Black VCO - Synthesizer Erica Synths - Free user manual and instructions
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| Product Type | Analog Voltage Controlled Oscillator (VCO) Module |
| Brand | Erica Synths |
| Model | Black VCO |
| Category | Eurorack Synthesizer Module |
| Form Factor | Eurorack, 3U, 10HP |
| Dimensions (Width x Depth) | 10HP (approx. 50.5mm) x 35mm (depth behind panel) |
| Weight | Approx. 100 g |
| Power Supply | +12V: 60mA, -12V: 30mA (Eurorack standard ribbon cable) |
| Waveforms | Sawtooth, Triangle, Sine, Square (with pulse width modulation) |
| Frequency Range | 20 Hz to 20 kHz (typical VCO range with 1V/octave tracking) |
| Control Inputs | 1V/Octave CV In, FM In, PWM In, Sync In |
| CV Outputs | Saw Out, Tri Out, Sin Out, Square Out (all via minijack) |
| Manual Controls | Frequency Knob (coarse), Fine Tune Knob, PWM Knob, FM Amount Knob |
| LED Indicators | None |
| Construction | Black front panel, aluminum, with white silk-screen labeling |
| Compliance | RoHS, CE |
| Included Accessories | Eurorack power cable, mounting screws |
| Repairability | Designed for easy access to PCB; standard components (through-hole and SMD) |
| Cleaning Instructions | Use dry or slightly damp cloth; avoid solvents; disconnect power before cleaning |
| Safety Notes | Do not expose to moisture; operate within specified power range; avoid reverse polarity |
| Additional Features | High stability, temperature compensated; soft sync; linear FM input |
Frequently Asked Questions - Black VCO Erica Synths
What power supply does the Erica Synths Black VCO require?
It requires +12V (60mA) and -12V (30mA) from a standard Eurorack bus board via a 10-pin ribbon cable.
How do I tune the Black VCO?
Use the Frequency knob for coarse tuning and the Fine Tune knob for precise adjustment. Apply a known CV (e.g., from a keyboard) to the 1V/Octave input to calibrate tracking.
What waveforms does the Black VCO output?
It provides sawtooth, triangle, sine, and square waveforms simultaneously via dedicated outputs. The square wave has pulse width modulation (PWM).
Can I modulate the frequency with external CV?
Yes, there are two FM inputs: an exponential FM (1V/Octave tracking) and a linear FM input with an attenuator knob for modulation depth.
How do I use the sync function?
The Sync In input allows hard synchronization to an external waveform. Connect a pulse or saw wave from another VCO to reset the oscillator's phase, creating classic sync sweep sounds.
What is the pulse width modulation range?
The PWM Knob manually adjusts pulse width from 10% to 90%. The PWM In accepts an external CV to modulate the width, useful for creating evolving timbres.
Is the Black VCO suitable for bass sounds?
Absolutely. Its stable frequency range down to sub-audio frequencies (approx. 20 Hz) and rich harmonics make it excellent for bass patches and drone music.
Can I daisy-chain multiple Black VCO modules?
Yes, as long as your power supply provides sufficient current. Each module draws about 90mA total (+12V and -12V combined). Use standard Eurorack ribbon cables to connect to the bus board.
What should I do if the VCO does not produce sound?
Check power connections (proper polarity), ensure the output is patched to a VCA or mixer, verify that the frequency knob is set to an audible range, and test with a known good cable.
How do I clean the module?
Disconnect power and use a soft, lint-free cloth slightly dampened with water. Do not use alcohol or solvents. Avoid touching the PCB.
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USER MANUAL Black VCO Erica Synths
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Product information
Brand : Erica Synths
Model : Black VCO
Category : Synthesizer