Etherwave® Plus User`s Guide
Contents
1. refer to Understanding and Using your MF 102 Ring Modulator manual available on our website www moogmusic com For an even more intense effect try the following changes to the previous setup e Connect the Volume CV Output to the LFO Rate Input of the MF 102 e Now set the Mix and LFO Amount to full clockwise e Set the LFO Waveform switch to the square wave position e Place the LFO Rate Control in mid position Now when your left hand moves away from the Volume Antenna the LFO Rate increases even into the audible frequency range This creates complex sidebands in the Carrier Oscillator itself generating some very hairy timbres Far out This last example illustrates two important things e The Etherwave Plus antennas don t have to control the same parameter on other pieces of gear that they control on the theremin for instance the Volume Antenna can control the LFO Rate e There are many ways to use gestural control of electronic musical instruments Hook it up and try it Experiment These are just a couple quick examples to get you started with using the Etherwave Plus as a CV controller As the variety of modern analog CV compatible equipment increases so to does the wealth of opportunities for the use of your Etherwave Plus as an expressive gestural controller for your sonic explorations For more applications using the Etherwave Plus as a gestural CV Controller visit our website www moogmusic com theremin Co2. Etherwave Plus User s Guide The Etherwave Plus is an expanded version of Moog Music s classic Etherwave theremin using the same great sounding and easily playable theremin circuitry that has made the Etherwave our best selling theremin The Etherwave Plus adds the following features to the standard Etherwave theremin e Pitch CV output The Pitch Antenna can act as a CV Control Voltage controller for any external CV compat ible device such as Moogerfooger Analog effects the Minimoog Voyager analog synthesizer the Little Phatty analog synthesizer or the Moog Guitar The Pitch CV is generated from the pitch of the theremin waveform Nominal output is 2 5V to 4 5V Zero Volts is output when the theremin produces a pitch one octave below middle C approx 131Hz The Pitch CV output is factory calibrated to produce a change of Volt per octave change in the theremin s pitch e Volume CV output The Volume Antenna can act as a CV controller for any external CV compatible device The Volume CV output is generated from the same CV signal used internally for the Etherwave s VCA circuitry Nominal output is 0 to 10V e Gate Output The Gate signal can be used as a signal to start envelopes trigger sample and hold circuits or other timing related activities The Gate signal is generated when the Volume CV rises above 0 Volts AND when the theremin audio is greater than 0 Hz OFF is 0 Volts and 10V is ON e Headphone outp
3. control input of a Voltage Controlled Amplifier VCA As the voltage generated by the Volume Antenna circuitry increases the output level of the VCA increases too We hear this as an increase in volume For more on the subject you may wish to refer to the Basics of Analog Synthesis chapter of the Minimoog Voyager User s Manual or the Basic Theory section of the CP 251 Con trol Processor User s Manual both available on our website www moogmusic com What is a Gate A Gate is a signal that has only two levels Low and High or sometimes called Off and On This can be used as a trig ger for events or as a switch type signal In analog synthesizers a gate is usually used to start or stop the sound of the instrument by starting and stopping circuits called Envelope Generators For example a gate on signal is produced when a key is pressed on the Minimoog Voyager thus starting a note Using the Etherwave Plus CV Outputs The Etherwave Plus CV outputs are located on the bottom of the unit as indicated by the front panel requiring the placement of the Etherwave Plus on a mic stand to provide access CAUTION Be sure you understand the operating levels of the equipment involved before making connections Most modern analog equip ment has protection built into the inputs of a circuit to prevent damage from unexpected voltage levels However some equipment may respond in unexpected ways or may not respond at all to CVs outside the ex
4. he LP go silent as you lift your left hand away from the Volume Antenna you will hear the LP start a note again It is really fun to try different presets out to hear the ways the Little Phatty will respond to the gestural control of the Etherwave Plus Connecting the Etherwave Plus to a MF 102 Ring Modulator In this example we will control the MF 102 s built in Carrer Oscillator which is combined with the audio of the ther emin itself in the Ring Modulator to produce sum and difference frequencies e First connect the Audio Output of the Etherwave Plus to the Audio Input of the MF 102 e While making sound with the theremin adjust the Drive Control of the MF 102 so it is YELLOW e Set the MF 102 Frequency Control to 120 Hz Hi Range e Now connect the Pitch CV Output to the MF 102 Frequency Input e Set the Mix Control to full CCW and the LFO Amount to full CCW e Connect the Volume CV Output to the MF 102 Mix Input Now as you move your left hand away from the Volume Antenna the volume of the audio increases as does the volume of the ring modulator effect When your left hand is away from the Volume Antenna what you hear is 100 the effected signal As your right hand moves in proximity to the Pitch Antenna you will hear the variation of the difference tones generated by the Ring Modulator as both the pitch of the Carrier Oscillator and the theremin audio are changing Note for more information on the operation of the MF 102
