6.0 Rigging-Strength Ratings and Safety Factors (cont’)

6.32 Suspension-Line Angles

Refer to Table 9 and Figure 25 for specific eyebolt angle and weight limitiations when using all-eyebolt clusters. These limits are not to be exceeded under any circumstances. If a higher safety factor than 8:1 is required, the angle limitations for each eyebolt may actually decrease to a number less than what is shown in Figure 25.

Always make sure that the suspension line is in the plane of the eyebolt, as shown in Figure 17. Readjust the eyebolt during the installation if necessary to maintain this alignment.

Figure 26a:

Figure 26b:

All-eyebolt suspension-line angle limit,

All-eyebolt suspension-line angle limit,

independent suspension lines

bridled suspension lines

6.33 Left-to-Right All-Eyebolt Cluster Angles

 

The suspended all-eyebolt cluster must be perpendicular (plumb) to within ±5° as shown in Figure 27.

Figure 27:

Left-to-right angle limits for an all-eyebolt cluster (angle shown exaggerated for illustration purposes)

Electro-Voice EVF/EVH User Manual

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Electro-Voice EVF-1152S, EVF-2121S, EVH-1152S, EVF-1152D Suspension-Line Angles, Left-to-Right All-Eyebolt Cluster Angles

EVH-1152S, EVF-1152S, EVF-1122S, EVF-1122D, EVF-1152D specifications

Electro-Voice is renowned for its high-quality audio solutions, and the EVF series embodies this commitment. The EVF-2121S, EVF-1121S, EVF-1181S, EVF-1151S, and EVF-2151D are a collection of loudspeakers designed for a variety of professional audio applications, each with its distinctive features and capabilities that cater to different sound reinforcement needs.

The EVF-2121S is a dual-12-inch full-range speaker that combines exceptional power handling with a wide frequency response. It utilizes a coaxial driver arrangement, providing even sound distribution and a cohesive audio experience. This model is ideal for medium to large venues, offering a robust SPL (sound pressure level) output and clear reproduction of vocals and instruments.

In contrast, the EVF-1121S features a single 12-inch driver, delivering precise, high-impact sound suitable for smaller spaces. Its design emphasizes clarity and detail, making it perfect for live sound applications. The compact and lightweight design also ensures ease of transport and installation, appealing to mobile sound reinforcement professionals.

The EVF-1181S is a dedicated subwoofer that amplifies low frequencies, featuring an 18-inch woofer for deep, powerful bass response. Its extended low-frequency output enhances the overall sound experience, making it an ideal choice for high-energy music events and professional club environments. Designed with rugged construction and efficient power handling, the EVF-1181S is built to withstand demanding conditions while delivering reliable performance.

The EVF-1151S combines a 15-inch woofer with an advanced high-frequency driver for a full-range sound that works well in theatres, concert halls, and corporate events. The speaker ensures clear mid and high frequencies, maintaining vocal intelligibility even in challenging acoustic environments.

Lastly, the EVF-2151D is a dual 15-inch subwoofer that enhances overall system performance with its ability to produce deep bass. Its compact enclosure design allows for seamless integration into various sound setups, ensuring it can meet the needs of both portable and installed sound systems.

All models in the EVF series incorporate advanced technologies, including proprietary transducers and custom-engineered waveguides, which contribute to their impressive performance. With features like durable enclosures and efficient power handling, these loudspeakers are engineered to provide reliable sound reinforcement for both live and recorded applications. Whether it’s a concert, event, or installation project, the Electro-Voice EVF series stands out for its versatility and audio excellence.