The VoltRatio 1V/OCT CV input allows you to quickly and easily switch through exactly 6 harmonic degrees. Additionally, this module enables you to obtain both a copy of the fundamental frequency's voltage and a frequency one octave below simultaneously, allowing you to comfortably control up to 3 oscillators at once. Furthermore, designed as a precision multiple, this module offers precise and professional calibration options, helping your system stay in accurate tuning and advancing both you and your system.

The frequency ratio system, which can also be found in the first digital examples of Thru Zero Frequency Modulation and allows easy adjustment of harmonic degrees in all operator oscillators according to the fundamental frequency, is crucial for maintaining musical and tonal compatibility. This system greatly simplifies programming in complex FM patches. With the three separate outputs designed as Vaemi, which replicate the 1V/OCT CV input like a precision multiple and provide different degrees, you can use all analog thru zero or standard voltage-controlled oscillators. Quickly navigating between harmonic degrees during recording or live performances will provide significant musical and practical advantages. The output providing harmonic degrees (Ratios) includes 2 buffered outputs, making a total of 4 CV outputs on the module.

You can adjust the desired voltage and harmonic degrees between 0-6V according to your preferences and needs using the trimpots on the back of the module. Additionally, you can set the -1 OCT output to the desired negative level using the trimpots on the back.

All inputs and outputs of the module are DC coupled. Essentially, the module adds or subtracts an offset voltage to the voltage entered into the 1V/OCT CV input. We can think of it as a precision CV adder-subtractor. The sum of the entered and added voltages is what comes out of the outputs. In short, you can also use this module to shift the offset, process signals like envelopes or LFOs, and more. (Note about the module: one of the most important points is that it has both positive and negative outputs and precise calibrations for offset and CV scale. So, it’s not just about adding offset voltage to the voltage.)

You can read which channel you are on from the top of the module or easily determine it with the help of LEDs. The module is 10HP wide.

 
 
VoltRatio : Basic Features : Precision Voltage Adder - Subtractor : Vaemi (Eurorack) 
VoltRatio : VoltRatio & OSI-OP Jam : Precision Voltage Adder - Subtractor : Vaemi (Eurorack)
 
VoltRatio Manual EN
VoltRatio Manual TR