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ET-4.2
user manual

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Summary of Contents for therevox ET-4.2

  • Page 1 ET-4.2 user manual...
  • Page 2 Therevox builds custom musical instruments in Tecumseh Ontario Canada. ET-4.2 The ET-4.2 was designed and constructed user manual 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: Table Of Contents

    contents Playing Switches Oscillators Filter and Reverb Effects Loop and Phones Power and Outputs Exp and CV Jacks Care Technical Info...
  • Page 4: Playing

    The ET-4.2 is a continuous pitch analog instrument. Sounds are produced 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: Switches

    switches The Keys The Ring A tuner can be connected to silently verify and osc 1 osc 2 modify tuning of either oscillator at any time. The tuner output switch selects which tuner output oscillator to tune. By varying the pressure on each of The ring controls the pitch of the Synching oscillator 2 will force the waveform the intensity keys, you create...
  • Page 6: Oscillators

    oscillators Sine Wave Ring offset is the master tuning control for both Triangle Wave oscillators and the external ring CV. ring offset Rectified Sine osc 1 Oscillator 2 can be tuned independently using the osc 2 offset control. This control can also be used Square Wave to detune or offset the pitch of oscillator 2 to any harmonic interval of oscillator 1.
  • Page 7: Filter And Reverb

    Reverberation is generated by sending the sound audio signal into the ET-4.2. Adjust the level using the through a series of springs inside the ET-4.2. The return/ext level knob. A red light will indicate if the signal dry+reverb mix knob controls the blend between level is too high and creating distortion.
  • Page 8: Power And Outputs

    16VAC The ET-4.2 is powered by a 16VAC 1000mA adapter. An expression pedal can be used to control the filter cutoff frequency. Use a 1/4" TRS plug with an appropriate pedal. The exp input can Osc 1+2 is a stereo TRS output with each oscillator on a separate also accept an external CV within 0 and +10V.
  • Page 9: Care

    Your instrument has been calibrated and tested by Therevox. Please contact us if you have any questions or comments. Tune Out -> exp : use osc 2 as an LFO by setting it to "Low"...
  • Page 10: Technical Info

    technical info Power voltage: 16V AC 1000mA. (Not DC!) input: 2.1mm barrel type. Ring CV voltage: 0 to +6V @ 1V per octave. impedance: <100 ohm. Key CV voltage: -0.15V to +10V. impedance: 1000 ohm. Audio Output voltage: 3V p-p. impedance: 5000 ohm.

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