Expert Sleepers Persephone User Manual Download | Manualshive

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Copyright © 2021 Expert Sleepers Ltd. All rights

reserved.

This manual, as well as the hardware described in it, is furnished under licence and may be used
or copied only in accordance with the terms of such licence. The content of this manual is
furnished for informational use only, is subject to change without notice, and should not be
construed as a commitment by Expert Sleepers Ltd. Expert Sleepers Ltd assumes no
responsibility or liability for any errors or inaccuracies that may appear in this document.

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Summary of Contents for Persephone

Page 1: ...User Manual Revision 1 0 persephone ...

Page 2: ...or copied only in accordance with the terms of such licence The content of this manual is furnished for informational use only is subject to change without notice and should not be construed as a commitment by Expert Sleepers Ltd Expert Sleepers Ltd assumes no responsibility or liability for any errors or inaccuracies that may appear in this document ...

Page 3: ...s Introduction 4 Installation 4 Power requirements 4 Inputs and outputs 5 Controls 5 Signal fow 6 Audio path 6 CV path 6 Use as a regular VCA 7 Zero cross detection 7 Calibration 8 Where to get help 8 Acknowledgments 8 ...

Page 4: ...uit engaged you can use a simple gate as the CV input without clicks The module s signal and CV paths are 100 analogue there is a little discrete logic involved in the zero cross circuitry Installation House the module in a Eurorack case of your choosing The power connector is 16 pin Doepfer standard1 If using the power cable supplied with the module the red edge of the cable is closest to the bot...

Page 5: ...CV input CV output Audio input Secondary audio input Audio output The two CV inputs are summed similarly the two audio inputs are summed mixed The Clip LED in the centre of the panel lights when the output exceeds 10V indicating that you ve most likely left the realm of soft saturation and are heading into harsh clipping Controls In addition to the CV attenuator there is a knob for the CV Bias exp...

Page 6: ...hat of reducing the level so it doesn t clip at the output The Asymmetry switch disables part of the circuit that linearises the behaviour of the VCA resulting in positive and negative sections of the input waveform being processed quite diferently increasing the even harmonic distortion The whole audio path is DC coupled CVpath The two CV inputs are summed one via the attenuator and passed to a S...

Page 7: ...of the zero cross feature consider the following in which an envelope with a very fast attack is being applied to a fairly low frequency sine wave The yellow trace is the CV input the magenta is the CV output The green trace shows the module s audio output In this image the zero cross feature is not enabled Notice how the audio waveform rises extremely abruptly as the envelope opens This would be ...

Page 8: ... that will occur at the start and end of each burst On the right with zero cross detection note how each burst begins and ends cleanly at zero Calibration A trim pot marked RV5 on the PCB allows for adjusting the VCA gain Persephone is factory calibrated so that the module gives unity gain with Bias set to 10 Pre set to 0 and Post set to 10 Wheretogethelp Email forum and social media links can be ...

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