LFO

LFO stands for low frequency oscillator. Oscillators are one of the most important basic building blocks of synthesizers, because most of the time they are generating the sounds that you hear. Oscillators repeatedly fluctuate back and forth between positive and negative voltages, meaning that they are bipolar signals. These fluctuations are called cycles, and the size of fluctuation is referred to as amplitude. The rate or speed of these cycles is called the frequency, which is measured in Hertz, or cycles per second. If the frequency is fast enough, above 20 Hz, it becomes audible to the human ear. Low frequency oscillators generally inhabit the subsonic range below what humans are able to hear, but most can be sped up enough to be audible.

LFOs are commonly used as sources of modulation in a Eurorack synthesizer to make a parameter rise and fall. For example you can use it to control the pitch of an oscillator, the cutoff point of a filter, or the amplitude of a sound.

This brings up an important fact that is a big part of what makes modular synths so exciting. Audio can be used as a control source and some CV can be audible. A big part of what makes a Eurorack system fun is experimenting with connecting things and discovering what happens. Just be sure you’re connecting outputs to inputs and inputs to outputs!

  • Thorn.audio - VC LFO
    Thorn.audio - VC LFO

    Thorn.audio - VC LFO

    Fully voltage controllable Eurorack format, externally syncable, 16 waveform low frequency oscillator with built-in VCA and sample & hold.
    Powered by a socketed VCLFO10 IC from Electric Druid.Suitable for…

    € 199,00
  • Doepfer A-141-2 Voltage Controlled Envelope Generator VCADSR / VCLFO
    Doepfer A-141-2 Voltage Controlled Envelope Generator VCADSR / VCLFO

    Module A-141-2 is the successor of the obsolete former VCADSR module A-141. Compared to the A-141 a lot of improvements and expansions have been added:
    common control voltage input for all time parameters (A/D/R), range switch for…

    € 140,00
  • MALEKKO – AD/LFO
    MALEKKO – AD/LFO

    MALEKKO – AD/LFO6-CHANNEL ENVELOPE AND LFO GENERATORThe AD/LFO is a digital powerhouse of envelopes and low frequency oscillators, totaling 6 independent function generators plus 2 SUM outputs. Each bank of three can be 10 times…

    € 249,00
  • Doepfer A-143-1 Complex Envelope Generator / Quad AD-Generator / Quad LFO
    Doepfer A-143-1 Complex Envelope Generator / Quad AD-Generator / Quad LFO

    Overview: Module A-143-1 is a complex envelope generator that consists of Attack/Decay generators. For the complex envelope generator the four units are daisy-chained, i.e. the preceeding unit triggers the following unit. The four…

    € 205,00
  • Doepfer A-143-3 Quad LFO
    Doepfer A-143-3 Quad LFO

    Module A-143-3 is a low-cost four-fold modulation oscillator, often called LFO (low frequency oscillator). Like the other modules of the A-143 series (A-143-1 and A-143-2) not a very "exciting" module, just a bread-and-butter…

    € 130,00
  • Doepfer A-143-4 Quad VCLFO/VCO
    Doepfer A-143-4 Quad VCLFO/VCO

    Module A-143-4 is a fourfold voltage controlled low frequency oscillator (LFO). As the frequency range includes moderate audio frequencies it can be used as a four-fold VCO too.

    ∙ four independent VCLFOs/VCOs with triangle…

    € 240,00
  • Doepfer A-143-9 Voltage Controlled Quadrature LFO/VCO
    Doepfer A-143-9 Voltage Controlled Quadrature LFO/VCO

    Module A-143-9 is a derivative of our planned thru-zero quadrature VCO. It is a voltage controlled sine LFO with 4 outputs. The phase shift between the outputs is 90 degrees. The sine shifted by 90 degrees is also called cosine,…

    € 85,00
  • Doepfer A-145 Low Frequency Oscillator LFO
    Doepfer A-145 Low Frequency Oscillator LFO

    Module A-145 is a low frequency oscillator, which produces cyclical control voltages in a very wide range of frequencies. Five waveforms are available: sawtooth, inverted sawtooth, triangle, sine and square wave.
    The LFO can be…

