Hard facts on the LFO Expander

August 26, 2010 · Posted in Uncategorized 

- external analog LFO processor

- generates an LFO and bend signal that can be mixed together

- LFO and bends controlled by hand, by foot pedal (active/passive) or by control-voltage

- for Moog minimoog, Yamaha CS80, CS60, CS50, ARP 2600 and all other synthesizers having external inputs for vco, vcf or vca control.

- LFO depth and rate can be controlled at the same time by one single movement !

- adds vibrato, wah-wah, tremolo, pitch bends or other modulations to your synthesizer

- allows mixing of a sequencer-cv with your synth’s keyboard-cv so you can transpose sequences in real-time

- allows attenuation and mixing of cv’s. Control the filter cut-off frequency of your ARP 2600 with a knob that’s just in front of you or add variable keyboard-tracking to your ARP 2600 !

- fits on top of your ARP 2600 keyboard, minimoog keyboard etc.

- LFO range from 0,2 Hz up to 275Hz

- selectable triangle- or square waveform

- runs on batteries (2x 9V) or dc-transformer

- The Yamaha CS80’s keyboard aftertouch can control LFO-depth and LFO-speed at the same time. If you’ve ever played a CS80, you will know how much emotion this adds to your music. However, applying aftertouch on the keys doesn’t allow for fast playing. By connecting the LFO-expander to the external input, you can control the LFO- depth and speed with a foot-pedal and control pitch, filter or volume on a new manner.

- If you own a Yamaha CS50 or CS60, you can control LFO depth by applying aftertouch but you can’t control LFO-speed. By using the LFO-expander you can and introduce CS80-like effects on these synthesizers.

- For minimoog owners, if you want to use a LFO, you have to use oscillator 3 for this purpose since there’s no dedicated LFO on the minimoog. That means you can only use osc 1 & 2 as a sound-source. When connecting the LFO-expander to the vco-input, you have your long-waited-for LFO and make 3-oscillator sounds!

- Almost every analog synth featuring cv-out & cv-in connectors can profit from the LFO-expander for pitch-modulations: simply connect the cv-out to an input of the LFO-expander and connect the output of the LFO-expander to the cv-in of your synth. Now you can apply vibrato or pitchbends by simply pressing the pedal connected to the LFO-expander or by manually turning the knobs on the expander. Many analog synthesizer do have cv-in & cv-out or vco-control: ARP (Odyssey, ARP 2600) Moog (minimoog, prodigy) Roland SH-series, Promars Yamaha CS-series (CS10…..CS80) Simply check the inputs of your synth !

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