... ground stacked as required.Features: * Large scale, three-way line array element * Patented acoustic lens * 1.4" ... Fixed Installations Specifications Type : Large scale, three-way line array element Frequency response : 50HZ-20KHZ ±3dB ... and neodymium magnet ,horn loaded 1 x 1.5" (36mm) exit neodymium magnet compression drivers, ... 368mm x (D) 540mm Weight 55kg 3-way Line Array Ourdoor Speaker LA212