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   Welcome to the world of moogerfooger® Analog Effects Modules! Your Model MF-
102 Ring Modulator is a rugged, professional-quality instrument, designed to be equally

at home on stage or in the studio.  Its great sound and classic effects come from the
state-of-the-art all-analog circuitry, designed and built under Bob Moog's personal
direction.

   Your MF-102 is a direct descendent of the original modular  Moog™ synthesizers. It
contains three complete modular functions,- a Ring Modulator, a voltage-controlled
Carrier Oscillator, and a voltage-controlled dual-waveform Low Frequency Oscillator
(LFO). All performance parameters are voltage-controllable, which means that you can

use expression pedals, MIDI-to-CV converter, or any other source of control voltages to
'play' your MF-102.

   While you can use it on the floor as a conventional effects box, your MF-102 is much
more versatile and its sound quality is higher than the single fixed function "stomp

boxes" that you're probably accustomed to.  You will find that your MF-102 is a deep
musical resource. It will give you an amazing variety of new sounds and will become
your creative companion as you explore its functions.

   The following pages will first tell you how to hook up your MF-102 and set the panel
controls for the 'basic' setup. Next, we'll explain how the modular functions in your MF-
102 work. After that we'll go through the panel features and give you suggestions on
how to use your MF-102 in specific applications. At the end of this booklet you'll find

technical specifications, service and warranty information, and information about
Moog Music.

Summary of Contents for Moogerfooger MF-102

Page 1: ...Understanding and using your moogerfooger MF 102 Ring Modulator...

Page 2: ...CV converter or any other source of control voltages to play your MF 102 While you can use it on the floor as a conventional effects box your MF 102 is much more versatile and its sound quality is hig...

Page 3: ...ng modulator is off line bypassed while green indicates that the ring modulator is on line Pressing the stomp switch will toggle the BYPASS light between red and green For now leave the BYPASS light o...

Page 4: ...instrument s signal is now going through the ring modulator Listen to how the MF 102 affects the quality of your instrument s tone You will hear a distinct vibrato Note that the AMOUNT knob affects t...

Page 5: ...is a time graph of the actual shape of the vibration while the spectrum shows how strong each of the sound s harmonics is See Figure 3 Figure 3 A musical sound can be represented as a waveform top gra...

Page 6: ...type of amplitude modulation A ring modulator circuit has two inputs and one output If a sine wave of one frequency is applied to the first input and a sine wave of another frequency is applied to the...

Page 7: ...the ring modulation of a 500 Hz square wave by a 100 Hz sine wave Figure 7 Waveform and spectrum of a 500 Hz square wave Figure 8 Waveform and spectrum of a 500 Hz square wave ring modulated by a 100...

Page 8: ...lo Instead your sound will begin to sound rough and detuned because the two sets of harmonics are far enough apart so you begin to hear them as two distinct sounds When the FREQUENCY control is as far...

Page 9: ...controls to hear the effect of the LFO over its entire range Then set the left switch to square waveform to hear the difference between the two LFO waveforms TOURING THE PANEL FEATURES The LFO Section...

Page 10: ...al is after being adjusted by the DRIVE control As the signal level increases the light goes from off to green to yellow and finally to red Very weak signals do not light up this light at all When the...

Page 11: ...CARRIER OUT jacks may be used as control or audio signal sources to control other voltage controlled devices including other moogerfooger analog effects modules The amplitude of the LFO output signal...

Page 12: ...1 4 tip ring sleeve phone jacks The sleeves are grounded and the ring terminals are supplied with 5 7 volts which is current limited to about 0 5 milliamperes The tip terminals receive the variable vo...

Page 13: ...ivalent to turning the corresponding knob through its entire range You can program your MF 102 entirely from external control voltages by turning all four control knobs but not the DRIVE knob counterc...

Page 14: ...roduct to us Wrap your MF 101 carefully and pack it with the power adaptor in its original carton The warranty will not be honored if the product is not properly packed Then send it to Moog Music UPS...

Page 15: ...FEATURES AUDIO IN 1 4 phone jack accepts any instrument level or line level audio signal from 16 dBm to 4 dbm Input impedance is 1 megohm AUDIO OUT 1 4 phone jack 4 dBm nominal output level Output imp...

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