# Yusynth Mixout, potentiometer question **URL:** \ **Category:** DIY STUFF\ **Created:** [February 22, 2023, 12:51am UTC](https://lookmumnocomputer.discourse.group/t/yusynth-mixout-potentiometer-question/5925 "2023-02-22T00:51:01Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![baptiste\_b12](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/baptiste_b12/32/23570_2.png) [@baptiste\_b12](https://lookmumnocomputer.discourse.group/u/baptiste_b12)\ **Post date:** [February 22, 2023, 12:51am UTC](https://lookmumnocomputer.discourse.group/t/yusynth-mixout-potentiometer-question/5925/1 "2023-02-22T00:51:01Z")
Hi everyone, I intend to make the mixer part of this module in eurorack and just for fun (and aestethic) I plan to put slider pots instead of standard level knobs (the panning CV and level will still be knobs). ![mixout-module](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/3X/c/7/c75edc27d5c133c8da49eeaf49aa7368abdde508.jpeg) [MIXOUT](http://yusynth.net/Modular/EN/MIXOUT/index.html) But as I’m looking to get all the components I need, I cannot find the 250k log pots anywhere… I’m then wondering why Yusynth has choosen this type of pots, is there any good reason to follow the schematis to the letter ? For other mixer I made, I’ve used basic 100k linear pots, does it change something if I used those 100k slider pots (which are easily available) ? When I will have all the components, I plan on printing my own circuit on copper, we’ll see how it goes 😉 ---
**Author:** ![analogoutput](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/analogoutput/32/29663_2.png) [@analogoutput](https://lookmumnocomputer.discourse.group/u/analogoutput)\ **Post date:** [February 22, 2023, 1:27am UTC](https://lookmumnocomputer.discourse.group/t/yusynth-mixout-potentiometer-question/5925/2 "2023-02-22T01:27:08Z")
(Link above is broken, should be [http://yusynth.net/Modular/EN/MIXOUT/index.html](http://yusynth.net/Modular/EN/MIXOUT/index.html)) It’s an attenuator with no fixed resistors in series. So there should be no reason you can’t replace it with a lower value — higher value could be problematic but lower is OK. Log or linear is up to your taste. So linear 100k should be fine. ---
**Author:** ![baptiste\_b12](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/baptiste_b12/32/23570_2.png) [@baptiste\_b12](https://lookmumnocomputer.discourse.group/u/baptiste_b12)\ **Post date:** [February 22, 2023, 5:47pm UTC](https://lookmumnocomputer.discourse.group/t/yusynth-mixout-potentiometer-question/5925/3 "2023-02-22T17:47:39Z")
Thanks a lot for your answer, I will do that then… 😉 Now, just to know, how does the VU meters work in the circuit ? In the schematic there is no information on how to connect it… (and what if I was to put just 1 VU to check it in mono? Is that doable ?) I see that [Vumnoo](https://lookmumnocomputer.discourse.group/u/Vumnoo) has done the module… Any advice to complete the module ? ---
**Author:** ![Jos](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/jos/32/151_2.png) [@Jos](https://lookmumnocomputer.discourse.group/u/Jos)\ **Post date:** [February 22, 2023, 11:38pm UTC](https://lookmumnocomputer.discourse.group/t/yusynth-mixout-potentiometer-question/5925/4 "2023-02-22T23:38:28Z")
If you are hesitant to decide between log or linear pots, then maybe read [Controlling Volume—log pots](https://e2e.ti.com/blogs_/archives/b/thesignal/posts/logarithmic-potentiometers) and/or [The secret life of Pots](http://geofex.com/Article_Folders/potsecrets/potscret.htm). And if you still do not know what to decide you can use the parallel resistor trick and add a switch between the parallel resistor and the potentiometer. That will give you the flexibility to choose for a linear or pseudo logaritmic response. ---
**Author:** ![SYNTHGUY57](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/synthguy57/32/14422_2.png) [@SYNTHGUY57](https://lookmumnocomputer.discourse.group/u/SYNTHGUY57)\ **Post date:** [February 23, 2023, 7:37am UTC](https://lookmumnocomputer.discourse.group/t/yusynth-mixout-potentiometer-question/5925/5 "2023-02-23T07:37:03Z")
you can posisbly use 100k log pot and on tab 3 add a 150 k resistor the what would go to tab 3 goes to the other end not soldered to tab 3. So your meter would see 100k + 150k = 250k basically and there you go 250k, and since using a log pot you should be good. I have done this for 1k pots needing to be a 1.3 k rating. Good luck and we are here to elp not hinder qauetions ---
**Author:** ![clarionut](https://avatars.discourse-cdn.com/v4/letter/c/34f0e0/32.png) [@clarionut](https://lookmumnocomputer.discourse.group/u/clarionut)\ **Post date:** [February 26, 2023, 11:55am UTC](https://lookmumnocomputer.discourse.group/t/yusynth-mixout-potentiometer-question/5925/6 "2023-02-26T11:55:21Z")
The VU meters connect to the output/monitor board - the connections are shown on the original circuit diagram and board layouts. You could create a mono signal to monitor by using an op-amp stage as an inverting mixer but this would mean that you could be significantly overdriving one channel even though the mono signal was still within limits. And a stereo meter means you can check the panning is working as expected. ---
**Author:** ![baptiste\_b12](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/baptiste_b12/32/23570_2.png) [@baptiste\_b12](https://lookmumnocomputer.discourse.group/u/baptiste_b12)\ **Post date:** [June 14, 2024, 9:06am UTC](https://lookmumnocomputer.discourse.group/t/yusynth-mixout-potentiometer-question/5925/7 "2024-06-14T09:06:33Z")
Oh gosh, it’s been more than a year that I started this thread… 😕 Sorry to answer just now, but better late than never 😉 It actually turned to nothing, mainly because the board I hand-made was not really well done… Then the drilling part didn’t go well either, and I have not been able to get any result through it. But it’s part of the process hahah Thanks to all of you to have answered my questions, I will make other output/mixer module in the future so, all the info here is precious for me!