Synton Fenix III - sequencer companion notes - 2

 This is part 2 of my companion notes for the fenix III sequencer.

 

 

Part 1 is here:

  Synton Fenix III - sequencer companion notes - 1 

Note that the patch points are colour coded.

+ Inputs = Black

+ CV out = blue

+ Bus in/out = yellow

+ CV step input = grey

 

+ It is NOT OK to interconnect the blue outputs

+ It is OK to interconnect black inputs

+ It is OK to interconnect any number of yellow outputs

       These yellow outputs are binary (gates ... >7V or <1V)

       If one or more of the interconnected yellow sockets is HIGH, then all will be HIGH.

------------------------------------------------------------------------

Buffer Modules.

This module operates only for Logic signals ... eg those from the Yellow Bus outputs .

A Buffer is a special Logic gate. It's a non-inverting amplifier.

 

It is recommended to use a buffer module when connecting the yellow Bus to a normal gate source or an input (such as the clock input) which has internal patching.

A buffer will turn a non-buffered output (yellow jacks) into a buffered output.

When in doubt it doesn't hurt to use a buffer. Its a safety module.

--------------------------------------------------------

----------------------------

 

The Master clock module controls the speed of the sequencer

 

The Clock frequency can be set by the frequency knob
and modulated with an external voltage at the FM1 and
FM2 input or by external Midi
 

There are 5 clock outputs:

Clk out, 

Out x 4

Out/4

Out/16

Out/32

 

 

The Clock outputs are I understand to be same voltage range as Gates .. that is ... 0 to +8V

 (need to confirm with a multimeter) 

If you want to connect the Fénix with an instrument based on S-Trigger (Vintage Moog 

or Korg MS 20 etc), you need an S-Trigger converter. 

If you want to use an S-trigger to control the Fénix, you can connect the S-trigger to

 the (-) input of the comparator and the output of comparator
can be used as gate. You'll have to look for a correct setting with the control knob.

The CV out is the CV of the Frequency knob. 

You can use this as an additional control voltage. 

The R/S and Reset inputs need Gates to work.

Anything larger than +5V is high

Anything under +1V is low

 ------------------------------------------------------

 

The 3 main sequencers (C1/B1/A1) have some unique input controls:

 

To clock the sequencers using an external sequencer you'll need

a +5 gate (or larger).

A signal larger than 5 volts is considered
high, and a signal that lower than one volt, low. 

The gate and trigger outputs produce such a signal.

Triplet & Duplet

To be continued...

Moog Model D - restored

 Thanks to Ed for restoring this baby for me.

Lovely job.

 

View this post on Instagram

A post shared by Synth Keyboard Repair (@elk_elektronik)

When I purchased this decades ago, it had lost its protective metal back so the internals were exposed to the elements. 

Ed & I searched for a suitable replacement, but we finally decided upon a bespoke acrylic back.

I really like that I can still see the electronics.

 

As this is an original MiniMoog D it uses S-trigger rather than the conventional V-trigger (used on most modern synths and on the re-issued 2015 Minimoog D ).

S-Trig just means that there is a constant voltage present before "the event" (such as the start of an envelope).

This is shortened to ground when the event occurs. 

 

The S-Trigger uses a Cinch-Jones connector

 

 

When the two prong plug is inserted into the S-trigger socket, the contour generators  are "on" continuously. 

You can connect this to an accessory foot switch for manual external triggering of notes.

 

There are 4 additional inputs:

Loudness, Filter, Oscillator pitch and what I think is a MOD. SRC. INPUT **.

The last input is I think a non-factory modification.

 

The original Minimoog had a foot pedal called a 958.

It supplied a continuous control voltage ranging between 0-5V

 

Any CV controller (with voltages in the range of 0 to +5V) can be used to control the volume of the output, 

the cutoff frequency of the filter (timbre) or the pitch of the oscillators. 

The input jacks use TRS (Tip/Ring/Sleeve) connectors with a current-limited +5V on the ring. 

The manual states that up to three may be used simultaneously to control all of these functions.

 

I've not tested this, but maybe something like a modern EP-3 will also work

 

 

I have a old Phillip Rees MIDI to CV device. I think they are discontinued now, but you should be able to find a modern equivalent.  Something like the Kenton USB solo or the Pro-solo works well.

Plug the V-trig into the Cinch Jones socket, and the pitch CV into the Oscillator socket.

 --------------

**

On the reissued 2015 Minimoog D you will find a MOD. SRC. INPUT 

Here a varying control voltage signal connected to this input jack can be used as a modulation source. Inserting a standard 1/4” cable into this jack breaks the normalled connection of the Noise modulation source, and any external control voltage applied will take its place. With no cable connected, this jack remains normalled, connecting the Noise send to the MOD. SRC. input, and NOISE can be selected as a modulation source 

--------------------------

  Links
+ Modular Clocks - Analog, MIDI , PPQN
+ V-trig to S-trig converter 

----------------------

https://www.elkelektronik.com.au/ 

https://www.facebook.com/elkelektronik/  

Youtube

Instagram

Moog, Korg & Yamaha trigger CABLE V-trig to S-trig

Some pics for making a S-trig to V-trig cable.
Useful is you don't have a Moog 961 conversion module
 + 961 INTERFACE 

tHIS  first cable uses two 1/4 inch jacks.
To convert V-trigs from a 960 sequencer to S-Trigs.

It will also work well to convert a V-trigger from a Eurorack clock (for example) to a S-trig.

This cable is also compatible with old Korg (eg MS 20) & Yamaha synths

 Just 3 components:
10K resistor
1N4148 diode
2N3904 transistor

 Bluetack is a easy way to hold the components together while soldering.

Prevent shorts. Insulate !

 

If you are triggering a KORG SQ-10 sequencer, the sequence mode switch

 must be in either of these two settings for the s-trigger to work.

Links

+ Clocking the Korg SQ 10 - S triggers  

+ Modular Clocks - Analog, MIDI , PPQN