Pittsburgh Modular Microvolt 3900, Manual

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5. Internal Signal Routing
The Microvolt 3900 utilizes internal connections to create a fully patched synthesizer voice that does not require
patch cables to play. To modify the internal routing or to create something completely new, all of the internal
routing can be bypassed using the patch panel. This allows total patching freedom without the constraints of a
fixed voiced architecture.
Most internal connections are made using switched jacks. A switched jack allows the internal signal path to be
cut when a patch cable is inserted. A simple example would be the pitch input of the voltage controlled oscillator.
Internally, the pitch output of the midi section is wired to the switched jack input of the voltage controlled
oscillator. When a patch cable is plugged into the pitch input of the voltage controlled oscillator, that patch cable
breaks the connection to the midi pitch output and replaces it with the signal from the inserted patch cable.
The internal signal routing of the Microvolt 3900 is clearly marked on the panel using arrows and lines pointing
toward the signal destination.
Plugging a patch cable into an internally patched input jack will override any
internal patching.