# MULT X AT (KOSMO Format) **URL:** \ **Category:** DIY STUFF\ **Created:** [April 11, 2020, 3:18am UTC](https://lookmumnocomputer.discourse.group/t/mult-x-at-kosmo-format/581 "2020-04-11T03:18:26Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![d42kn355](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/d42kn355/32/273_2.png) [@d42kn355](https://lookmumnocomputer.discourse.group/u/d42kn355)\ **Post date:** [April 11, 2020, 3:18am UTC](https://lookmumnocomputer.discourse.group/t/mult-x-at-kosmo-format/581/1 "2020-04-11T03:18:27Z")
Basic MULT + a single Attenuator in KOSMO Format. 1 x 6 or 2 x 4 (if nothing is plugged into the first jack in the second row it normalizes the other 3 jacks) Single I/O with Attenuator. (B50k) ![image](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/6/6a118690c001e17d8a6b05a415f16240669b3098.jpeg) ![image](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/2/279b8e15e7e42e4e8daad237efda8c1caf95f6b0.jpeg) ---
**Author:** ![Caustic](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/caustic/32/15588_2.png) [@Caustic](https://lookmumnocomputer.discourse.group/u/Caustic)\ **Post date:** [April 11, 2020, 4:37am UTC](https://lookmumnocomputer.discourse.group/t/mult-x-at-kosmo-format/581/2 "2020-04-11T04:37:47Z")
ooh is that a passive mult? how well does it work? ---
**Author:** ![d42kn355](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/d42kn355/32/273_2.png) [@d42kn355](https://lookmumnocomputer.discourse.group/u/d42kn355)\ **Post date:** [April 11, 2020, 2:03pm UTC](https://lookmumnocomputer.discourse.group/t/mult-x-at-kosmo-format/581/3 "2020-04-11T14:03:21Z")
The MULT and AT work great, but the Normalizing aspect doesn’t seem to work. I have never really used Cliff Jacks before but found a diagram where is showed the second pin in being the Signal 2/Switch but idk why it isnt working. ---
**Author:** ![ChristianBloch](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/christianbloch/32/56_2.png) [@ChristianBloch](https://lookmumnocomputer.discourse.group/u/ChristianBloch)\ **Post date:** [April 11, 2020, 2:38pm UTC](https://lookmumnocomputer.discourse.group/t/mult-x-at-kosmo-format/581/4 "2020-04-11T14:38:23Z")
On those jacks you can see when you plug in which parts are switched. The two contacts that lift up are connected and the other two only connect when nothing is plugged in. ---
**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:** [April 11, 2020, 3:14pm UTC](https://lookmumnocomputer.discourse.group/t/mult-x-at-kosmo-format/581/5 "2020-04-11T15:14:54Z")
One thing that can be confusing on diagrams of jacks is whether you’re looking at the front or the back. I was using the Tayda 1/4" jacks for the first time yesterday and resorted to plugging in a cable and checking with a multimeter. ---
**Author:** ![d42kn355](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/d42kn355/32/273_2.png) [@d42kn355](https://lookmumnocomputer.discourse.group/u/d42kn355)\ **Post date:** [April 11, 2020, 3:39pm UTC](https://lookmumnocomputer.discourse.group/t/mult-x-at-kosmo-format/581/6 "2020-04-11T15:39:15Z")
i think it’s a stereo cliff instead of a switch cliff… like, that second step is hitting ground instead of 2nd tip because it may be expecting a ring… lol. I went off of this pic ![Blog-Jacks_01](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/c/cd99536a212145e077721d242f0d165c4a1c1f77.png) They are the 6 pin versions (i still have no clue how I ended up with a bag of 30 of them… lol) I followed AI Synths MULT Schematic and connected Signal 1 Pin to the Signal Pin 2 of Channel 2 but it doesnt seem to work. ![Screen-Shot-2016-05-28-at-6.58.51-PM](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/1/1d627bad64d346622de81c49066cc6a12dff6e8e.png) Like I said, I might have the wrong kind of jack lol. I know there are like 10 variations to my type of cliff jack and I do not remember where I got mine. Are the normal Jack sockets we all use on KOSMO PCB’s Switched? I could replace that first jack with one of those if it is lol. ![switched jack](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/a/a666771fcb496bbd6f7318de8282133b6ebecad2.png) I would connect that Switched Signal to Pin 4 right next to Pin 2 correct? ---
**Author:** ![ChristianBloch](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/christianbloch/32/56_2.png) [@ChristianBloch](https://lookmumnocomputer.discourse.group/u/ChristianBloch)\ **Post date:** [April 11, 2020, 3:45pm UTC](https://lookmumnocomputer.discourse.group/t/mult-x-at-kosmo-format/581/7 "2020-04-11T15:45:01Z")
For stereo, just don’t connect the middle pins to anything and they work the same as if they were mono. The box type is switched too. You may want to just get out the multimeter and check what’s connected to what. ---
**Author:** ![d42kn355](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/d42kn355/32/273_2.png) [@d42kn355](https://lookmumnocomputer.discourse.group/u/d42kn355)\ **Post date:** [April 11, 2020, 3:48pm UTC](https://lookmumnocomputer.discourse.group/t/mult-x-at-kosmo-format/581/8 "2020-04-11T15:48:48Z")
Oh that much I know haha. Was just digging through orders in my emails, these are just stereo unswitched… lololol That would be my problem. 🤣 😂 And sweet, I’m going to switch that jack out to an actual switched jack. I’ll report back when its working the way i wanted it to. lolol Everything else works just fine, it mults the way it should mult, and the attenuator will pull a full signal down to nothing 😃 ---
**Author:** ![ChristianBloch](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/christianbloch/32/56_2.png) [@ChristianBloch](https://lookmumnocomputer.discourse.group/u/ChristianBloch)\ **Post date:** [April 11, 2020, 4:04pm UTC](https://lookmumnocomputer.discourse.group/t/mult-x-at-kosmo-format/581/9 "2020-04-11T16:04:46Z")
> [@d42kn355](#): > > these are just stereo unswitched Yeah, that _does_ explain it 🤣 ---
**Author:** ![d42kn355](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/d42kn355/32/273_2.png) [@d42kn355](https://lookmumnocomputer.discourse.group/u/d42kn355)\ **Post date:** [April 12, 2020, 5:17pm UTC](https://lookmumnocomputer.discourse.group/t/mult-x-at-kosmo-format/581/10 "2020-04-12T17:17:39Z")
![image](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/c/c6cdcb8ef0badc7004b0c2af40f36c56b4c9f816.jpeg) Fixed it. Now it does as originally intended 😃 First times I’ve ever used a switch on a jack in DIY! 🙂 ---
**Author:** ![zorch](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/zorch/32/5586_2.png) [@zorch](https://lookmumnocomputer.discourse.group/u/zorch)\ **Post date:** [November 21, 2020, 2:59am UTC](https://lookmumnocomputer.discourse.group/t/mult-x-at-kosmo-format/581/11 "2020-11-21T02:59:24Z")
I am going to be working on my multi soon, so I will likely be revisiting this thread!