does anyone know where i can get the S-trigger out cable for my MicroMoog? i have the S-trig in thats used to trigger the Moog, but i want the cable that allows me to trigger WITH my Moog. i cant find these anywhere… ![]()
You are wanting the female or the male? Synthesizer.com makes a male V to Strig cable that will allow you to fire Moog modules like the 921 VCO and the Envelope Generators and the Sample and hold.
You are wanting the female plugs so that you can fire your envelopes on the Micro right? Maybe Kevin has one and if not then I know that modusonics has the part that you need.
EDIT: MODUSONICS IS NO LONGER IN BUSINESS DUE TO INSTANCES WHERE HE HAS FAILED TO RETURN ITEMS TO CUSTOMERS AND HAS EXTREMELY DIFFICULT TO REACH FOR SEVERAL YEARS NOW.
Eric
no, the cable with the socket not the prongs. for the jack in the output section
I’m guessing that you want to go from an S-trig out to a V-trig in?
If so, that direction is more difficult to make than going the other way.
The S-trig is just like a switch to ground. It produces no voltage.
If you need a V-trig, the voltage has to come from somewhere.
When I’ve made converter cables for Moogs, they have one plug that goes on the S-trig, another that plugs into an accessory power jack and one for the V-trig out (actually a gate signal.)
That’s the reason you don’t see so many of these adaptors out there.
They need to get power from somewhere. ![]()
ooohhh ok, ijust figured it was kinda like the other cable but with the female end on the cable. because what i want to do is send the trigger to start a sequencer when i start playing… would i be able to use the envelope out of the MF101 to do this?
If im not mistaken, and if I read the manual properly, then if you had a 1/4th plug with the Moog adaptor on the other side, then your guitar woudl be able to send a trigger signal. If Kevin is right, and Im quite sure that he is then I woudl be wrong to assume that since there is no voltage from the guitar, HOWEVER perhaps what Im thinking is that the male tips on the Micro…they can be closed with a nickel. Just touch the wires with something like a nickel and that shoudl besufficient to fire the envelopes. That kind of trigger (from what I remember reading in the manual) is easy to close.
Does that sound right to you Kevin, or can you point me back int he right direction?
E
Edit:
Now that ive thought about it a little further, a gate signal is +5 volts right? So the envelope output woudl be a varying voltage that could be turned into a +5 gate signal with the mixer of the cp251.
Right???
Eric lol
Gate signals vary, but generally you want at least 8 volts and more like 10 or 12.
Still, I’m not sure everyone’s communicating fine here. ![]()
Colorform said “S-trigger out cable for my MicroMoog.”
So that’s a trigger coming out of his Micro when he plays the keys.
If that signal is to be used with another synth like an Arp or Oberheim (or whatever), it has to be converted to a V-trig or gate.
That requires a powered converter.
Going the other way (V-trig to S-trig) requires no power at all.
A gate signal has voltage and can make a transistor close to ground.
That’s the same thing as an S-trig: a short to ground.
So Kevin, Can you make one and how much?
Thats the real unanswered question here lol.
E
Here is a text file I downloaded from somewhere, converted to GIF.
Gets power from a 9v battery.

Yeah, that’s a basic circuit.
One thing though, a 9v battery isn’t recommended or driving Arps.
While they may trigger at that voltage, their peak env voltage is usually derived by their gate-in voltage.
So hotter gates make hotter envs.
With other synths, it might not make much of difference.
But as this converter battery dies, an Arp might stop working or get quieter, etc.
My price for something like this?
Probably about $80 or something.
It can be done MUCH more cheaply, but I only have Switchcraft plugs, Mogami wire and that level of parts here.
Some whiz kid with Radio Shack parts could do it for less than from me.
Cheapest would be to mod the Micromoog for a gate out.
You might even reuse a jack you normally don’t use and just add the parts necessary.
cool yeah i have a friend that builds fx pedals and such ill have to see what he can do with this, specially since it is his stuff i want to trigger lol. but theres still the problem of finding the proper s-trig plug. do you sell just the plug part Kevin, incase my friend cant find one?
Those plugs are very common and currently made by no less than 4 manufacturers.
Try below… ![]()
sweet thanks!
I have a question related to this topic.. hopefully someone (Kevin?) will see this:
If you have created a S-trig to V-trig adapter, does the minimoog or micromoog produce an S-trig when you play a note on the keyboard? So you could plug into the s-trig and when a note is depressed, the s-trig on back is shorted? Also, if you are wanting to both trigger a gate on say a sequencer and receive a s-trig signal from the sequencer, (a Roland CSQ-600 in my instance) could you somehow use the same s-trig jack on the mini or micromoog, or is this a one way (in only) connection? If it is an “in only” connection, what connection would you use to create the s-trig out that is then converted to the gate and on into the sequencer (or controlling a gate in on another synth)?
I don’t know about he particulars…better wait for Kevin but one companies gate might be -5/+5 where another might be -10/+10.
As long as they are compatible you shoudl be able to trigger something like that.
