9V MS20 VCF

iloophao · Post by **iloophao** » 25 Apr 2009, 16:18

I first time to do it, i don't know is yes or not work

iloophao · Post by **iloophao** » 25 Apr 2009, 17:42

i want make a filter like MoleS20r from the squarewave parade

How can give me some idea？

progkraut · Post by **progkraut** » 18 Jul 2012, 14:42

Hi!

I've done a quick'n'dirty perfboard layout. All constructive cristism is welcome!

Enjoy!

progkraut · Post by **progkraut** » 19 Jul 2012, 12:53

added a simple LFO (with a saw/sin-switch)

atreidesheir · Post by **atreidesheir** » 19 Jul 2012, 22:57

Do you have any sound samples of the circuit in action?

Gila_Crisis · Post by **Gila_Crisis** » 06 Feb 2014, 10:53

I'm working on a MS20 filter based on the LM13700. I did a vero-layout and it uses a MAX1044 to work with +/-9VDC.
I'm following this schematic:
http://www.aleph.co.jp/~takeda/radio/img/VCF-scheme.gif
http://www.aleph.co.jp/~takeda/radio/MS20clone.html

as soon as the build is verified I'll post the layout.

Gila_Crisis · Post by **Gila_Crisis** » 07 Feb 2014, 10:49

here you'll find my layout for Takeda's MS20 VCF. I added a charge pump to use it as a stompbox with a standard 9VDC power supplies (also with -/+9V instead of +/-15V the filter works really well! but you can omit the charge pump part of course).

mingus77 · Post by **mingus77** » 13 Feb 2017, 17:33

Nice! Will Build this on vero board.
What is the trick to make a linked stereo version?

lelunain · Post by **lelunain** » 04 Apr 2018, 09:41

progkraut wrote:added a simple LFO (with a saw/sin-switch)

[ Image ]

Hello, i don't understand where is the alimentation on this circuit ?

snk · Post by **snk** » 04 Apr 2018, 20:08

Gila_Crisis wrote:here you'll find my layout for Takeda's MS20 VCF. I added a charge pump to use it as a stompbox with a standard 9VDC power supplies (also with -/+9V instead of +/-15V the filter works really well! but you can omit the charge pump part of course).

Hello
Thank you for your layout.
As far as i see, there is not LP/HP switch, right ? It is "only" the MS20 lowpass, not the hipass, right ?
Is there any layout with both filters in serial ?

Gila_Crisis · Post by **Gila_Crisis** » 18 Apr 2018, 07:53

snk wrote:Hello
Thank you for your layout.
As far as i see, there is not LP/HP switch, right ? It is "only" the MS20 lowpass, not the hipass, right ?
Is there any layout with both filters in serial ?

Hi, yes this is the LP part only, but you can easily modify it to have the HP as well. The layout is the same, you only need to change the input/output routing from/to the filter. With this layout I've build a unit with the MS2 HP > LP configuration and it works like a charme!

snk · Post by **snk** » 18 Apr 2018, 22:06

Hi, great, that's good to know : thanks !

Julav · Post by **Julav** » 10 Apr 2021, 09:39

Hello, thank’s a lot for sharing this layout! I am working towards my perfect pedalboard and this could be a great addition! I really like the CV-in option, what is the voltage range used to control this? Is this 0v/9v or -5v/5v or something different?

snk · Post by **snk** » 10 Apr 2021, 09:52

Julav wrote: ↑10 Apr 2021, 09:39 Hello, thank’s a lot for sharing this layout! I am working towards my perfect pedalboard and this could be a great addition! I really like the CV-in option, what is the voltage range used to control this? Is this 0v/9v or -5v/5v or something different?

-5/+5 afaik