User Manual for CubuSynth models including: VCFA Full DIY Kit, VCFA, Full DIY Kit, DIY Kit
CubuSynth – VCFA – Full DIY Kit – Thonk – DIY Synthesizer Kits & Components VCFA – Build Guide |
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CubuSynth VCFA Manual PCB V1.2 Sept 2022 VCFA Multimode VCF with LP,HP and BP outputs and integrated VCA Page 1 Manual PCB V1.2 Sept 2022 Written and Illustrated by Ruben Sponar CubuSynth VCFA Manual PCB V1.2 Sept 2022 1. Introduction The CubuSynth VCFA is a multimode VCF with LP,HP and BP modes with integrated VCA, CV control over Frequency, Resonance and Volume. The CV input for the Frequency features 1V/Oct scaling over about 2~3 octaves. So you can even create plucky melodies with the resonance in "ringing" mode. The Gain control can reach a nice, soft saturation. 2. Specifications Size: 10HP / 50mm Depth: 34mm (measured from the front panel) Current Draw: +12V: +14mA -12V: -14mA 3. Key features 3 simultaneous Outputs for Low Pass, Band Pass and High Pass Integrated VCA at the input stage CV control over Volume, Frequency and Resonance "Ringing" mode on upper Resonance setting 1 V/oct tracking over 2~3 octaves (with Freq CV attenuator on 100%) Saturation on incoming signal (VCA stage) on upper Gain setting Page 2 CubuSynth VCFA Manual PCB V1.2 Sept 2022 Page 3 CubuSynth VCFA Manual PCB V1.2 Sept 2022 Limited Warranty: CubuSynth guarantees this product to be without defects in materials and workmanship for a period of one year from the date of purchase (proof of purchase/invoice needed). Malfunctions due to improper supply voltages, incorrect or reversed Eurorack power cable connection, misuse of the product, removal of knobs, changing faceplates, or other causes determined by CubuSynth are the user's responsability and are not covered by this warranty. During the warranty period, all defective products will be repaired or replaced, in the CubuSynth workshop with the customer paying the shipping costs to us. CubuSynth takes no responsibility for any damage to persons or equipment caused by the operation of this product. Please contact cubusynth@gmail.com with any questions, authorization for return to manufacturer or any needs and comments. Page 4 CubuSynth VCFA Manual PCB V1.2 Sept 2022 VCFA PCB V1.2 Sept 2022 Written and Illustrated by Ruben Sponar The CubuSynth VCFA was designed by Ruben Sponar, from first prototype in January 2021 to the finished module in September 2022. A few honorable mentions: The main Filter circuit is based around the VCF-3 from Sculls&Circuits The VCA part was originally designed by Tom Wiltshire (electric druid) and modified for the Input VCA stage and the Resonance feedback path. Page 5Writer OpenOffice 4.1.6