How to make cheap modular synth modules-MS20 filter

For a while I've been wanting to make an MS20 filter and I decided to show the process. Never had money to buy modules that are 300 dollars or so! Its based on the schematic by Rene Schmitz but I use the LM13700 and its internal buffers. The sounds in the background track are all running through the finished filter.
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[@Afrorack]

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[@MeeBilt]

I instinctively punched the Subscribe and Like button 30 sec into the video, seeing you recycling the old computer chassie into a frontpanel 😎
Great build - love the background track too.

[@adomaspale]

As much as the build, the music behind it is also lovely - simple yet beautiful!

[@stuartchapman5171]

Great diy build and aesthetic.

[@System-1541]

I love your channel man! Educational and entertaining!

[@kunstssst]

I also cannot afford the outrageous price of modules. This is very inspiring indeed. Subscribed!

[@andewprod]

@MrTurningPointz agree, sys 100 by behringer has crazy price / quality ratio

[@_marlene]

this stuff is INSANELY good, your music and the video both. The engineering is just icing on the cake. You're a triple threat.

[@Gorgilakokinho]

This song is just awesome.

[@bluesgut]

Glad you are still making modules. I saw all your videos years ago and never remembered to subscribe. Now I have

[@Afrorack]

Thanks u

[@ArchetypalCat]

I don't know how I've missed your videos, but I'm happy to be here now --- what wonderful things you are doing! thanks

[@the_glove]

Rca jacks ! Genius !

[@akasickform]

This is dope

[@mikelebridgeforth189]

That's genius my friend

[@nilsqvis4337]

Not gonna lie, that delicious food caught me completely off guard

[@PerseusTraxx]

This has really inspired me...

[@i.ismail]

huge inspiration.

[@Satwamassive]

What an inspirational video! Superb 😍

[@grant_vine]

Amazing ingenuity

[@lirawhite5799]

Awesome afrorack man!

[@rreemmoorrii]

salute for your format , greet from indo

[@NostalgicRuckus]

Luv when these pop up on the notifications. 🙌🙌

[@Afrorack]

Thanks

[@stephenparry6811]

that's an impressive build & the soundtrack is awesome, love the way the filter creates those tones

[@wonderboy75]

Wow! Fantastic! 😻

[@angelos808]

legend

[@MouldySoul]

I'm dying at the sly shot of curry in there! Love it

[@davidjohnston5329]

I like the way you salvage components from old circuits. I do the same... old radios are a great source of film caps.

[@broklee]

Awesome video and music! Great when the filter turns into food

[@Afrorack]

Haha..thanks

[@eph_kni]

literally the coolest thing ive seen all year. the music and sounds, the look and background of your synth and music. all of it is the truth of artistry and expression and individuality.

[@woosix7735]

What a vibe

[@_marl3ne_]

dude....uhhhh this is GOOD

[@johngalvin6352]

Thanks Afrorack, love the tune midnight, just a suggestion, think about going into module production.

[@the2d]

I am a fan. Of sharpies and bare pots!

[@Ryannaut_g]

Arturia is a cool brand. I love me some Arturia. Great vid bro!

[@MattBaker1965]

Great hacker take on the power distribution. :) Nice work man.

[@ozerik]

You used the internal buffers!!!??!? Awesome results! I am trying to convince myself I can hear the difference, but I can't. Wonderful.

[@Afrorack]

The datasheet of the lm13700 has a VCF with a similar circuit like ms20 and they use the internal buffers...I understand the buffers have their quacks...but music is not brain surgery!!

[@williamhenrymeung1669]

f yea ! this is where its at !

[@jean-philippefalcon3238]

Awesome, it’s a great sounding modular synth you’ve build here, I’d love to here the spring reverb too. Thanks !

[@Afrorack]

Good idea..will put it in one of the videos

[@dnc23x]

@@Afrorack yes please!

[@jmd76family]

Inspiring!

[@dnc23x]

the background music is brilliant. respect!

