Moog Moogerfooger MF-101 Lowpass Filter
The MF-101 Low Pass Filter features an all-analog Bob Moog-designed lowpass filter. This Moogerfooger filter is a direct descendant of the original Moog synthesizers. It contains two complete modular functions: a voltage-controlled lowpass filter and an envelope follower. Now you can own the same classic Moog filter as in the Minimoog and Moog Modular synthesizers. Each of the four performance parameters may be controlled smoothly and continuously by panel knob, expression pedal, or external control voltage. Audio input and output signals may be set to any instrument or line level.
Housed in a rugged steel and hardwood enclosure, the MF-101, like other Moogerfooger instruments, has the classic good looks, versatility, and high sound quality of the well-known vintage Moog synthesizers.
- Audio In: 1/4" phone jack - accepts any instrument-level or line-level audio signal.
- Audio Out: 1/4" phone jack -4 dBm nominal output level.
- Cutoff: 1/4" TRS- accepts Moogerfooger or equivalent expression pedals or CV.
- Resonance: 1/4" TRS- accepts Moogerfooger or equivalent expression pedals or CV.
- Amount: 1/4" TRS- accepts Moogerfooger or equivalent expression pedals or CV.
- Mix: 1/4" TRS- accepts Moogerfooger or equivalent expression pedals or CV.
- Envelope Out: - delivers the Envelope Control voltage for use by other voltage-controlled devices.
- Cutoff: Rotary control which varies the filters cutoff frequency over an eight octave range.
- Resonance: rotary control, which varies the shape of the filter's response, from pure lowpass to actual oscillation.
- Envelope Amount: rotary control, which adjusts the amount that the input signal's 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-color LED that is used to set the DRIVE control.
- Env: a 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.'
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. A lowpass filter does the same sort of thing to the sound spectrum.
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 instrument's signal, you actually "play" the filter as you play your instrument.
US 110V Power supply is included. If you need a 220V power supply just add SKU185781 to your cart for $24.99 get the official Moog 220v power supply. for use in Europe, Asia, and Australia and other countries.