Radical Frequencies Dual Precision VCO

100% Discrete Electronics. Instead of today’s popular surface mount ‘cell phone’ parts (smt), our modules use full sized resistors and capacitors that are hand inserted and measured with precision of 0,1 - 1 % accuracy, to deliver the very best audio quality. Industrial grey panel Space panel 1.Volt per Octave (V/Oct) Best tuning 6 octaves and maybe 7 to a few cents. 2.Sync (On / Off) Two identical VCOs with the exception that VCO BETA (slave), internally syncs to ALPHA (master).The internal sync switch is selectable to on or off. 3.Tune Both VCOs go from down to LFO range with the coarse tuning knob CCW, up to high frequency oscillation. 4.Frequency Modulation (Linear / Exponential) There is internally normaled FM, exponential as well as linear and both have independent exponential and linear, attenuators. 5. Pulse Width Modulation Also internally normaled is PWM, modulating each other with the triangle waveform. 6. External Modulation An external patch cable breaks the normalisation of all internal connections. 7. Waveshaper The internal FM waveshape is independent, per VCO as well. Options are sine and saw, via the front panel switch. 8. Radical Sync There are 2 choices of sync available, via a switch that selects the capacitors that are present in the signal path. There is no classic hard sync option here but another interesting sync behaviour that can only be described when heard, as it locks up in interesting (in)harmonic ways that depend on the relationship of the frequencies of VCO ALPHA and BETA. This “radical” sync, yields some unique timbres from the slave VCO. 9. External Sync Inputs There are external sync inputs for each VCO as well. 10. Oscillator(s) Waveform Outputs (Sine, Triangle, Saw, Pulse) This is a ramp core VCO with a ramp output too, but Sine and Triangle waves are almost perfect! 11. Pulse Width The Square wave is possible to be modulated via PW pot and change the width for pulse sound while giving an external modulation from PWM input. Finally you can make something complex, with great ease and only the V/Oct patched in, just by playing with the attenuators and switches that are spread across the front panel, to dramatically extend the range of sounds. This dual VCO module goes from classic ripping Psy FM lead (yes *the one*), to very convincing electric fender jazz bass, with ease, just dial in the exponential and linear cross modulation amounts. Tempco resistors thermally attached to the tuning IC ca3046 transistor core on both VCOs give FM patches that maintain harmonic integrity over a very large frequency range. Availability of 2 diferent panels : Space & Industrial grey panel.