But you can also short the S-trig by putting a nickel on there too. Fire your own evelope generators at will with a nickel lol. SOmething like that. Im really not qualified to answer that question.
If you have created a S-trig to V-trig adapter, does the minimoog or micromoog produce an S-trig when you play a note on the keyboard?
A Micromoog has an S-trig out (and S-trig input), while a Mini only has an S-trig in.
But if an adaptor is used on a Micro, it will fill that single S-trig out jack and no other trigger output will be available.
On a Mini, it provides no S-trig out, but actually works internally on V-trigs both in and out.
The single S-trig input jack is converted by the Mini itself for use as a V-trig internally.
So if a Mini was modded, it’s completely possible to have V-trigs in, out and even keep the S-trig input or add an S-trig output.
So you could plug into the s-trig and when a note is depressed, the s-trig on back is shorted?
On the Micro, yes.
However technically the S-trig is going from a high state to ground.
That’s the same as shorting it for most practical purposes, at least for an input.
As an S-trig output however, one actually gets a constant voltage on the S-trig out with it going to ground during a key press.
Not sure if this helps your understanding, but it’s a tech explanation of what happens.
It’s actually an inverted S-trigger.
The “S” stands for short or switch, which is what the early Moog modular keyboards provided via a relay (a switch.)
Also, if you are wanting to both trigger a gate on say a sequencer and receive a s-trig signal from the sequencer, (a Roland CSQ-600 in my instance) could you somehow use the same s-trig jack on the mini or micromoog, or is this a one way (in only) connection?
Generally S-trigs can’t be multed reliably.
Each connection added can, depending on the synth, raise or lower the threshold for triggering properly.
If it is an “in only” connection, what connection would you use to create the s-trig out that is then converted to the gate and on into the sequencer (or controlling a gate in on another synth)?
My advice is to avoid S-trigs altogether.
Have any and all S-trig equipped instruments modded to send and/or receive V-trigs.
You’ll have less headaches interfacing with other gear.
Sorry if this answer suggests additional expense for a tech.
But as your system grows you’ll appreciate not having headaches when interfacing with other, non-Moog gear.
It should also be noted that a Minimoog model D is not at its best when controlled via the OSC CV input and the S-trig in.
Incoming CVs to that jack do not get processed through the Moog’s glide, nor presented to the orange filter keyboard tracking switches.
When I mod Minis for external control, I will usually make incoming signals replace the keyboard signals.
That is, keyboard CV is replaced by external CV and keyboard gate (a V-trig), replaced by an external V-trig input.
That way very little is actually changed in the Mini and all external control is treated as if it was the Mini’s keyboard providing them.
The Mini doesn’t know whether it’s a keyboard or external control then.
Wow. Thanks Kevin. I was missing the point about the Mini because internally it utilizes V-trig anyway? How difficult would it be for a local tech to perform this mod? What about me? Minimal soldering skills, etc.
And, would the rest of the synth remain the same, the S-trig and other jacks, or would you simply be replacing those jackss to perform the Gate and CV functions? I’m concerned about reversability and originality but in particular I do not want to drill the back panel as this is an old Mini and I’m wanting it to remain otherwise original, which is why I was asking about all these adapter plugs in the first place.
This also begs the question: Why did Moog use the S-trig system in the first place, if internally they’re V-trigs?
Also, you said "On a Mini, it provides no S-trig out, but actually works internally on V-trigs both in and out. " Does it work this way on a Micro as well; that is, does a Micro utilize internal V-trigs both in and out, as well?
Because you could use something as simple as a footswitch (requires no power) to trigger an S-trig system. You can’t do that on a V-trig system without an active circuit and a power source.
Also, you said "On a Mini, it provides no S-trig out, but actually works internally on V-trigs both in and out. " Does it work this way on a Micro as well; that is, does a Micro utilize internal V-trigs both in and out, as well?
That’s pretty much true on any analog synth.
Yep, I remember back in the 70’s wiring up one of those magnetic door switches to the S-trig jack on the Mini.
Patched up a loud pink noise sound to go off when someone opened the door. DIY switches were easy to make. I also had an automotive toggle SPST, that the blades lined up with the Cinch jack. The lever stuck up a bit just behind the wood rail on top,and would just flip it to get the Mini to drone.
Another advantage of the S-trigger system is it is bi-directional. It not only recieves an S-trigger but also sends one. Tried it on my Mini, Modular, Rogue, Prodigy. Connect a male to male 2-prong Cinch from your Mini to a Prodigy and either keyboard will trigger the other, so they are not only inputs but also outputs too! I have my Prodigy and a Taurus 2 module triggered together this way. Play the Prodigy keyboard, it triggers the Taurus 2, and if you hit the auto-trigger on the Taurus the Prodigy will sound. The Micro/Multimoog differ from this arangement, probably due to the S&H Auto mode circuit.
Not many realize these are indeed bi-directional triggers. Try it!
As a service to Moog modular owners, please don’t try this… ![]()
Not many realize these are indeed bi-directional triggers. Try it!