Designing a 3-channel mixer with diode distortion from scratch
Вставка
- Опубліковано 2 тра 2022
- Support the channel...
... through Patreon: / moritzklein
... by buying my DIY kits: www.ericasynths.lv/shop/diy-k...
Working simulation on falstad: tinyurl.com/yjhy8ee9
In this episode, we're building a basic DIY mixer with a slight twist: built-in diode-based distortion. Probably a good project for beginners. If you want to build along, here's the bill of materials:
2x TL072 dual op-amp
2x 1N4148 diode
3x 100k potentiometer
1x 20k precision trimmer
8x 100k resistor
1x 27k resistor
3x 1k resistor - Наука та технологія
![ОРБАН приехал к ПУТИНУ и "отчитался" о поездке в Киев 😁 [Пародия]](http://i.ytimg.com/vi/_0ukDovOWq8/mqdefault.jpg)
IMO the best thing about your videos are the music demos of the gear you’ve built, reminding everyone what we’re building these modules for
Eit👌🏽
Because it's easier to learn how opamps and diodes works than practice a real instrument with a metronome everyday of your life since childhood
@@jstro-hobbytech I don't think you need to practice with a metronome every day of your life to be a good musician.
@@alvin_row I'll give you that. Some people are just natural but there is required discipline. I'm sorry I can't validate electronic music as valid and I'm sorry as I know it brings alot of people happiness. I was being a troll though and I am sorry, I was being an idiot. Honestly.
@@jstro-hobbytech Aww, what a cute superiority complex you've got there.
You beat yourself in every video, Moritz. I'm still stunned every time I watch your lessons. It is amazing how clear and peaceful you explain every concept. I've learned more in your videos than in my Electrical Technology class in college with a so-called professor... THANK YOU! Humans like you make the world move forward.
He really does an amazing job explaining, narrating and teaching.
that intro jam is fire!
This is great. Talking through hand drawn diagrams on dot grid paper is very beautiful and engaging.
Love your videos, very clear. One pedantic point, is this diode clipping type is normally termed hard clipping. Soft clipping is normally in the feedback loop of an opamp and adjust the gain applied rather than chopping off the top.
the best DIY teacher on the internet strikes again
Excellent vid! There's really nothing new or innovative to be said about the design of an active mixer, but the way you explain it is wonderful! Due to the way you provide tidy explanations of how things work on the basic level, accompanied by examples, I now understand, among other things, why my passive resistance mixers have always resulted in signal loss, and why an inverting buffer on the output side of a resistance mixer fixes this issue. Fun moment: when you were explaining the addition of the buffer, and you said you were using a TL072 chip, I wondered, "Why does he need a dual op amp, instead of using a TL071?" Then, when you made the other op amp into an inverter, I literally said out loud, "And that's why you use a TL072!" 😆 I'm not much into modular synthesis, but as a multi-instrumentalist, I've long sought a way to mix instrument-level signals on stage. While this mixer still wants line-level signals on the input side, I think you've provided me with enough information in this single vid to understand what I would need to build. And that's saying something, as I've been trying to work this out for years! Liked and subscribed.
BTW, one thing I would have liked to see is the effect of turning down the pot on the clipping circuit, shown with the sawtooth wave on the oscilloscope.
this is by far the best explanation of building a mixer I've come across... thank you!
I need a full version of that demo track. Awesome tutorial.
The algorithm gods have blessed me today. This was absolutely phenomenal! Can't wait for more, subscribing now!
You are a genuinely good circuit design teacher! Circuitry feels like the Backrooms for electricity to me.
As somebody whose electronics background was a simple class in high school (that I don't remember anything from) but who is otherwise familiar with soldering and tinkering with stuff, this explanation is great. Very clear and easy to understand for a beginner. Now I'm trying to wrap my head around how to adapt this into a matrix mixer, but struggling. It would be great if you could do a follow-up to this video for making a matrix one.
What a fun tutorial. Even as simple as this is, there's a lot of fundamental details that are explained without making you feel dumb. Thanks!
this is such an excellent resource! seeing the different iterations of the circuit and getting an explanation of how each block works is a huge help. thank you for making this, so glad i came across your channel. i started getting interested in audio circuits a few years ago but got frustrated because i felt like i wasn't actually "getting" it, just blindly copying existing guitar pedal circuits. but i might have to go dig up my breadboard again.
