Description
The LA212x is a 3-way, horn-loaded, axially symmetric line array element providing 90-degree horizontal constant dispersion control. The symmetric design results in virtually identical acoustic sound patterns on the right and left, affording easy, accurate alignment.
The bass section makes use of two 12” neodymium woofers with 3” voice coils that are strategically placed on either side of the speaker in a dipolar horn arrangement. The horn mouths are horizontally separated by a “tuned” distance that uses the Tuned Dipolar Array effect to achieve exceptional low frequency horizontal dispersion control with the nominal angle being maintained down to 280 Hz.
The mid and high frequency sections, also horn-loaded, are coaxially mounted in the center of the cabinet, extending lower vocal directivity control and providing smooth mid/high transition. The mid-frequency horn uses a 10” driver mounted coaxially behind the HF drivers, loaded by a mathematically complex, directivity control device that eliminates the HF section acoustic “shadow.” Due to the physical diameter of 10” driver it is impossible to achieve interference-free, close coupling of wave sources at the frequencies necessary to crossover with HF drivers, so a proprietary Wave Splitter device was developed.
The Wave Splitter causes the 10” driver to behave as twin adjacent 5” drivers mounted at half the physical distance. The distance between these adjacent virtual drivers is close enough to couple coherently in the vertical plane extending the upper frequency limit for line source behavior, projecting sound waves farther than traditional systems with a more evenly distributed sound output pattern.
In addition, the mid-frequency section employs a Correction Phase Device which equalizes speaker cone’s acoustical path lengths and thereby minimizes high-frequency cancelation and distortion caused by phase differences, greatly increasing the speaker’s ability to produce clear, accurate and “vocals-in-the-face” realistic sound. This device and the associated horn are optimized to create a high compression ratio which rises conversion efficiency to reach a sensitivity of 115 dB at 1W/1m full space.
The high-frequency section consists of two 1.4” exit HF compression drivers with 2.5” voice coils mounted to a dedicated wave-shaping device. This unit is carefully designed so that each path-length from the throat to any part of the mouth is precisely identical, which provides accurate high frequency summing and the generation of a flat, isophasic wavefront.
The wave then exits by a diffraction slot to a constant directivity wave guide that spreads out evenly across the horizontal plane, producing a cylindrical wave that couples coherently, with minimal lobing, in the vertical plane while uniformly disperses on the non-coupling, horizontal plane.
To preserve the acoustical integrity and the natural warmth, all the horns, wave guides and phase correctors are made of low resonance plywood or acoustically neutral polymers.
FEATURES
- Fully horn-loaded, axially symmetric, Line array
- Extreme SPL and throw capability
- Uniform dispersion and great coverage control
- Horizontal Coverage maintained down to 280 Hz
- Easy and fast rigging system with variable splay
