WALDORF VCF 1 U SER M ANUAL V1.
Development Team Introduction Thank you for purchasing the vcf1 Modulator Eurorack module. Development: Oliver Rockstedt, Victor Höller, Frank Schneider Like any Waldorf product, the vcf1 has been developed and produced using sand from the Gobi Desert. We hope you enjoy it as much as we do.
1 Contents General Safety Guidelines 1 General Safety Guidelines 3 2 Device Maintenance 4 3 Package Contents 4 4 Connectors & Controls 5 • Only use the device indoors in a dry atmosphere. 5 Device Connection 5.1 Power Connection . . . . . . . . . . . . . . . . . . . . . . . . . . 5.2 Signal Connection . . . . . . . . . . . . . . . . . . . . . . . . . . 6 6 6 • Never use the device in damp conditions, such as in bathrooms or near swimming pools. 6 Device Overview 6.1 Input & Distortion . . . .
2 Device Maintenance • Do not try to open the device or detach the frontpanel. • Refer all service and repair tasks to qualified personnel. • There are no user serviceable parts inside the chassis. • Use only a soft cloth or brush to clean the device surface. • Never use cleaning chemicals as they will damage the device surface.
4 Connectors & Controls No 5 Id Description 1 In1 jack Audio input 1 2 In1 pot Level control for Audio input 1 3 In2 jack Audio input 2 4 In2 pot Level control for Audio input 2 5 Distortion pot Level control for distorted signal from Audio input 1 6 Distortion jack Separate output for distorted signal 7 Cutoff Modulation 1 jack Input 1 for cutoff modulation 8 Cutoff Modulation 1 pot Level control for signal from Cutoff Modulation 1 (unipolar) 9 Cutoff Modulation 2 jack Input
5 Device Connection To integrate the vcf1 into your modular system, a few connections have to be made to supply it with power and the signals you like to process. 5.1 Eurorack connectors are usually orientated in a way that the -12V supply line is located at the bottom. The vcf1 module follows the same convention. The red line of the ribbon cable should show to the bottom of your bus board and at the bottom of your module. Refer to the figure above.
6 Device Overview 6.1.2 Distortion Dynamically changing the harmonic content of audio signals is one of the key elements in synthesizers. Filters of any kind are the most common devices to achieve this. With the vcf1, you get hold of a multi-mode filter that is not only capable to remove parts of the frequency spectrum, but also generating new harmonics via several distortion possibilities.
6.2.2 Cutoff Modulation the knob. • When using a patch cable, the pot acts as a level control for the resonance CV. In order to drive the filter into self-oscillation, you’ll need a modulation signal level of at least +3..4V. This section consists of two CV inputs with attenuators. You can use it to change the timbre of the sound over time via modulation modules like envelopes or LFOs.
7 Even when set Gain fully counter-clockwise, there will be a tiny amount of coloration (maybe not even noticable) applied to the signal. This is unavoidable due to the way the circuit works. If you insist to use the filtered signal in a completely unaffected way, grab it from the individual outputs of the filter section directly. Tips & Tricks • Feed back the signal from the end of your module chain (e.g. after the VCA) back to the In2 input of the vcf1.
Block Diagram 10