Oh man, I have lots of things to sort out but when I finish Im going back to learning from your videos! Im in my 30s and finding learning new stuff very difficult but alwayys wanted to know how to build circuts and how they work - ypur wideos are great help for me and fantastic gateway drug for electronics. Thank you man!
We are all on the same boat
DUUUUUUDE!!!! I'm in the exact same boat! In early 30's with kids and have always been fascinated bv electricity and circuits but never took the time to learn about them. But once I dipped my toes in, I'm ADDICTED!!! This channel has been an amazing wealth of info and explains the whole process and WHY,, for building fun circuits!
We got this dude!
if you want to learn you need to start at the basics. its a very long way until you have the foundation to fully understand these circuits and to analyse them
Don't wait till you're in you're forties to start learning those new things. Take it from me.
Anybody watching this video should have a basic grasp of entropy. Your brain will get worse from here on. Best case scenario, you loose your marbles slowly, gradually dissapearing into madness. Worst case... not even worth thinking about, buddy. So i say learn everything you possibly can right now, and build the highest mountain of knowledge to slide down as you age. No matter if you are 30, 40, 50, 60, take comfort in the undeniable fact that whatever physical state you are in today, everything will be worse tomorrow (presuming you are so privileged)
Moritz does it again! Your videos help me a lot. Thanks for taking the time to share these lessons.
One of the most criminally underrated channels I've ever come across. Fantastic as always
Totally agree :)
@@AnalogDude_ I don’t agree- maybe he is not an engineer with 40 years of hardcore experience, so there might by some error and simplifications. But I would never call it misleading.
Such a lovely demo in the beginning! 😍
Not only did I get to hear some great acid but I got the best explanation yet on soft clipping. Can’t wait to build this one. Wish my electronics teachers had been producers too!
This is so well explained, well done
It was a pleasure to learn that much! Thank you. I am looking forward to dive in into your videos!
Shout out to the LEDs and caps still patiently waiting for a chance to play.
Fantastic narration of the concepts and practical assembly.
Fully enjoying this series! Perfect edu for my brain :) That sweet jam really adds allot to the inspiration ✨
thanks for the great explanation for the mixer. The op amp is set up in a summing amp mode to avoid the passive mixing. Very good :)
This was excellent. Thank you, Moritz.
Really interesting Moritz, off to build a soft clipper now! Lovely clear explanations as always
Thank you so much for your video's, I always wanted to learn to build my own synth and your channel has basically everything I need to know. Thank you!🙏🏾
Excited for this series
Awesome gonna try and build this.
Your demo is dope!
I think this might be the fifth time I've watched this. Every time I glean something new. Thanks MK, ultra cool. You're a really good communicator. (Never built this actual circuit by the way, just learnt a lot)
You completely fooled me into thinking you had a 303 in that first tune.
Man your videos are fantastic! Thank you for making this. I've been wanting to make a Pocket Operator Output Mixer for a while now. Might have to give this a try.
Really looking forward to your stereo mixer discussion.
You earned a Patreon subscription from me. Nice work 👍
Thank you! This is easy to follow and understand, definitely gonna make a mixer now
Absolutely brilliant for a novice like me...so well explained👍😃
You are just so dang good at this.
Finally I get how diode clipping works! Thank you 🙂
your channel is a gem. thank you!
Holy cap that jam is a banger!!
I subscribed in the first minute, great work 👍
Stereo sounds really nice!
Hi! I used to use the TL072 in my own pedal designs, very nice opam :D you can alsp use other diodes, like LEDs or germanium if you find them, to change the kind of effect you get from the clipping stage. Thanks for this amazing video 😀
Really liked this tutorial
Sounds beautiful
great track!
Thanks for all you provide the community. Also. A sucker for crunchy acid house. The demo track slaps. Might have given me RD9-GAS.
I have never built one using an opamp, but I see the prinsiples are likevise using transistors. Interesting to (finally) seeing a explanation of how the inverse (second) opamp works. Nice video.
Awesome video
Very cool stuff! I hope that one day you will explain how to build an EQ from scratch.
Love these videos. 😃
Brilliant explanation thanks.👍
that intro song is super good, great video :)
Perfect Thank you again.
the song was extremely delightfull
That intro song 🧠🔥🔥🔥
Great video! But what exactly do the white green and red cabel in the powerrails each go to? im a bit confused here
Placing the soft clipper after the mixer means that if you mix waveforms that aren't closely harmonically related you will get a lot of intermodulation distortion, producing all kinds of harmonically unrelated frequencies. Of course, sometimes you want that, like with distortion on electric guitars. But then you usually play power chords, with a fifth between the two notes to go through distorion together, so they are really closely harmonically related to avoid too much intermodulation distortion. Of course, electric guitar distortion can be a lot more nonlinear than a soft clipper.
