see rules on the sidebar against self-promo, so I assume this is okay to share. If I need to repost with less info about the music, I understand*)

u/ReasonableFall177 — 4 months ago
🔥 Hot ▲ 6.1k r/danieljohnston+2 crossposts

The Dali Division of Periscopic Perception released their penultimate prototype.

u/News-Royal — 4 months ago