LA Series Amplifiers

Amplification
The four amplifier channels driven by two inputs provide optimum
system flexibility. The LA4 and LA8 offer two specific power ranges
(4 x 1000 Watts into 4 ohms per channel, and 4 x 1800 Watts into
4 ohms per channel respectively) yielding perfect power matching
for each individual L-ACOUSTICS loudspeaker system. The built-in
technologies allow for control of the very wide dynamic range found
in live audio productions while the high-efficiency components offer
superior reliability all from a sleek ergonomic package with exceptional
weight/size ratio.

Accessible via “LA NETWORK MANAGER” and front-panel user interface
depending on preset type
L-ACOUSTICS parameters

User Interface
The front panel user interface features extremely fast access to editing
the 2 input and 4 output settings. The rotary encoder gives instant access
to the user menus and the LCD display offers real time visualization of
the system parameters.

Command access includes mute, gain, preset selection, plus delay
and polarity settings. Navigation through the menu pages is fast and
intuitive. Beside the standard on board preset library the engineer can
design and store his own settings (initialised from a standard preset
template) in one of the 10 available user locations.

System Configurations
Driving four amplifier output channels through a DSP offers a wide
range of options when it comes to system configuration possibilities.
The LA4 and LA8 onboard DSP preset libraries allow the Sound
Engineer a high degree of flexibility.

The factory preset library is derived from 6 basic system templates.

The L-ACOUSTICS loudspeaker preset library is managed between
the two LA4 and LA8 platforms and the preset allocation for both
determined by model, configuration, and application choice.

For example, the LA4 factory preset library covers L-ACOUSTICS
loudspeaker systems that require up to 800 Watts into
8 ohm load or 1000 Watts into 4 ohms in twin parallel transducer
configurations. The LA8 factory preset library covers L-ACOUSTICS
loudspeaker systems with power requirements typically up to
1100 Watts into 8 ohms or 1800 Watts into 4 ohms in twin parallel
transducer configurations.


L-NET Remote Control
Network
The proprietary L-NET network utilises a high speed data transfer of
100 Mbit/sec for real time monitoring and controls each individual LA
controller preset in a network of up to 253 units. Multiple network
topologies such as daisy-chaining, star, and hybrid, are quickly and
easily configurable allowing for total flexibility in achieving the required
system architecture. The physical connection between the mainframe
PC and the controllers is managed with CAT5e STP cables and the I/O
Ethernet sockets located on the rear panel of the controller require
industry standard RJ45 connectors. The use of a universal Ethernet
switcher is recommended for specific network topologies.

Digital Audio Network
Both the LA4 and LA8 are provided with a slot located on the rear
panel designed to accept an optional L-DGA network digital audio card.
The slot allows for the provision of an additional digital input module
consisting of a 64 audio channel bus plus one extra channel dedicated
to control and monitoring. The extremely low and predictable latency
of this technology combined with proven real world reliability delivers
stable and predictable results in all sound reinforcement applications.
The L-DGA card also allows for cascading of several LA4 and LA8 using
the same type of cable as for the L-NET remote control network. The
signal routing on the digital audio bus into any LA controller can be
operated from the LA NETWORK MANAGER application.

LA NETwoRk MANAgERPC Software
The application provides network control and monitoring of both
LA4 and LA8 controllers from a PC Windows®-operating system.
The multiple window display gives an overall visualization of the
network status, number and groups of controllers, and all
the information related to the control and monitoring of the
networked units.

Real-time control for parameters such as gain, mute, delay,
polarity, presets, either on individual units or at network
level are managed on a “tree layout” screen interface with
standard drop down menus and multiple visualisations of all
user parameters. An exclusive contour EQ optimization tool
is also available allowing quick and easy tonal balancing of the
loudspeaker system.

LA NETWORK MANAGER provides system stand-by and
initialization control in addition to comprehensive visual
monitoring of the audio signal paths and quick
detection of any faults in the attached network.