Introduction | Electro-Voice EVF-2151D, EVF-2121S, EVH-1152S

1.0 Introduction

The Electro-Voice EVF series is a group of compact two-way front-loaded full-range systems, available with 12- or 15-inch woofers, augmented by low-frequency and subwoofer systems. EVF full-range sys- tems are available in two versions. The “S” versions employ 400-watt SMX low-frequency transducers and the ND2B medium-format, 1.4-inch exit/2-inch diaphragm compression driver. The “D” versions em- ploy 500-watt DVX-A low-frequency transducers and the DH7N large-format, 1.4-inch exit/3-inch dia- phragm compression driver. Both compression drivers have neodymium magnetic structures. In general, the premium components in the “D” versions provide lower distortion and reduced power compression.

The EVH series is a group of larger two-way horn-loaded full-range systems. Both the “S” and “D” EVH versions use SMX low-frequency transducers. The “D” versions substitute the DH7N large-format com- pression driver for the ND2B medium-format driver.

All full-range systems utilize high-order crossover networks that seamlessly integrate the low-frequency transducers with the high-frequency compression drivers, providing very low distortion and excellent fre- quency response.

The EVF/EVH systems have many threaded rigging points that can be used with the supplied eyebolt kits or optional suspension kits to easily create a number of horizontal or vertical cluster configurations. All enclosures in their normal orientations (long axis vertical) share the same height, just over 30 inches (762 mm), promoting attractive clusters. Six coverage patterns, all rotatable, are available in each family, as shown in Table 1a. The EVF-1121S and EVF-1151S low-frequency systems have integral low-pass filters that allow paralleling them with up to two full-range systems, offering a cost-effective way to augment the low-frequency output of EVF full-range systems.

Horn Pattern:	40° x 30°	60° x 40°	60° x 60°	90° x 40°	90° x 60°	90° x 90°	120° x 60°

EVF 12-inch		•	•	•	•	•	•
EVF 15-inch	•	•	•	•	•	•
EVH	•	•	•	•	•	•

Table 1a:

Coverage patterns available in the EVF and EVH series (all rotatable)

The model number scheme denotes the number of woofers, the diameter of the woofers, the number of band passes in the system, the woofer series used and, following a forward slash, the coverage pattern. An example is the EVF-1122S/96, which has a single SMX series 12-inch woofer in a two-way configura- tion and a 90° x 60° pattern. Another example is the EVF-1181S subwoofer, which has a single EVS-18S 18-inch woofer in a “one way” configuration and without a specific coverage pattern (essentially omnidi- rectional in the very-low-frequency range in which it is usually operated).

4	Electro-Voice EVF/EVH User Manual

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.