Rigging the Installation Line Array

Introduction (continued)

Figure 6: GS115-sw Ground Stack Kit

1- Rail

2- Rubber foot

3- Attachment holes

Rules for Suspension

•Correct use of all suspension hardware and components is imperative in sound system rigging and deployment.

•Always calculate suspended loads before lifting to ensure suspension components and hardware are used within their respective load limits.

•Research local codes and regulations to fully understand the requirements for suspended loads in the venue in which the equipment is to be suspended.

•Use only shackle holes for suspension of array.

•Be absolutely certain of the integrity of any structural member intended to support suspended loads. Hidden structural members can have hid- den structural weakness.

•Consult a Professional Mechanical or Structural Engineer licensed in the jurisdiction of the sound system installation to review, verify, and approve all attachments to the building or structure.

•Never assume anything- Owner or third-party supplied suspension attachment points may not be adequate for the loads to be suspended.

•Employ the services of a Professional Rigger for hoisting, positioning, and attaching the equipment to the supporting structure.

•Always inspect all components (enclosures, suspension brackets, pins, frames, bolts, nuts, slings, shackles, etc.) for cracks, wear, deforma- tion, corrosion, missing, loose, or damaged parts that could reduce the strength of the assembly before lifting. Discard any worn, defective, or suspect parts and replace them with new appropriately load-rated parts.

Shock Loading

When a load is either moved or stopped, its static weight is magnified. Sudden movements can magnify the static weight several times. This magnification of static weight is termed "shock loading". Shock loading poses a danger to equipment and workers. The effects of shock loading can be instantaneous, or they may remain undetected unless the equipment is visually damaged. Avoiding shock loading requires careful plan- ning and knowledge of equipment, rigging, and lifting practices.

Shock loading of equipment and structures is usually confined to lifting and installation, but natural forces (winds, earthquakes) can impose shock loads several times the static load. This is why structures and suspension equipment must be capable of supporting several times the weight of the equipment suspended.

ILA Working Load Limits and Design Factors

Table 1 lists the ILA suspension components and provides Working Load Limit data at various Design Factors. The tabulated Design Factors are for static loads only. The choice of which Design Factor to use will depend upon the jurisdiction and venue of installation, as well as the condi- tions of suspension. Dynamic conditions are determined by unknown, installation-specific factors and should be referred to a Licensed Structural Engineer for clarification before proceeding with any suspension of the equipment. The data presented is based upon the listed component weights:

EB2082-I, GS115-SW, FB2082-I, WL115-SW, PB2082-I specifications

QSC Audio is renowned for its high-performance audio solutions, and the FB2082-I, PB2082-I, EB2082-I, WL115-SW, and GS115-SW models showcase this commitment to excellence. Each of these products offers unique features and characteristics, making them ideal for various professional audio applications.

The FB2082-I is a full-range loudspeaker designed for permanent installation in venues such as theaters, auditoriums, and houses of worship. It features a dual 8-inch low-frequency driver and a 1-inch compression driver, providing robust sound reproduction with exceptional clarity. Its weather-resistant enclosure allows for outdoor use, making it a versatile choice for any setting. Integrated mounting points simplify installation while ensuring optimal performance.

The PB2082-I takes versatility a step further, offering a similar dual-8 configuration but with the added benefit of pole-mounting capability. This feature makes it suitable for mobile applications such as concerts or corporate events. The robust design and high-frequency response make the PB2082-I an outstanding choice for those needing flexibility without compromising quality.

For outdoor environments, the EB2082-I stands out with its enhanced weatherproofing. This model is specifically engineered to withstand harsh conditions while delivering high-quality audio. Its passive crossover network optimizes frequency distribution, ensuring that sound remains consistent, even over long distances.

The WL115-SW subwoofer completes the setup, delivering powerful low-end frequencies with its 15-inch driver. Ideal for both touring and fixed installations, it offers exceptional sound pressure levels and deep bass response. The included integrated rigging hardware allows for efficient deployment in various configurations.

Finally, the GS115-SW is designed for installed applications where space is at a premium. This compact yet powerful subwoofer also features a 15-inch driver but is optimized for tight spaces without sacrificing performance. The GS115-SW is perfect for smaller venues or rooms that demand a full-bodied sound while maintaining aesthetic appeal.

In summary, the QSC Audio FB2082-I, PB2082-I, EB2082-I, WL115-SW, and GS115-SW represent a sophisticated blend of technology, design, and performance. These models cater to diverse applications, ensuring that sound professionals have the tools they need to deliver outstanding audio experiences, whether in fixed installations or mobile setups. Each speaker is designed with durability, performance, and versatility in mind, making them essential components for any audio system.