• Protection: The speaker is protected against damage from over-excursion and power overload.
• Dedicated filtering: The fixed cross-over settings cater for the best system performance.
• Optimised power response: The SDP module adjusts the RMS and peak values to the speakers capacity, giving maximum system power output.
• System equalising: This circuit equalises the system response, with utilising the maximum component efficiency. This results in higher overall system sensitivity and reduces the need for active filtering while offering efficient amplifier usage (passive system).

By placing the modules in the slots, the SDP circuit is automatically activated, without the need for changing switches/jumpers (“plug&play”). Taking out the modules, bypasses the SDP circuit and converts the ALC into a “standard” stereo power ampli- fier, for use with traditional speaker systems.

Furthermore SIS maintains signal level by detecting the amount of signal loss at the end of the cable. As a result of pre-compensation of the self-induction of the cable, non-linear harmonic + intermodulation distortion are reduced substantially by SIS, while offering a more linear frequency response (reduced linear distortion).

SIS offers a significantly tighter and more accurate low and mid response. Without connection of the 2 extra sense wires, the ALC units can also be used as any normal amplifier in combination with non- SIS speaker systems.

The clip limiter section reduces the signal input level to the safest maximum level, when continuous clipping is detected. In this way the high frequency drivers are protected against damage from harmonics and also the amplifier remains cooler. The limiter has a “Soft-knee clipping characteristic” for inaudible, but safe operation.

ATCM offers ease-of-operation and guarantees operation under all conditions.

Through the 15-pin D-connection to remote processor, function includes indication of operating status; Temperature per channel, bridge/parallel mode, AC power level, output power read-out, impedance check for speaker damage, clip/protect indication, level control, etc.

For cinema application, the Data-port is completely compatible with existing D-pin connected cinema monitors. In that application, the signal in/out connection also caters for reduced set-up and installation time and standardised in/output levels.

All relevant switches (bridge and parallel input) are conveniently located on the front behind the cover. When switching to bridge-mode, there is no need for using different SDP modules. Furthermore, in bridge-mode, the amp is controlled by only one channel.

The parallel-mode input switch: With this switch, the input of channel 1 is also send to input channel 2. Therefore there is no need for external “loop wires” from link output 1 into input 2.

The ALC features PowerCon™ AC power connection, for quick and efficient exchange of rack mounted ALC’s.

The ALC2-ST is the “stealth” version of the ALC2. It has potentiometers that are located behind the front lid, preventing unwanted changing of gainsettings.