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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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Table of Contents Introduction..................................4 Installation.................................... 4 Power requirements..............................4 Inputs and outputs................................5 Controls....................................5 Calibration.................................... 7 Where to get help................................7 Acknowledgments................................7...
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“sum” switch (which inverts the fltered signal, giving a diferent favour of phasing). Beatrix will self-oscillate at high feedback if desired, though the front panel control is factory- trimmed to stop just short of self-oscillation.
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“+” position. Below are screenshots of a spectrum analyser showing the efect of white noise passing through Beatrix with various settings. In all cases, Frequency is set to 5 and Depth to 10.
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Feedback at 0, switches at “1” and “+”: Feedback at 0, switches at “1” and “-”: Feedback at 8, switches at “1” and “+”: Feedback at 8, switches at “0” and “+”:...
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Calibration There are two trim pots on the Beatrix PCB, as shown below: “RV6”, marked “Feedback”, scales the depth of the feedback control. It is factory-trimmed so that the feedback control turned fully clockwise doesn't quite send the module into self- oscillation.
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