Nucleus User Guide Page 1
Introduction
NUCLEUS
Welcome to Nucleus, SSL’s integrated DAW controller and soundcard. Nucleus allows you to record audio and monitor your
studio software through SSL’s legen dary analog ue circuitry and converters, while placing full control of your s ession
underneath your fingertips. While the basic configurations created by SSL’s studio engineers allow you to get working with
Nucleus straight out of the box, the functions assigned to much of the control surface can be adapted to suit the specifics of
your working environment, as configured within the Nucleus Logictivity Remote software.

DAW Control Principles

A DAW controller is part mixing console and part computer keyboard. It is a mixing console insofar as it uses channel strips
and faders etc. to mix and manipulate audio. It is a computer keyboard insofar as, rather than affecting any audio electronics
within it, it simply sends (and receives) commands to a computer program.
Of course, Nucleus’ two analogue channels makes it more than a DAW controller.
Nucleus can be used to control DAW software using either HUI or MCU protocols. These are the standardised c ontrol
‘languages’ used by the majority of DAW software on the market today: HUI is used by ProTools, MCU by Logic and Nuendo.
Please refer to your DAW software’s user guide if you are unclear which protocol you use.
The Nucleus control surface also replicates a number of computer keyboard keys, such as modifiers (
<Shift>
,
⌘
or ‘command’,
<Ctrl>
,
<Alt>
),
<Enter>
and
<Esc>
keys, and shortcuts such as ‘Save’ and ‘Undo’. Nucleus uses two connections to control
DAW sessions: ipMIDI (a conventional MIDI signal, sent over Ethernet) for HUI or MCU control, and USB for standard keyboard
commands.
Using Nucleus’ Layer structure, different DAW programs can be connected simultaneously. Only one can be controlled at one
time, though all transports can be controlled simultaneously from one transport master.
Because each DAW is different and the precise application of HUI and MCU protocols is specific to the DAW software being
used, this manual does not provide detailed descriptions of specific DAW operations. Please refer to your DAW User Guide
for information about how to apply the control offered by Nucleus.