SoloStuff´s SoloRack a New Series of Tutorials


I´ve started a new series. And – again – it´s about modular synthesis. I thought SoloStuff´s modular softsynth “SoloRack” worth a whole series of tutorials – and concipated one. Here is the first part: Installation and Overview


It´s a public part. Enjoy it! Rolf

00:00 Introduction
01:15 Download and Installation
02:42 Four Versions of SoloRack
03:15 Loading a Module
03:45 Placing, Replacing and Deleting a Module
04:31 Module Information
04:51 “Always on” and CPU
07:12 Groups of Modules
14:50 Load and Save
15:48 My first Real Patch
24:38 Some Words at the End
Enjoy it!
Have a good time!
The second part of my series of tutorials about SoloStuff´s modular softsynth “SoloRack” is online now:


In this second part of the series I talk about the menus and the hidden functions of SoloRack, give some explanations about oversampling and aliasing and build up a famous patch step by step (please see the timeline for details).

The whole series is meant to give you not only a profound knowledge about the modular softsynth SoloRack, but also a remarkable amount of knowledge about modular synthesis and even about sound synthesis in general. It makes it easy to step into the matter, even if you are a complete beginner (You are a professional? Well, you may like the series nevertheless).

00:00 Introduction
00:19 The Preset Menu
01:58 ASpecial Group: Sequences
03:27 Managing Presets using the Windows Browser
05:46 SAVE, LOAD and Alternative Preset Libraries
07:40 The Preset Description and the Authorship
(or: Albi Soundstone attacks Rolf Kasten)
11:40 Oversampling and Aliasing
22:30 About Cables and LEDs
24:38 Expanding and Reducing the Rack
25:25 Fine Tune
25:55 Cable Art
26:45 Copy and Paste Values
28:00 Understanding the Front Panels
34:50 Building Up a Famous Patch Step by Step
42:45 Some Words at the End
45:56 The End
Enjoy your time!
Introduction to modular synthesis: SoloRack Tutorial 3: The Oscillators Part 1 is online now:


Please see the timeline below for further details.

Timeline and Content
00:00 Introduction
01:18 The SA 310 VCO
02:00 Pitch Range
02:24 1 Volt/Octave
03:19 Trigger, CV and Gate
04:38 “... and it´s this jump to the left ...”
09:07 The Waves
11:22 Analogue Exponential Frequency Modulation
18:35 Pulse Width Modulation (PWM)
20:16 Duty Cycles
22:28 Phase Shifts
27:20 PWM and Oversampling
28:55 Hardsync
40:05 “Bend”
42:28 Half-Wave Rectifier (RA)
45:25 About Phase Shifts Again
52:08 Some Words at the End
53:45 The End
ScShot_19 patch_1.jpg
My last “modular” video in 2017 is out now, SoloStuff´s Solorack part 4, talking about three of the oscillators.


It´s about saw, supersaw and hypersaw, about linear frequency modulation, about exponential sine wave FM, about noise and “Radio”, about Karplus-Strong and about a mysterious patch.

00:00 Introduction
01:18 Some Questions concerning Video 3
05:43 The S304, An Overview
07:23 Phase Shifts
08:48 From Detune to Hypersaw
23:11 Linear Through Zero FM
33:00 The S302 Dual Sub/Sine
36:24 Phase, Phase, Phase
38:44 FM like in 1984
47:13 Noise, Noise, Noise
50:35 Is Karplus Still Strong?
(Sorry for the bad joke!)
53:09 A Patch to puzzle about
53:47 Some Words at the End
55:06 The End

I´ll be working on my album for the next 6 weeks. So, please don´t expect my next video before the end of January 2018. I wish you all a merry Chrismas and a happy New Year.
Enjoy your life!
Part 5 of my series of tutorials about SoloStuff´s “SoloRack” modular VST synthesizer is available now. It is all about frequency modulation – linear as well as exponential – and phase modulation. The video introduces and explains the S321 FM/PM oscillator module.


1 hour and 40 minutes long, more than 39 hours of production time, 54 graphs and pics, 69 short clips, and here is the


0:00:00 Introduction

0:00:33 Basic Terms and Principles of FM/PM

0:01:15 FM versus PM

0:04:00 Exponential versus Linear

0:06:23 The GUI (FrontPanel)

0:08:33 Pitch Range and Tuning

0:12:16 The Matrix

0:23:30 Algorithms

0:38:04 Feedback Loops

0:39:53 A Kind of System of FM Patches

0:40:10 Creating SAW Waves

0:42:20 Creating Square Waves

0:43:30 Creating Triangle Waves

0:46:38 Leaving the Field of Pure Sine Wave Modulation

0:50:04 Certain C : M Relations

0:54:30 Real FM (at last)

0:59:35 Comparing PM, Linear FM and Exponential FM

1:15:32 Modulating the Strength of FM and PM

1:27:00 Patching Complex Sounds: Slap Bass

1:33:03 Patching Somplex Sounds: Harpsichord plus Bass

1:34:50 From the Montains of Madness (sorry, Mr. Lovecraft)

1:36:18 Some Words at the End

1:39:04 The End