High frequencies attenuate rapidly over distance through the air. Apply a high-frequency boost (parametric shelving above 8 kHz) specifically targeted at the long-throw boxes at the top of the array.
Designing an effective line array box requires more than just building a box around a speaker. The physics of sound propagation in line arrays demands precision. 1. Cabinet Geometry and Structural Rigidity
Sound pressure level (SPL) drops by 6 dB per doubling of distance.
As you couple multiple 12-inch boxes together, the low-mid frequencies will naturally build up due to mutual coupling. You must program a low-mid shelving reduction EQ in your DSP that scales with the size of the array.
Ranges from 130 dB to 145 dB peak, depending on whether it is a single or dual 12-inch configuration.
Rigging is not an afterthought. Suspending heavy speaker cabinets above audiences requires professional-grade hardware, certified load ratings, and rigorous safety practices. When in doubt, consult a qualified rigging professional.
Dual compression drivers with a dedicated line-source waveguide. Finish: High-durability polyurea coating. Safety: Certified rigging points and quick-release pins.
The acoustic behavior of a line array is governed by two key principles:
Coat the exterior with a durable polyurea spray finish (such as Line-X or Warnex) for scratch and weather resistance. Use a CNC-cut, powder-coated steel grille backed with acoustically transparent foam to protect the drivers from rain and debris.
When finalizing your 3D CAD models (such as in SolidWorks or Fusion 360) to generate a printable PDF build plan, ensure the following sheets are included:
Line array enclosures are almost always trapezoidal. This shape allows the boxes to be splayed at varying angles to curve the array and cover specific audience areas.
All hardware must maintain a minimum 12:1 static safety design factor. Next Steps for Blueprints
