L-ACOUSTICS LA8 [52/56] La la la la888

Most of the protection systems that ensure the integrity of the unit’s electronic vital parts are managed by the

Operating System (OS). This allows real-time monitoring and optimal performance with a high level of safety even

under extreme conditions.

The fans associated to the heat sinks operate permanently, but as long as the temperature remains below 40 °C they

run at their slowest speed and can hardly be heard. The highest detected temperature controls the speed of the fans.

Above 40 °C the speed is increased until it reaches its maximum value.

If the OS detects a temperature of more than 85 °C at the heat sinks the input signals delivered at all amplifier output

(due to the over-current protection of the SMPS controller) the amplitude of the input signals will be limited.

Each of the four amplifier channel outputs is monitored at all time for sustained presence of DC voltage above the 3 V

threshold. If such threshold is exceeded for a long time the concerned output channel will be automatically switched off.

The LA8 amplified controller uses an auto-sensing SMPS for mains input voltages 120/230 V (LA8 or LA8US) or 100/200

The mains supply is monitored at all times for mains cycles discontinuity. If the mains supply skips about 2 cycles the

auto-sensing SMPS will switch off. A soft start sequence will be automatically engaged when the mains supply returns to

nominal state.

The amplified controller main SMPS current is continuously monitored. If an over-current is detected the main SMPS is

immediately switched off. Should there be an internal failure this feature prevents other parts from being damaged.

The output stages also are continuously monitored for possible current surges. There are two limiting levels of over-

The L-DRIVE transducer protection system provides a dual analysis of both signal intensity and voltage in real-time and

RMS. Under extreme conditions, when component membranes reach the over-excursion zone or if the coil ensemble

temperature reaches a critical point, L-DRIVE is activated and acts as a power regulator.

As a result, the amount of power delivered to each channel is adjusted to the power handling capacity of each individual

transducer on the relevant channel. Thereby, this optimizes the power resources of the system in use while preserving

the highest available dynamic range.