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Laka Sequential Voltage Processor + Mixer User’s Manual for Eurorack Copyright 2022 SetonixSynth. All rights reserved. Revision May 2022...
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1. Connecting your Laka Connect a power cable to the pin header at the top of the Laka pcb. The -12V side of the connector should be facing downwards, and must be aligned with the silkscreen stripe indicator for proper use. This module is reverse diode protected, but we do not recommend that you plug it in backwards to see what happens.
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Eurorack modular, with a generous helping of fun and style! 3. Summary of Functions Laka signal flow diagram. Voltage Processor section: A, B, C, D (Upper): DC Coupled voltage inputs. Accepts input signals of up to approx. +/-11.5V and routes them to the four Voltage Processor channels.
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voltage range. Analog, baby! To create the most stable “stepped” voltage possible if required, engage the “Zero” switch on the channel to disable the fader and use the channel Offset knob to dial in a voltage output from +5V to -5V. OFFSET: Adds an adjustable voltage offset of +/-5V to the Channel and Mix/Submix output directly below it.
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"Voltage Fader Bank" The most simple thing Laka can be used for. Good for testing that Laka is working. With nothing patched to any input and the “Zero” faders switched to the upwards/on position, +5V is normalized to Input A via a series resistor and thus each fader may be used to provide a variable voltage offset, with the “window”...
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“Command Center” Patch four important audio or CV sources into the four Channel outputs of Laka. Patch the single Channel outputs to their typical destinations, then patch the Submix and Mix outputs to some of those secondary parameters on that new module you’ve been meaning to explore.
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(including an “audition” function, here presented as the Sequential section), with the wide range of control and flexibility that comes with a good console. Laka in its final form would not have been possible without circuits and ideas pioneered and/or generously shared in various forms by Serge Tcherepnin, Ken Stone/CGS, and Fonitronik, plus countless others.
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Output A to the 1V/Oct input of your favorite oscillator and tune by ear. Repeat for the other three channels until you are happy with the tuning. That’s all for now. Thanks for taking the time to read this manual! -Jack S. / SetonixSynth...
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