But I think that the soft clipper could be really useful to have before mixing. If you have a single melodic voice then it will be almost periodic, and then the soft clipper will mostly just make interesting changes to the harmonic spectrum, especially if it changes volume.
Also, I think that it could be usedful to have a bigger than 20 k pot to ground coupled to the diodes? At the 20 k setting, assuming the diodes connect, the incremental voltage change will be 1/6 of the voltage change at the input (voltage division 100 k 20 k). That's definitely softer than clipping to one diode drop, but I think an even softer clip could be useful as well? Maybe a 100 k pot at least?
Great video mate! Really appreciate what you've done with these series of videos.
It is my understanding that EQs are be simple circuits, perhaps that would be a interesting addition to the simple grit mixer?
good idea! yeah, a three-band EQ should be easy enough to pull off. i‘ll add it to the list!
It’s a great idea, and yes they can be quite simple (basic RC) - glad Moritz is onboard with it.
Nice!
super cool.
You could create an AVC type feedback voltage from the inputs with adjustable slew rate control.
Then connect that to a couple of op amps driving the clipping diodes, clip level & AVCFB is now driving the op amps.
Now it will dynamically track and clip the input level. You could even add clip & slew CV's.
Make a music video! This sounds so good!
The demo from the beginning is a mover! Where we can hear more of your musical work? As for the presented synth concept I wish to thank you! It is of high value, as always!
thanks! currently i just have some old stuff up on soundcloud, but i'm planning to release more music once the erica synths collaboration is through.
Great stuff, really informative. How about as one of the advanced features you add VCA control (per circuit in a previous video) rather than/in addition to fader pots? Perhaps also VCA controlled panning. Badass mixer!
Adding a Tube stage might be awesome
This is extremely cool. Do you have a bio? How did you learn and how long have you been doing the music and the circuitry? I'm a junior EE and it's all still pretty daunting but this is very inspiring.
We need the banger pls
I stripboarded this and made a 6 ch version. I couldn't figure out why the distortion was awful until I realized I missed the 100k between the two opamps, doh! Very easy and nice
What voltage for opamp and diode values? Thanks
Cool video, I'm wondering if it is possible to integrate fx loop on it, so each signal can have a fx.
The averaging inputs volume problem was kind of interesting. Makes me wonder if "jumping" inputs on a guitar amp works the same way.
You seem super cool just from the opening 15 seconds
Can you please do a video showing how an active splitter would work?
king
hey, thanks for enlighting us. you mention in the video, that you will occure the panning topic in an other video. did you so far? or do you know a good reference, that is easy to understand/read about panning / voltage controlled panning circuits? thank you
Is this not hard clipping as it's diodes to ground? Soft clipping would normally be in the feedback of a opamp. At least that's how it is in overdrive pedals, I'm still learning synth stuff.
clipping is considered to be "hard" when the signal is strictly cut off at the clipping threshold, producing flat peaks with sharp angles. this sounds really harsh and digital, for lack of a better word. on the other hand, clipping is considered to be "soft" when the signal can slightly push past the clipping threshold and the peaks are rounded. this sounds warm and analog.
since diodes open up gradually as the voltage applied to them increases, my design produces rounded peaks as there is no hard clipping threshold. (still, if you really crank the volume of the signal going into the clipping stage, the effect will get less and less "soft".) check it in the simulator: tinyurl.com/y4tvpuzl
I love this! cant wait for the Panning video and using stereo Left and right. this is a mono Mixer right?
yup, this is strictly mono!
Im in love with you ✨💕
Hi, I'm trying to go for the adjustable mixer, skipping the last opamp because I'll use it as an audio mixer and want to save one op amp to make a gain knob.
I'm facing a weird issue. The mixer seems to not working until I remove the connection between Non-inverting input and ground... In this case, it's seems to work fine. Any idea why ?
I mean, it's working so I'm fine with this solution but I would like to understand if there is any reason + wanted to know if it's safe for the components and the circuit ?