    € 75,00
  • Doepfer A-146 Low Frequency Oscillator 2 / LFO 2
    Doepfer A-146 Low Frequency Oscillator 2 / LFO 2

    Module A-146 (LFO 2) is a Low Frequency Oscillator, which produces periodic control voltages over a wide range of frequencies.
    The LFO can be used as a modulation source for a series of modules (for instance pulse width and/or…

    € 75,00
  • Doepfer A-147-2 VCD LFO
    Doepfer A-147-2 VCD LFO

    Doepfer A-147-2 Voltage Controlled Delayed Low Frequency Oscillator / VCDLFO

    Module A-147-2 is the successor of the VCLFO A-147 but offers much more features than the predecessor. The module is made of these sub-units:

    ∙…

    € 135,00
  • Intellijel Atlantis
    Intellijel Atlantis

    ATLANTIS DUAL OSCILLATOR SUBTRACTIVE SYNTH VOICEThe Atlantis is heavily inspired by the architecture and sound of the classic Roland SH-101. It has always been one of our favorite synths and we really liked how the seemingly…

    € 685,00
  • Intellijel Cylonix Shapeshifter
    Intellijel Cylonix Shapeshifter

    Intellijel Cylonix Shapeshifter

    DUAL COMPLEX MORPHABLE WAVETABLE VCOCylonix and Intellijel have collaborated to bring you a very sophisticated and deeply complex Wavetable VCO. At the core of this module is very powerful FPGA…

    € 554,00
  • Intellijel Dr. Octature II (VCO/LFO)
    Intellijel Dr. Octature II (VCO/LFO)

    INTELLIJEL DR. OCTATURE II (VCO/LFO)4-POLE LOW PASS FILTER AND OCTATURE SINE WAVE VCO/LFOJust like the original Dr. Octature the basis of the module is a 4-pole lpf inspired by the classic “cascaded ota” design, but realized…

    € 249,00
  • Intellijel Rubicon (thru zero fm triangle core vco)
    Intellijel Rubicon (thru zero fm triangle core vco)

    INTELLIJEL RUBICON THRU ZERO FM TRIANGLE CORE VCORubicon main rev 008

    Not long after the David Dixon finished the Dixie design he began working on a totally novel approach to implementing tzfm (thru zero frequency modulation).…

    € 349,00
  • Make Noise MATHS
    Make Noise MATHS

    Make Noise MATHS

    MATHS is an analog computer designed for musical purposes. Amongst other things, it will allow you to:

    ∙ Generate a variety of linear, logarithmic, or exponential triggered or continuous functions

    ∙…

    € 325,00
  • Verbos Electronics - Voltage Multistage
    Verbos Electronics - Voltage Multistage

    Verbos Electronics - Voltage Multistage

    In theory, a sophisticated enough control voltage source can replace all of the control voltage sources in a modular system. That includes saw, square, pulse, triangle LFOs, AR, AD, ADSR,…

    € 599,00
  • Vermona Modular fourMulator
    Vermona Modular fourMulator

    The fourMulator contains four (digital) LFOs with following waveforms: rising and falling sawtooth, square, triangle, sine and random (S?&H) and it works beyond this as a clock generator with tap-tempo function.

    Each LFO can be…

    € 369,00
  • Doepfer A-147-2V (vintage black edition)
    Doepfer A-147-2V (vintage black edition)

    Doepfer A-147-2V (vintage black edition) Voltage Controlled Delayed Low Frequency Oscillator / VCDLFO

    Module A-147-2 is the successor of the VCLFO A-147 but offers much more features than the predecessor. The module is made of…

    € 150,00
  • WMD - MultiMode Envelope
    WMD - MultiMode Envelope

    WMD MultiMode Envelope

    The WMD Multimode Envelope is our take on the classic ADSR. It offers expanded controls, multiple logic modes, and voltage control with the expansion module. This is the most powerful envelope ever designed…

    € 199,00
  • WMD - Phase Displacement Oscillator MKII (PDO MKII)
    WMD - Phase Displacement Oscillator MKII (PDO MKII)

    WMD Phase Displacement Oscillator MKII (PDO MKII)

    Introducing the WMD Phase Displacement Oscillator (PDO). This hybrid VCO has all the feel of an analog VCO but with the benefits of digital waveshaping. The PDO will easily find a…

    € 419,00
  • WMD/SSF Spectrum VCO
    WMD/SSF Spectrum VCO

    WMD/SSF Spectrum

    SPECTRUM is a precision, saw-core VCO with eight possible waveforms (six simultaneous outputs), an eight octave switch, LFO mode and FM mode select with attenuation.