5. nfiguring the Headphones for Pitch Preview The Headphone Output of the Etherwave Plus is designed to drive a pair of headphones with a minimum of 32 Ohms impedance The level of the Headphones signal is set by the Phones Vol panel control It is not recommended to use the Headphone Output with a 2 conductor Tip sleeve 4 instrument plug for an alternate audio output As configured from the factory the Headphone Output is generated from the Etherwave Plus audio output for practicing using head phones Some theremin users like to hear the theremin s waveform independently of volume control the so called pitch preview function The Headphone Output can be configured for this feature by moving an internal jumper on the Eth erwave Plus circuit board To change the function of the Headphone Output to pitch preview follow these steps e Disconnect the Etherwave Plus from the power adapter e Remove the Etherwave Plus cover e Touch a grounded surface to discharge any static electric charge that may be built up on your hands before touching any components inside e Looking at the vertically mounted PCB p n 1 213 located between the panel and the standard Etherwave theremin PCB p n 11 211 find where the Audio Output jack is plugged into the PCB this connector is labeled J8 Unplug this connection e Underneath this connection is a 3 pin connector labeled J6 with a jumper connecting the pin closest to the center
6. of the unit to the middle pin of the connector Move this jumper to connect the middle pin to the pin closest to the output jacks e Now reconnect the Audio Output to the 1 213 PCB and reinstall the instrument s cover The following image shows the location of the jumper JUMPER FOR SETTING HEADPHONE OUTPUT NCTION J6 ang Th _ We rnn F E ee Now the Headphone Output delivers a pitch preview output to a pair of stereo headphones With this modification the performer can monitor the current pitch with headphones even when the left hand is shutting off the Audio Output The performer can then play the desired frequency with the right hand before articulating the note with the left hand This can be very useful in studio or even live situations where pitch accuracy is required at the onset of the note played Specifications subject to change without notice Etherwave Moogerfooger Minimoog and Voyager are all registered trademarks of Moog Music Inc 2009 Moog Music Inc All Rights Reserved Moog Music Inc 2004E Riverside Dr Asheville NC 28804 USA phone 828 251 0090 web www moogmusic com MUSIC ING
7. pected levels Note that most modern Moog equipment such as moogerfooger analog effects typically specify OV to 5V or 5V to 5V levels for CV inputs The Etherwave Plus will work safely with these devices despite outputting voltages greater than specified In general it is safe to make connections with the equipment powered up One thing to avoid when making CV connections is to avoid passively mixing CV output signals into a single CV input for instance with a Y type splitter cable This can sum the voltages involved and rapidly exceed the voltage levels expected at a CV input This may cause unwanted results For combining CV signals use a CV mixer such as the 4 input mixer of the moogerfooger CP 251 Control Processor Example Applications Connecting the Etherwave Plus to a Little Phatty analog synthesizer In this example we will control the Little Phatty so that it can be played in a gestural manner similar to a theremin e First connect the Etherwave Plus Gate Output to the Little Phatty LP Gate Input e Second connect the Pitch CV Output to the LP Pitch control input e Next Connect the Volume CV Output to the LP Volume Control Input e On the LP select a preset that is voiced in the 6 range and has a sustaining type envelope Now with your left hand away from the Volume Antenna Move your right hand closer to the Pitch Antenna note the LP pitch rises Now move your left hand close to the Volume Antenna you will hear t
8. ut with headphone volume control can be configured with an internal jumper for normal or pitch preview function e Power Indicator LED indicates when the unit is on and ready to play This User s Guide only describes the added functions of the Etherwave Plus For information regarding the operation of the Etherwave Plus basic theremin functions please refer to the Sections Setting Up and Playing the Moog Music Etherwave Theremin in the Etherwave Theremin User s Manual The Etherwave Plus Front Panel Below is a diagram of the Etherwave Plus Front Panel indicating the Panel Controls and Connections Power Headphone Power Indicator Volume Volume Pitch Waveform Brightness Switch LED Control Tuning Tuning Control Control Stereo Headphone J Output Audio A Line Level LE Ca urpu Gate Output Pitch CV Output Volume CV Output Located on bottom Located on bottom Located on bottom of instrument of instrument of instrument ETHERWAVE PLUS FRONT PANEL DIAGRAM What is a CV CV stands for Control Voltage In analog electronic musical instruments it is a type of low current electrical signal used to continuously modulate a musical parameter In the Etherwave theremin the simplest example of a CV is the control of the instrument s volume by the Volume Antenna The Volume Antenna circuitry generates a CV that in creases as the left hand is pulled away from the antenna This CV is applied to the
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