A properly designed linear array can have enormous benefits in many applications, especially in problematic venues. The Apogee Linear Array Series is an intelligent and practical implementation of both the line array principle and the doublet principle.

Each ALA model behaves similarly, but scaled in size to perform optimally in a specific range of applications.

An Apogee Linear Array behaves quite differently from a conventional loudspeaker. Each Linear Array enclosure is really a modular component of a complete system. Modules are designed to be used in multiples; thus, a system might consist of three or four modules as a minimal configuration, and as many as ten, twelve, or more, in order to obtain the desired power and coverage needed for larger venues.

The primary benefits of the linear array are the extremely narrow vertical coverage angle of each module and the seamless acoustic transition between multiple units. Low frequency pattern control is obtained by the "line array effect" which occurs when multiple units are used together.

By starting with a narrow vertical angle, a properly constructed array produces the exact coverage required and nothing more. Modules may be assembled in 'flat-pack' formations, 'tight-pack' formations, or combinations of both. When tight-packed, each additional module adds 10 degrees of vertical coverage. Flat-packing the modules adds 5 degrees, plus 6 dB of additional forward radiated power. In either case, it's easy to calculate the obtainable power levels and the resultant dispersion pattern.

The predictability of the system gives the designer the means to accurately direct the acoustical energy to the audience areas, but not beyond. This precise pattern control eliminates unwanted spillage onto ceilings, floors, walls, and other surfaces, which would otherwise cause destructive reflections.

The pattern in the mid and high frequencies is obtained by a coupling of multiple waveguides in each enclosure. This coupling sums the forward radiated power while narrowing the vertical dispersion. Low frequency vertical pattern control is governed by the total size of the array, and as modules are added, the control extends to lower and lower frequencies.

Horizontal dispersion in the high frequency range is controlled by the HF horn flares (horns are available in either 60 degree or 90 degree formats). Horizontal dispersion in the low frequencies is achieved by a refinement of the doublet principle. The precise spacing and angulation of the paired cone drivers produces a well-defined directional pattern that maximizes forward radiated power while attaining superb off-axis rejection. Crossover points are carefully chosen to avoid destructive cancellation in the upper frequencies.