Analogue Solutions Oberkorn 3 - Analogue Step Sequencer
Key Oberkorn Features
- 3 x CV channels, 2 x Gate channels, 5 x MIDI-Trigger
- full 16 step CV channels
- 48 CV knobs, 16 Gate switches, 17 LEDs
- CV control of Speed / Tempo.
- Plenty of control sockets.
- Simple MIDI sync
- Steel & Aluminium construction.
|Specification||Controls and Features||Other details|
|CV||3 CV channels, 16 step||Each CV channel has a range control and transpose CV input|
|Gate||2 Gate channels, 16
|approx 10v gate output. Includes ‘Legato’ switch to chain consecutive ons.|
|Clock||LFO clock (Internal clock speed is about <1Hz to 30Hz), CV control of tempo||clock output, external clock in|
|MIDI Trigger||2 MIDI to triggers, 1 clock out, and ‘binary’ output|
|Control input||4 bit binary input to control step number||Using the MIDI binary, any step can be selected from MIDI|
|Buttons||Reset to 1, Reset to 16, and single step advance|
|Reset||Reset input. +5v resets the sequencer to step 1.||Change sequence length to other than 16.|
|MIDI||In and Thru||Channels 1-16.|
|Size / Mass||3U standard rack size.
485mm (W) including rack ears x 145 mm (D) x 134mm (H) [approx]. xgrams
What is an analogue sequencer?
My definition of an analogue sequencer (since others may slightly disagree) is a device that will sequentially output a series of varying voltages (CVs) and gate conditions over time.
Sequencers (and when I use this word I will always be referring to analogue ones unless I state otherwise) will typically be 8-16 steps.
The Oberkorn has 16 steps.
To be a true analogue sequencer the output voltage must be unquantised, otherwise it’s digital! Digital means discrete steps. Oberkorn’s CV outputs can be swept smoothly from zero to full output level.
At each step you can change the voltage at the output socket and set whether a trigger / gate pulse is sent out.
Each step therefore has a potentiometer to change the voltage and a switch to change gate status.
As the clock runs the sequencer sequentially through each step (usually from one to 16), the state of the pot’s and switches is output at the sockets.
Traditionally (back in the 70’s when they where first developed) you would be writing all your electronic music with them. Melodies, bass lines etc.
But these days you have MIDI sequencers and software that can deal with all that.
But sequencers still provide a different experience when creating music. Don’t think about ‘writing melodies’ with a sequencer. It’s more organic than that. I think the best way to use a sequencer in your set-up is to hook it up to a synth that has CV/Gate sockets (like our Telemark, which is perfect for the job). Ideally sync up some sort of drum machine too (we can supply drum modules and other devices here). Start the sequencer.
Then your tune will evolve. Tweak the sequencer controls and switches, and those of your synth. Change the drum pattern. After some time, you will just suddenly hit on a perfect ‘groove’. You will have achieved this in a way that you could never do with a software sequencer. If you have never tried it, search for our YouTube videos for proof.
I have met people who have never used an analogue sequencer. Though they have heard of them, they have never realized what they could do for them. But then after a short demonstration, they realize what they have been missing all these years and are instantly hooked!
Note to Korg MS20 and Yamaha CS Owners:
Korg MS and Yamaha CS series use an inverted gate input. It is possible to custom order a modified Oberkorn with one or both Gate outputs modified to have inverted 5V outputs. This has been tested on an MS20 only.