Moog MoogerFooger Low Pass Filter MF-101

Moog MoogerFooger Low Pass Filter MF-101
The MF-101 Lowpass Filter is an award-winning effect designed by Bob Moog. It contains the legendary Moog filter as well as an envelope follower for dynamic-controlled filter sweeps. Used with Bass Guitar Keys Samples or recorded tracks the MF-101 is ready to be tweaked for classic Moog filter effects.

The award-winning MF-101 Lowpass Filter is a direct descendant of the original Moog modular synthesizers. It contains two complete modular functions a voltage-controlled lowpass filter and an envelope follower. It can be used with any instrument-level to line level-signal. The moogerfooger filters control parameters are signal mix cutoff frequency resonance amount and envelope amount. All of the Lowpass Filters parameters can be controlled with expression pedals or external control voltages as well as by great feeling knobs which beg to be tweaked. Panel switches select filter mode and envelope follower speed. 1/4″ jacks are provided for audio input and output pedal/control inputs and envelope follower output. A heavy-duty yet smooth-acting bypass switch allows tabletop or foot operation. A lowpass filter removes high frequencies from a tone. It makes the tone sound more mellow or muted. The lower the Cutoff the more muted the tone sounds. Imagine a window shade. As it is pulled down it cuts out the higher light then the light from the middle of the window then finally all the light. The MF-101 Lowpass Filter does the same sort of thing to the sound spectrum with its Cutoff Control. As you turn up the Resonance control the overtones near the cutoff frequency are boosted. Resonance gives the moogerfooger filter the same classic Moog filter sound as the Minimoog and Moog modular synthesizers. The envelope follower tracks the loudness contour (envelope) of a sound and produces a voltage that follows the dynamics of your playing. Every time you play a note the envelope voltage goes up and then down. The harder you play the higher the envelope voltage goes. The envelope follower opens and closes the lowpass filter. Think of the envelope voltage as an invisible hand that turns the CUTOFF knob up and down every time you play a note. Since the envelope follows the dynamics of your instruments signal you actually play the filter as you play your instrument. Features CUTOFF rotary control which varies the filters cutoff frequency over an eight-octave range. RESONANCE rotary control which varies the shape of the filters response from pure lowpass to actual oscillation. ENVELOPE AMOUNT rotary control which adjusts the amount that the input signals envelope sweeps the filter cutoff frequency. MIX rotary control which crossfades continuously from unfiltered to filtered audio. DRIVE rotary control which adjusts the gain of the audio input. SMOOTH-FAST rocker switch which chooses between smooth and fast envelope follower response. 2-POLE 4-POLE rocker switch which chooses between 2-pole (bright) and 4-pole (deep) filter frequency response. LEVEL a three-colour LED that is used to set the DRIVE control. ENV an LED that indicates the strength of the envelope voltage. BYPASS a two-color LED that tells whether the filter is on or bypassed. ON/BYPASS a rugged smooth-acting stomp switch. Jack Panel Features AUDIO IN 1/4″ phone jack – accepts any instrument-level or line-level audio signal from -16 dBm to 4 dbm. AUDIO OUT 1/4″ phone jack – -4 dBm nominal output level. CUTOFF RESONANCE AMOUNT MIX all of which are stereo 1/4″ jacks that accept moogerfooger EP1 (or equivalent) expression pedals or control voltages from either two-circuit or three-circuit 1/4″ jacks. ENVELOPE OUT jack – delivers the Envelope Control voltage for use by other voltage-controlled devices. KPA-3 Power Adaptor available separately Moog Guitar-and-Bass 92B

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Moog MoogerFooger Low Pass Filter MF-101 -

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