5.0 EVF and EVH Rigging System (cont’)

5.23 HRK Kits and Horizontally Rigged Clusters

The main difference between the HRK and the VRK rigging kits is the addition of a tie plate in the center of the rigging plate. Tie plates are identified in Figure 22.

Main suspension lines and pull backs must be tied to the tie plates.

Enclosures may be suspended below using the HRK rigging kits. Connection between the enclosures through the tie plates within the HRK kits requires hardware supplied by the end user. All user-supplied hardware must be rated for overhead lifting. The angle between the two enclosures as well as the angle between the first enclosure and the structure can be controlled by the length of the user-supplied hard- ware. If the desired angle cannot be achieved by varying the length of this hardware, then pull-back points can be used. It is recommended that both the top and the second box use a pull back. A pull back can be achieved through the use of attachment to the tie plates. Stabilization can be achieved through the use of M10 eyebolts at the back of the enclosures. The hardware used to achieve the pull back is supplied by the end user.

A basic two-over-two cluster is shown in Figure 22.

Note that the HRK kits are designed to make weight-symmetrical clus- ters, i.e., those whose left-to-right center of gravity is in the center of the cluster.

The following components are needed to achieve this cluster:

1.Two HRK-1 horizontal rigging kits for EVF to EVF.

2.User-supplied hardware to link the upper cluster to the lower cluster.

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Electro-Voice EVF/EVH User Manual

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Electro-Voice EVF-1121S, EVF-2121S, EVH-1152S, EVF-1152D, EVF-1122D, EVF-2151D HRK Kits and Horizontally Rigged Clusters
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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.
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