The X12A, X14A and X24A use advanced electronic circuitry to optimize the overall performance of their associated loudspeakers while protecting them from overload damage. The X12A is a single channel 2-way controller designed for use with two-way loudspeakers such as the SR and TRC Complex Conic loudspeaker systems or with 3- way CoEntrant loudspeakers set up for bi-amping with built-in mid/high crossovers.

The X-24A is a dual channel version of the X12A intended for use with the same loudspeakers in stereo systems. The X-14A is a single channel 4-way controller designed for use with 3-way loudspeaker systems or in 2-way and
 

3-way systems that also have subwoofers. All three controllers utilize individual crossover, response equalization/delay and protection modules to provide 3rd or 4th order electronic crossovers, preset parametric equalizers to smooth and extend the loudspeaker's frequency response and sophisticated loudspeaker protection circuitry. When needed, signal (time) alignment is also provided. These modules are plug-in to allow the controller to be easily reconfigured for use with other loudspeaker systems.

The complete crossover, response equalization and protection circuitry provided by these controllers eliminates the need for separate electronic crossovers, compressors and limiters. This simplifies system design and setup, cuts rack space requirements and reduces overall system cost while optimizing performance.

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The X12A, X14A and X24A feature sophisticated protective circuitry that unobtrusively protects the transducers against damage from overheating (thermal overload), over excursion and the deterioration caused by high level transients. Thermal protection is provided by a slow acting gain reduction circuit that prevents overheating without upsetting the system balance.

A power/frequency dependent gain reduction circuit is used to prevent low frequency over excursion damage. High level transient protection is provided by a unique limiter that ensures the highest possible dynamic range while preventing destructive signals from reaching the components. The limiter is entirely transparent and does not color the audio signal.

These controllers protective circuitry relies upon data received from sense lines connected to the power amplifier outputs. These lines are constantly monitored and if a sense line connection is broken, the controller senses that protection has been lost and "mutes" that channel. This prevents damage to the loudspeakers while the protective circuitry is not functioning because of the absense of a sense signal.

Color LEDs provide system status information at a
glance. Green status indicators are used to indicate
normal operation with red indicators reserved for malfunctions needing immediate attention.