Ring Modulator

The Moog MF-102 Ring Modulator is an award winning effect designed by Bob Moog.

The Moog MF-102 Ring Modulator is a direct descendant of the original Moog modular synthesizers. It contains three complete modular functions: a ring modulator, a voltage-controlled carrier oscillator, and voltage-contolled dual-waveform LFO. It can be used to process any instrument-level to line-level signal.

Effects From Subtle Tremolo to Harmonically Rich Distortion

The moogerfooger ring modulator can create effects ranging from subtle tremolo to harmonically rich distortion, gong-like sounds, sweeps, swoops, and divebombs. It can be subtle, or outlandish in it’s use – you decide!

Moog MF-102 main features include:

• FREQUENCY rotary control, which varies the carrier frequency over a six-octave range.
• RATE rotary control, which varies the LFO’s frequency from 0.1 Hz to 25 Hz.
• LFO AMOUNT rotary control, which adjusts the amount that the LFO output sweeps the carrier oscillator.
• MIX rotary control, which crossfades continuously from unmodulated to modulated audio.
• DRIVE rotary control, which adjusts the gain of the audio input.
• SQUARE-SINE rocker switch, which chooses the LFO waveform.
• LO-HI rocker switch, which chooses between the low frequency carrier range (2 Hz to 130 Hz) and the high frequency carrier range (60 Hz to 4,000 Hz).
• LEVEL, a three-color LED that is used to set the DRIVE control.
• LFO, a LED that indicates the LFO rate.
• BYPASS, a two-color LED that tells whether the ring modulator is on or bypassed.
• ON/BYPASS, a rugged, smooth-acting stomp switch.
• 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.
• FREQUENCY, RATE, LFO AMOUNT, MIX, all of which are stereo 1/4″ jacks that accept moogerfooger EP1 (or equivalent) expression pedals, or control voltages from two-circuit or three-circuit 1/4″ jacks.
• AUX AUDIO IN – provides a means of applying an external signal to the ring modulator, in place of the carrier oscillator.
• LFO OUT jack – delivers the LFO voltage for use by other voltage-controlled devices.
• CARRIER OUT jack – delivers the carrier signal for use by other devices.
• +9V POWER INPUT jack
• CASE: Black panel with hardwood sides – classic analog appearance.
• DIMENSIONS: 9″ x 6″ x 2-1/2″
• NET WEIGHT: 2 lb