If you used leds instead of diods, could you somehow use a light sensor to compress the signal?
i have a little question, does the signal get at half the volume when one of the channels is sitting at 0 if i dont have an opamp after? thats because i think for me it migh be easier to just go to an audio interface and amplify the signal there
The clipped drums sound so fffff punchy damnnnn
Ah I didn’t experiment with both out puts, I’m just trying to use the build without distortion and making for guitar looping etc, can you explain how I could implement both of these outputs bro?
presumably the supply voltage for the op-amps is +/-. Is there any way to generate a +/- from a single power supply?
This is exactly what I needed. Your videos are so easy to follow!
Question though, I don't necessarily understand some of the terminology/electrical theory. Do you have a recommendation of a site to get the basics down?
you could try reading the manual to my DIY VCO kit - it‘s very much intended for complete beginners and explains all the basics in detail: www.ericasynths.lv/media/VCO_MANUAL_v2.pdf
@@MoritzKlein0 thank you so much!
Request. A 16 channel summing mixer. I have no experience in circuits
Filthiest demo by far, need a longer mix 💯
Right?! I need a full version of that demo song
that's a tune tbf
I have built this but i still get both inputs coming in regardless off my pots position im using 10k will it make a difference to use 100k?
Hi friend. Is it possible to have 3 outputs from this setup ? For line 1 line 2 line 3
how scalable is this? could i make it a 6 channel mixer by just adding more inputs?
I had a question. If i have 5 inputs with 5v amplitude in phase, for output i have -25v. But i had just +/-15 v in power supply. I think it will have distortion. How to get rid of it?
where can i find the 1/4 inch jack sockets? Wheres the best place people order from in general? I ordered everything in the description off some site called guitar pedal parts but they didnt have anything related to the 1/4 jack socket i believe
Depends what you're wanting and how long you want to wait for it, really. I'm going to assume you're American - if you're not, then find someone in your country that works with electronics and ask them.
If you're buying stuff and aren't worried about iffy quality or fakes, you can buy stuff off Ali Express or eBay. This is a good option for buying cheap simple components (passives, discrete semiconductors, etc.), certain supplies (wire, prototyping boards, etc.) and physical devices like jacks and knobs. Modules, knock-off microcontrollers, and ICs that are cheap and you don't care much about are good as well. Don't buy anything for serious projects or for production from these places. Bear in mind that stuff from Ali Express often takes a month or two to get to you, and might get lost along the way. Don't expect good customer service.
Then there are the mid-tier distributors like Jameco and a million others on the 'net. They're American companies that resell mostly stuff they get from China. These are sites that are more expensive than eBay or Ali Express, but you're probably going to get your stuff quickly and it's less likely to be fakes. I like to get my ICs from places like this.
For the stuff that you want to be 100% sure it's genuine (or stuff that's hard to find), there's the big boys - Mouser, DIgikey, Newark, etc. These companies buy directly from the manufacturers. They're not cheap, and they're really intended for professionals, but they're more than happy to sell you a handful of 555 timers if that's what you're into.
There are a few items you don't want to cheap out on. Buy high quality breadboards - they last a long time (assuming you don't catch them on fire) and you want to be able to trust that your connections are tight. Solder, solder paste, solder wick, rosin, etc. should also be decent quality.
Wouldn't you want to make the clipped/amplified op-amp input on the inverted output from the input op-amp? Otherwise the "fuzz" output is inverted.
Hey Moritz, even rewatching your explanations of how these circuits work, I feel like I'm still missing something that'll help me understand it. Try as I might I've never "got" how circuits actually do what they do. Any recommendations for books or online series to watch to really learn it from the bottom up?
did you watch my DIY VCO series of videos? i feel like i went much slower and used easier analogies there, maybe it's worth a try. other than that: i really recommend playing around with a circuit simulator (e.g. www.falstad.com/circuit/circuitjs.html ) - start simple, think about what you want to achieve (passive mixing might be a good starting point), set up a simple circuit and see what happens.
How can it be powered? Would a 9V battery be ok?
Can I also replace the precision trimmer with a potentiometer, just to have a bit more of knobs that I can turn?
sure! that way you get something like a ratio control for your limiting stage.
Am I able to use a TL074 for this instead of 2) TL072’s? I am still very new to this and any help is appreciated. I really enjoyed the video and explanations, so thank you. Subscribed and looking forward for more🤙
yup, TL074 will work just fine!
Thank you for letting me know. Also, is this circuit able to run off of a 9v one spot?
what if i have 3 inputs and 3 outputs all inputs going to every output but each output individually controls the inputs volume without signal interference?
danke mann! jetzt kriegen alle meine freunde nen gritty mixer von mir geschenkt:)