[@user-kill666]

That's a very very nice build! Btw loved the power distribution bus! And also loved the analogy of rotating modules is like rotating food :)
I loved a lot of small details from this short but necessary video, it's great!

[@eyeago]

Very inspiring, thank you

[@TommasoPatacchini]

Blessed channel

[@XavierHoshin]

Congratulations, that's magnificent!

[@jongdonglu]

just found my new favourite channel! love your modular synth setup.

[@Afrorack]

Thanks

[@Dikkedimi]

Finally some TRUE eurorack nerd shit. Nice sounds, keep 'em up!

[@expensivenotes]

Lovely sounds and a cool build!

[@DetroitMicroSound]

Looks delicious. ❤

[@PORRFNK]

The food looks yummy :)

[@youjuhwan9697]

wait, you make all of your modules??? this is crazy!

[@Afrorack]

Not too crazy if u put in sometime...

[@youjuhwan9697]

@@Afrorack that's a great effort to put it in, I discover you through soundcloud document, You are amazing man!!

[@edgeof60]

Actually spending hundreds of $$ per module is crazy. Figuring out how to build your own for cheap is brilliant.

[@Digiphex]

Sounds great.

[@tamasgal_com]

Very nice, I really like your pragmatic style! Beautiful sounds :)

[@draaangus7753]

So good.

[@nicolasbava3467]

loved it, going to build it. Thank you dude, very much

[@marcosrobertsonofficial]

Cool! Did you also make the spring reverb module?

[@paulbryden-bradley7846]

Cool

[@RMMChicagoOfficial]

Dope AF!

[@vedabou]

Nice design for the EG. :D

[@YMNKmusic]

Cool :D I should try this filter from Rene Schmitz. The one from look mum is cool, but the resonance goes wild really fast!

[@Afrorack]

The resonance path goes from the output through an opamp...You could mess with the gain of that Opamp and see if it improves things..there's also the clipping diodes..mess with those too...add more diodes and see what happens...

[@jentabine9848]

You are a boss

[@andewprod]

Wow thats impressive! You are indeed a very creative person :D +1 sub!

[@mwatkins0590]

ive never smashed the subscribe button so hard before. Where do you get your schematics?

[@ciervonaufrago7422]

Dude what!

[@ewencousin]

magnifique!

[@kellenhess7246]

plz make a pt2399 echo

[@FAMExNUKEZZz]

I was wondering if there's any place I can listen to the song that was playing throughout the video

[@MartinMacabre]

Wowwww …👏👏👏👏

[@MrLombrose]

❤

[@xntricity6446]

Can i ask a silly question, My analog synth does not have CV however i want to build an external filter for it (Prophet rev2). If i built this module would it work with just audio connected to it (In & Out), nothing connected to CV? Cheers

[@Afrorack]

Yes the external filter will work but u will miss the functionality of CV...which basically is to automate the filter...the option is to do it with ur hands

[@xntricity6446]

@@Afrorack Excellent, now I understand why CV is there. Thanking you

[@yarnf]

I have been building my front panels out of masonite, but I think I'll have to buy a jigsaw and find some thrown out computer cases like you.
How much of your (electronic) parts do you salvage from junk vs. buy new?

[@Afrorack]

A mix of both...i use wires from junk yard car parts sellers..they are good quality and cheap...the panels also from pcs....the rest is from local electronic spares shops...then more specialised ICs...Amazon, Mouser uk...

[@royjacqvanstraeten668]

Were can you get the lm13700 i hope not you say aliexpr..

[@Afrorack]

Depends where u stay

[@royjacqvanstraeten668]

@@Afrorack europa..the Netherlands ...no originals to find..all absolete ..no texas instruments ..no RC only chinese

[@chikoavena3407]

Was the reverb tank the most pricey thing for your modular build?

[@brianbamanya2510]

😊

[@logimite7174]

how much did your full modular cost?

[@Afrorack]

Well I haven't kept track of all the costs since it's been incremental...and it's also been spread over several years...