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Summary of Contents for Instruo vinca
- Page 1 câ Dual VCA User Manual...
- Page 2 Contents Description / Features Installation / Specifications Overview Channel One Channel Two Linking v câs Patch Examples...
- Page 3 Description We’ve all heard the phrase, “You can never have enough VCAs.” We know it and we totally get it. With the Instruō câ, this truly is the case. câ is a two channel voltage controlled amplifier with both parallel and series routing capabilities.
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Page 4: Specifications
Installation 1. Confirm that the Eurorack synthesizer system is powered off. 2. Locate 4 HP of space in your Eurorack synthesizer case. 3. Connect the 10 pin side of the IDC power cable to the 2x5 pin header on the back of the module, confirming that the red stripe on the power cable is connected to -12V. - Page 5 câ | 'vIŋkə | noun (horticulture) genus of small flowering plants commonly known as the periwinkle Front Back DUAL VCA VCA 1 Channel 1 LINEAR TO EXPONENTIAL SHAPING VCA 2 UNITY GAIN Channel 2 SIGNAL ROUTING PARALLEL SERIES 1. Input 1A 8.
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Page 6: Channel One
Channel One Input 1a: DC coupled input for channel 1. • This input will accept both audio and control voltage signals. • Channel 1 functions as a four quadrant multiplier. Signals at Input 1a will multiply with signals at Input Input Bias: Input Bias Input 1a. - Page 7 • Setting the knob to the center position will attenuate the signal at Input 1a. • Turning the knob anticlockwise will scale the inversion of the signal Input 1a. • Turning the knob clockwise will scale, but not invert, the signal at Input 1a.
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Page 8: Channel Two
Channel Two Input 2: DC coupled input for channel 2. • This input will accept both audio and CV signals. CV Input: DC coupled control voltage input for channel 2. • This input will accept both audio and control voltage signals. •... - Page 9 Shape: This control sets the response curve of channel 2. Turning the knob anticlockwise will set the response curve to linear. Turnining the knob clockwise will set the response curve towards exponential. Turning the knob towards exponential will increase the available gain range beyond the fader’s unity gain position.
- Page 10 If the switch is set to the bottom position, the internal routing is set to Series, where the output of Channel 1 will cascade and normal to the input of Channel 2. VCA 1 VCA 2 VCA 1 VCA 2 •...
- Page 11 Linking v câs Multiple câs can be linked together via Back Jacks on the back side of the module. 1. Determine primary and secondary VCA’s 2. Patch the Output Back Jack of the primary VCA to the Input Back Jack of the secondary VCA using the supplied right angled patch cable.
- Page 12 Patch Examples East Coast Synth Voice: Summary: The sequencer or keyboard sends voltages to oscillator while simultaneously triggering the envelope generator. The CV output of the envelope generator opens the filter and câ, allowing the oscillator’s signal to pass through. More traditional East Coast patches would incorporate separate envelope generators for the filter and câ.
- Page 13 • Set the resonance of the filter to a desired position. • Set the Shape knob to linear. • Monitor the output of the VCA. Control Path: • Connect the 1V/Oct output of a sequencer or keyboard to the 1V/ Oct input of the oscillator.
- Page 14 Ring Modulation: Summary: Both sine waveforms multiply at Channel 1 of câ. Output Audio Path: • Connect the sine waveform of an oscillator to Input 1A câ • Input 1B Connect the sine waveform of a secondary oscillator to câ. •...
- Page 15 Gated Ring Modulation: Summary: Both sine waveforms multiply at Channel 1 of câ. The trigger, gate, or clock signal triggers the envelope generator. The CV output of the envelope generator opens câ, allowing the multiplied signal to pass through. Gate Signal Output Audio Path: •...
- Page 16 Control Path: • Connect a trigger, gate, or clock signal to the trigger input of an envelope. • CV Input câ Connect the CV output of the envelope to the set the Amplitude/CV Attenuator of the câ to a desired position. •...
- Page 17 Multiplication Modulation: Summary: The sine waveforms of the first and second oscillator are multiplied at Channel 1 of câ. The multiplied signal then gets multiplied with the sine waveform of the third oscillator at Channel 2. The product of the multiplied signals is then output by Channel 2 and can then be routed to other câ...
- Page 18 • Set the fundamental frequency of the secondary oscillator to a desired position. • Set the fundamental frequency of the third oscillator to a desired position. • Set the Input Attenuator to a desired position. • Sed the Input Bias knob to a desired position.
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