Set-Up And Operation - Lab.gruppen LUCIA 120/2 Kurzanleitung

Set-up and Operation

Auto Standby / Power-up
LUCIA amplifiers do not have a power switch. The amplifier will turn
on automatically when AC power is connected to the unit; it will go
into standby mode if no signal is present at any input for 20 minutes.
When in standby, the amplifier will power up in two seconds when a
signal above the preset threshold (-54 dBu default) is present at any
channel input.
GPIO Configuration: Two Ouput Low Impedance Models
Default functionality is as described below for General Purpose
Inputs and Output (GPIO).
Remote volume control – The default functionality for the GPI is
independent control of output volume; please note that this control is
in series with the control of from the front panel. There are two ways
to do this:
• Connect a GPO from a control device that outputs 0 – 3.3 V
for control. Their grounds also need to be connected; see full
Operational Manual for further instructions.
• Connect a remote volume control potentiometer per channel to
pins 1 through 4 of the GPIO connector as shown below.
(The Vcc voltage output is 3.3 V).
Amplifier status – Pins 5 and 6 connect to an internal relay to
provide amplifier fault indication. The relay is closed when the
amplifier is on and operating normally. The relay opens if a fault in
either the output channel(s) or in the power supply interrupts normal
operation of one or both channels.
Optional GPIO modes – The Matrix models allow other GPIO
functions to be enabled by applying changes to the amplifier
firmware. See the full Operation Manual for more information.
R
R
Individual volume control
GPIO Configuration: One Output 70V Models
The Default functionality is as described below for General Purpose
Inputs and Output (GPIO).
Remote volume control – Connect a remote volume control
potentiometer to Ground, GPI1 and Vcc as shown in the diagram
following. Volume control is after input mixing. (The Vcc voltage
output is 3.3 V).
R
Common volume control
Amplifier wake-up – Connect an external contact closure to
Ground and GPI2 as shown in the diagram following. Wake-up
happens within 0.5 s after contact closure.
R
DSP/Matrix Configuration
The LUCIA models include a mix matrix and a comprehensive suite
of DSP features. In nearly all applications for this type of amplifier,
the included features eliminate the need for an external mixer or
processing unit. Also, the default DSP and matrix configuration
allows "out of the box" installation with no further configuration
required for many typical applications.
Default preset – The default matrix and DSP configuration is as
follows for the M models:
SPEAKER 1 = IN 1; volume attenuated with GPI 1 (and front knob)
SPEAKER 2 = IN 2; volume attenuated with GPI 2 (and front knob)
Out 3 = In 1 (-6 dB) + In 2 (-6 dB); volume attenuated with GPI 1
Out 4 = In 1 (-6 dB) + In 2 (-6 dB); volume is not affected by GPI
Software download and installation – Very intuitive configuration
software is available that allows selection of which preset to use
(optimized for different loudspeakers) and what dynamics processing
to use. This application is available for free download from
www.labgruppen.com/support. Follow installation instructions on
the "Read Me" file included with the download.
USB connection – A USB connection is provided for firmware
updates and downloading presets to the LUCIA. For complete
information please refer to the full Operation Manual.
Custom configuration – Please refer to the full Operation Manual
for detailed information on custom configuration of DSP functions
using the LUCIA configuration application.
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