Moog moogerfooger MF-107 FreqBox Using Instruction
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Moog moogerfooger MF-107 FreqBox Using Instruction

Moog moogerfooger MF-107 FreqBox Using Instruction

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Understanding and Using your
moogerfooger®
MF-107 FreqBox™
Introduction.................................................2
Getting Started Right Away!.......................4
Basic Applications......................................6
FreqBox Theory........................................10
FreqBox Functions....................................16
Advanced Applications.............................21
Technical Information...............................24
Limited Warranty......................................25
MF-107 Specifications..............................26

TABLE OF CONTENTS

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Summary of Contents for Moog moogerfooger MF-107 FreqBox

  • Page 1: Table Of Contents

    Understanding and Using your moogerfooger® MF-107 FreqBox™ TABLE OF CONTENTS Introduction..........2 Getting Started Right Away!.......4 Basic Applications........6 FreqBox Theory........10 FreqBox Functions........16 Advanced Applications......21 Technical Information.......24 Limited Warranty........25 MF-107 Specifications......26...

  • Page 2: Introduction

    This manual begins with a "quick start" section that will get you started without reading the whole manual – certainly a new device must be used right away! Keep in mind that the MF-107 FreqBox is a complex device, so we recommend you read and understand...
  • Page 3 Thinking that this might be a really cool and unique idea, I sketched it up and brought it to Bob Moog. I asked him if such an idea would be feasible. He looked me in the eye and produced one of his famous belly-laughs.

  • Page 4: Getting Started Right Away

    FreqBox: 1) Inspect the carton and its contents: The MF-107 comes with the Moogerfooger, a +9VDC, 300 mA, tip-positive power supply, and this manual.
  • Page 5 5) Set levels: Turn on your amplifier. Make sure the Bypass indicator is RED. Play your instrument and adjust the volume of the amplifier so it is at a comfortable level. Press the Bypass switch and the Bypass indicator will change to GREEN which means the effect is active. 6) Play: Now play a little on your instrument.

  • Page 6: Basic Applications

    BASIC APPLICATIONS The following are diagrams of basic settings of the FreqBox. They are good staring points for learning how to use the FreqBox. For each setup, set the knobs on your FreqBox to the position shown. Adjust the Drive and Output Level controls to match your input signal. Make sure the Bypass LED is GREEN to hear the effect.
  • Page 7 Sync+FM This setup is the same as the previous, but adds a dose of FM, which gives the sound an extra bit of growl, especially when the frequency of the VCO is swept with the Freq control, or an expression pedal plugged into the Freq Input.
  • Page 8 Drone This is a fun setup for modal jams or morning ragas – it uses just the sound of the VCO set to one frequency, tuned to the key that you’re playing in. If you’re in A, just tune the VCO to A with the Freq control.
  • Page 9 FM Gongs This is a setup that just uses FM for sounds somewhat reminiscent of gongs. It works well with slow, guitar-like signals plucked and allowed to fade out. Don’t play too hard or the gongs may sound flatulent. Figure 8 - FM Gongs FM sizzler This is a weird one –...

  • Page 10: Freqbox Theory

    Electro Drumz This setup requires an extra patch cable for connecting the envelope follower out into the Envelope Amount input. For the best results, Play a sound with a strong attack and a quick fade, like a very muted guitar Figure 10 - Electro Drumz string plucked hard with a pick.
  • Page 11 The heart of the FreqBox is a Voltage Controlled Oscillator, or VCO. The FreqBox VCO is a descendant of the same oscillators used in the Moog Voyager and Little Phatty® synthesizers. An oscillator is a type of circuit that vibrates electronically such that the changes in voltage (electrical potential) can be used as a sound source.
  • Page 12 VCO Waveforms The timbre of the VCO is determined by its waveform. As defined earlier, a waveform is related to the timbre, and the number of harmonics in a sound. In many musical sounds, waveforms are really complex, and change a lot over time, often both in frequency, timbre and amplitude. This is not so with the raw signal of a VCO.
  • Page 13 yet bright. Pulse waves contain all harmonics, but the amplitude of the harmonics varies with pulse width. A triangle wave is a symmetrical waveform (figure 12D). As it turns out all symmetrical waveforms have only odd harmonics. With a triangle wave the amplitude of the harmonics decrease much faster than a square wave (exponentially), which gives it a much mellower sound, closer to a sine wave than a square wave.
  • Page 14 FM stands for frequency modulation. The term modulation refers to any process in which one waveform is changed in response to the contour of another waveform. Frequency modulation refers specifically to modulating the frequency of an oscillator. With a VCO, modulation is performed with control voltages.
  • Page 15 produce some wild and unpredictable results. Experimentation is key to discovering new timbres! VCA stands for Voltage Controlled Amplifier. A VCA is an amplifier with the output level set by a CV. A low value CV (close to zero) turns off the output.

