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ET-4.3

user manual

Therevox builds custom musical 
instruments in Tecumseh Ontario Canada.
 
The ET-4.3 was designed and constructed 
by Mike Beauchamp and Melissa 
Damphouse with heaps of support from 
family, friends and our customers.
 
 
therevox.com
info@therevox.com
 
 
Made in Canada
 
 
 
 
 
 
 

Summary of Contents for ET-4.3

Page 1: ...ET 4 3 user manual ...

Page 2: ...ustom musical instruments in Tecumseh Ontario Canada The ET 4 3 was designed and constructed by Mike Beauchamp and Melissa Damphouse with heaps of support from family friends and our customers therevox com info therevox com Made in Canada ...

Page 3: ...Playing Switches Oscillators Filter and Reverb Effects Loop and Phones Power and Outputs Exp and CV Jacks Exp 1 and Holds MIDI over USB output Care Technical Info 1 3 4 6 7 8 9 10 12 14 15 contents ...

Page 4: ...uced by two oscillators each producing six different waveforms A low pass filter and spring reverb allow for further sonic goodness The pitch of the instrument is controlled by the ring and the amplitude of each oscillator is controlled by the pressure sensitive intensity keys ...

Page 5: ...fortably between the first and second knuckle by moving the rubber retainer to a different notch switches 3 sync off sync on osc 1 osc 2 tuner output osc 2 osc 1 osc 2 sync off on ring osc 2 off on A tuner can be connected to silently verify and modify tuning of either oscillator at any time The tuner output switch selects which oscillator to tune Synching oscillator 2 will force the waveform to r...

Page 6: ...endently using the osc 2 offset control This control can also be used to detune or offset the pitch of oscillator 2 to any harmonic interval of oscillator 1 For each oscillator there are six octave positions and six waveform options 2 4 8 16 low 32 2 4 8 16 low 32 osc 1 osc 2 Sine Wave Triangle Wave Rectified Sine Square Wave 30 Pulse 10 Pulse White Noise 5 ...

Page 7: ...nal control voltage plugged into the exp jack The filter resonance controls the amount of emphasis at the filter cutoff frequency Reverberation is generated by sending the sound through a series of springs inside the ET 4 3 The dry reverb mix knob controls the blend between the original and reverberated sound The amplitude of the output signal is controlled by the output volume knob 7 phones volum...

Page 8: ...e on the side panel A 1V oct CV for the ring is available as well as control voltage outputs for each intensity key exp 2 ring exp 1 8 power and outputs The ET 4 3 is powered by a 16VAC 1000mA adapter Osc 1 2 is a stereo TRS output with each oscillator on a separate channel These signals are taken before the filter and reverb An instrument tuner can be plugged directly into the front panel The out...

Page 9: ... with CV source The hold knobs control the volume of each oscillator and can be used to hold the position of each intensity key hold hold 2 pitch 2 pwm 1 2 pitch 1 2 gain exp 1 function A 1 4 mono cord can be used on the side panel to create custom patches Here are some examples ring exp 2 filter cutoff frequency will change with ring position 2 exp 2 control the filter cutoff with intensity key 2...

Page 10: ... A Type B USB jack on the side panel is used to send MIDI commands to a USB host such as a laptop or computer With the ET 4 3 already powered on plug the USB cable between the host and instrument When the instrument recognizes a connection it will wait 10 seconds for you to select a mode of operation There are 4 modes of operation that can be selected by having held down different intensity keys a...

Page 11: ... take care when handling and moving Avoid water and extreme temperatures In case of emergency do not use instrument as a flotation device Your instrument has been calibrated and tested by Therevox Please contact us if you have any questions or comments technical info 16V AC 1000mA Not DC 2 1mm barrel type 0 to 6V 1V per octave 100 ohm 0 15V to 10V 1000 ohm 3V p p 5000 ohm 1 4 TRS Tip CV Ring Refer...

Page 12: ...MIDI Output protocol processor sampling board programming MIDI over USB 32 bit ARM Cortex M4 MK20DX128 48 MHz 16 bit ADC Teensy 3 0 Arduino capatible Teensyduino w halfkay bootloader ...

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