    In addition to the standard waveforms; sine,…

    € 259,00
  • WMD/SSF VC Mini Slew
    WMD/SSF VC Mini Slew

    WMD/SSF VC Mini Slew

    MINI SLEW is a feature packed function generator and voltage controlled slew limiter.

    Transient functions are generated using the rise, fall and shape controls.

    Complex functions can be generated using the…

    € 189,00
  • 2hp - LFO (LFO with morphable waveforms)
    2hp - LFO (LFO with morphable waveforms)

    2hp - LFO (LFO with morphable waveforms)

    Low frequency oscillator with smooth morphing between sine, triangle, sawtooth, and square waveforms. Four alternative waveforms accessible including stepped triangle, FM sine, ramp, and…

    € 159,00
  • Flame Quad CV Recorder
    Flame Quad CV Recorder

    Flame Quad CV Recorder

    Four-channel recorder/looper for recording and playing back control voltages or potentiometer movements in a very wide frequency range, from very slow to fast. The output is a smoothed voltage without…

    € 409,00
  • AJH MiniMod Dual LFO + VCA black
    AJH MiniMod Dual LFO + VCA black

    AJH MiniMod Dual LFO + VCA black

    Dual LFO and VCA module 10HP wide. - This has two LFO's each with variable waveshape. LFO 1 has the addition of a low range and a Sync input. It includes a DC coupled VCA, the input of this is…

    € 309,00
  • 2hp - LFO Black (LFO with morphable waveforms)
    2hp - LFO Black (LFO with morphable waveforms)

    2hp - LFO Black (LFO with morphable waveforms)

    Low frequency oscillator with smooth morphing between sine, triangle, sawtooth, and square waveforms. Four alternative waveforms accessible including stepped triangle, FM sine, ramp,…

    € 159,00
  • ReBach - Catch LFO
    ReBach - Catch LFO

    ∙ Eurorack Low Frequentie Oscillator.
    ∙ Modulatable Tri and Pulse wave.
    ∙ Two oscillators (Second oscillator modulates the first).
    ∙ plm 0.2hz to 25hz
    ∙ skiff-friendly.
    ∙ Size: HP6 (W30mm H128.5mm D26mm).
    ∙ +12V 8mA / -12V 7mA

    € 65,00
  • Doepfer A-145-4 Micro LFO
    Doepfer A-145-4 Micro LFO

    DOEPFER A-145-4 MICRO LFOModule A-145-4 is a simple quad LFO (Low Frequency Oscillator). Not a very "exciting" module, just a bread-and-butter device and a simple demon for work. Virtually in every modular system several LFOs are…

    € 85,00
  • Doepfer A-145-4 Micro LFO Vintage Edition
    Doepfer A-145-4 Micro LFO Vintage Edition

    DOEPFER A-145-4 MICRO LFO VINTAGE EDITIONModule A-145-4 is a simple quad LFO (Low Frequency Oscillator). Not a very "exciting" module, just a bread-and-butter device and a simple demon for work. Virtually in every modular system…

    € 95,00
  • Eowave Weather Drones
    Eowave Weather Drones

    Eowave Weather Drones

    The Weather Drones is an all in one drone voice for eurorack modular.

    It features a triangle based digital oscillator and a lowpass filter. Furthermore it offers three modulation sources: LFO with square…

    € 195,00
  • Klavis Twin Waves MKII
    Klavis Twin Waves MKII

    Klavis Twin Waves MKII

    Voltage-controlled Dual VCO/LFO/random

    Two oscillators independently set as VCO, LFO, or random generator
    Features in VCO mode:
    V/Oct tracking over 10 octaves
    Through zero and linear FM
    Sub-octave…

    € 235,00

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