Audison LRX12k Description

LRx 1.2k is a mono amplifier which can work even with impossible loads, such as the subwoofer section of very high sound pressure level systems. Its reduced size conceals extraordinary energy reserve. The amplifier is a technology concentrate, with the innovative ECI input signals handling and special
functions like subwoofer volume remote control.
More than 1000 W (RMS) into 1 ohm, controlled by AMP, the exclusive microprocessor circuit, can meet any current demands. Power, control and
outstanding final stages are necessary to unbelievable bass and extraordinary musical quality on the whole frequency range.

ECI - Easy Common Interface - Connection versatility Two modules to meet any demands of connection to any source. The modules, equal for all amplifiers, act as input or output, according to the model, bypass or filtered preout signals. Besides being interchangeable, these modules are reversible and allow both the standard connection or the one with the contacts facing the amplifier inside. ECI-H automatically activates ART - Automatic Remote Turn On-Off, which turns on and off the amplifier according to the source, without the need of a remote signal and without troublesome bumps or delays, typical of traditional systems switching off. It can also generate a preamplified signal on the RCA outputs from the input high level one. ECI permits to widen every factory system without limits.

Easy Set Up - Easy configuration Practical examples guide the creation of a system. Choose a system, a simple two channel front or a multiamplified, multichannel one, driven by a single stereo signal or by complex external processors; you will be able to build it through the use of pre-drilled cards and the help of detailed owner’s manuals. Installation is guided step by step, for achieving maximum performance and results. Everybody can configure the most difficult system without mistakes thanks to these diagrams.

SAF - Smart Air Flow - Beyond thermal limits The cooling system concerns the heat sink exterior and its interior. A fan is in the heart of the circuit; its rotation speed, electronically controlled by AMP, changes according to the amplifier working temperature. The higher the demanded power is, the more heat will be generated, the faster the fan speed will be. Forced air flow improves cooling; it takes air from the outside and pushes it where it is more needed, until it comes out again through the proper ducts and carries excessive heat with it. SAF insures maximum thermal capacity and, thus, power.

HCI - Hidden Cables Installation The mistery of disappearing The installation of an amplifier with protected, hidden cables is no longer a dream because LRx was designed for this, too. The amplifier fixing holes are inside its outline and covered when installation is over. Power supply terminal blocks can accept cables up to 2 A.W.G. (33 mm2); their shape has the cable and its jacket bend of almost 90°. ECI reversibility locates the signal connectors in an invisible place. Two special hollows in the bottom allow the signal cables routing; cables can be fixed through clips.

AMP - Amplifier Management Processor - Controlling the elements LRx electronics controls a powerful heart. A microprocessor constantly analyses voltage and current, signal and temperature, to supply the maximum and the best power in every condition and moment. Music best, possible reproduction: this is the goal to achieve. AMP is much more than the amplifier handling system; it activates several functions which monitor and protect the installation: power supply system, speakers, wiring and source. The working temperature affects the components functioning; AMP reads its value, electronically carrying out its thermal stabilisation and indicating the achievement of thermal limits while the amplifier can safely go on supplying power. In case of speakers systems which tend to overload the output stage, AMP acts by limiting power supply voltage. The audio signal dynamics and original quality are never affected, while the amplifier supplies as much power as possible.

MSC - Modular Soundproof Construction - The separation of contents The amplifier is designed in a modular way. Its motherboard has oversized paths, which are routed not to interfere with the audio signal, and only houses passive power components and service circuits. The connections between output stages and speakers terminal blocks run along the printed circuit board side ends, passing behind the modules where BJT output transistors are assembled. This way the right and left channels of every section are one as far as possible from the others, to the advantage of stereo separation. All the drivers, from power supply to final stages ones, are on SMD modules. The preamplifier/controls/crossover section is built on a special printed circuit board. The separation of signal control circuits from power supply and power ones prevents every possible interference. Power supply stage is PWM stabilised. Thanks to its high ability of supplying current and to the use of MOSFET’s of 70 A each, it is possible to easily drive even the most difficult loads, with valued tonal accuracy and first-grade acoustics. Services - The importance of knowing limits Expansion potentialities are endless. ECI modules efficiency is completed by the sockets functionality. When you connect the cables of a factory speaker to SPK ON socket, you activate ART function even if ECI-H input module is not used. The amplifier will automatically turn on and it will repeat the turn-on signal, which will be supplied to other electronic devices in the system. When they are configured for driving a subwoofer, all the LRx’s can be adjusted thanks to ESV - External Subwoofer Volume, by connecting VCRA, a volume remote control, to the special SUB VOL socket.