  • Page 16: Freqbox Functions

    FREQBOX FUNCTIONS Here is a block diagram of the FreqBox signal and control path: Figure 14-Block Diagram of the FreqBox The input is passed through a unity gain buffer, and then connected to the bypass circuit. In bypass, the buffered input signal is connected directly to the output.
  • Page 17 Level LED. Drive: The Drive control is only active when the effect is on (The Bypass LED will be GREEN). It sets the input sensitivity of the MF-107, so that it will work with instrument to line-level inputs. The Drive control can also be turned up for overdriving the input signal.
  • Page 18 compressed and the envelope follower is not as responsive to the dynamics of your playing. It is perfectly OK to use the FreqBox with the Drive control all the way up. Output Level: The Output Level control is used for balancing the loudness of the signal when the effect is active with the loudness of the signal when the effect is bypassed.
  • Page 19 envelope follower CV is applied to the VCO frequency. Note that the envelope follower CV is ADDED to the setting of the Freq control. The VCO frequency can be swept by the envelope follower CV over 8 octaves, more than the Freq control on the front panel. Be aware that the setting of the Env.
  • Page 20 Freq, Wave, Env. Amount, FM Amount, and Mix. All of these inputs accept an expression pedal like the Moog EP1 or EP2 with tip-ring-sleeve plugs, or a CV on standard tip-sleeve cables. All inputs are added to the setting of the front panel controls.

  • Page 21: Advanced Applications

    ADVANCED APPLICATIONS Using w/ other effects The FreqBox is a natural for using with other effects. It is the perfect type of signal to run into a filter, because it can produce the basic waveforms used for subtractive synthesis. Filter effects include the MF-101 Lowpass Filter, the MF-103 12-Stage Phaser, and the MF-105 MuRF (Multiple Resonant Filter Array).
  • Page 22 Using the FreqBox with a CP-251 Control Processor Sample and Hold Sync Figure 16 - Sample and Hold Sync This setup patches the Sample and Hold output of the CP-251 to the Frequency input. The setup is pretty much otherwise the Basic Sync Setup.
  • Page 23 pulse-width modulation or PWM. The rest of this setup is the basic sync setup, the PWM adds a cool shifting, swirling sound to the VCO. W/ Voyager/VX-351 Many folks will want to use the FreqBox as an extra oscillator in their analog setup, such as a Voyager with the VX-351 CV Expander.

  • Page 24: Technical Information

    POWER: The MF-107 works on +9 volts DC and uses a max of about 200 milliamperes of current. Use only the power supply supplied with the MF-107 or the exact equivalent.

  • Page 25: Limited Warranty

    LIMITED WARRANTY Moog Music warrants that its products will be free from defects in materials or workmanship, and shall conform to specifications current at the time of shipment, for a period of one year from date of purchase. During the one-year period, any defective products will be repaired or replaced, at Moog Music’s option, on a return-to-factory basis.

  • Page 26: Mf-107 Specifications

    1⁄4” jacks. ENV.OUT CV output carries the unfiltered Envelope Follower CV generated by the MF-107’s envelope follower. Nominal output ranges from 0 to +5 Volts. This output only available when effect is ON OSC. OUT CV output carries the VCO direct signal. The nominal output level is 5 volts peak-to-peak.
  • Page 27 SHIPPING WEIGHT: 4 lb, including power adaptor and instruction manual POWER REQUIREMENTS: 120 volt, 5W. 220 volt power adaptor available on special order MOOG MUSIC Inc. 2004E RIVERSIDE DRIVE ASHEVILLE, NC 28804 Phone: (828) 251 0090 FAX: (828) 254 6233 Email: info@moogmusic.com...
  • Page 28 Notes:...

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