Table of Contents | Electro-Voice EVF-1152D, EVF-2121S, EVH-1152S

Rigging-Safety Warning					3
1.0	Introduction				4
	1.1	Finishes and Colors Available			9
	1.2	EVF Front-Loaded Series			9
	1.3	EVH Horn-Loaded Series			9
	1.4	Accessories for EVF and EVH Systems			10
2.0	Tool List	.......................................................................................................................................................................................................			10
3.0 Designing an EVF/EVH Cluster					11
	3.1	General Aiming and Placement Guidelines			11
	3.2	Choosing between the EVF Full-Range and EVH Full-Range Systems			11
		3.21	Directivity Break Frequency Defined		11
	3.3	More on Coverage Patterns, Multiple Coverage Patterns, the Need for Clusters of
		Loudspeakers and How Far a Single Cluster Can “Reach” into a Venue			12
		3.31	Basic Clustering Guidelines		12
	3.4	Coverage-Uniformity Target			13
	3.5	Multiple-Source Interference in Clusters			14
		3.51	Reducing Multiple-Source Interference		16
4.0	Preparing EVF and EVH Systems for Installation				19
	4.1	Recommended Preflight Procedures			19
	4.2	Passive/Biamp Crossover Configuration			19
	4.3	Rotation of High-Frequency Waveguides (EVF Systems)			20
	4.4	Rotation of High-Frequency Waveguides and Mid-Frequency Waveguide
		Contours (EVH Systems)			20
	4.5	Digital Signal Processing			21
		4.51	Full-Range Systems in Passive Mode		21
		4.52	Using the EVF-1121S and EVF-1151S Low-Frequency Systems in Full-Range
			Clusters that Operate on a Single Power-Amplifier Channel		22
		4.53	DSP (Digital Signal Processor) Loudspeaker Presets for Biamp Operation		22
5.0 EVF and EVH Rigging System					23
	5.1	Introduction			23
		5.11	The Flying EV-Innovation (EV-I) Loudspeaker System		23
		5.12	Important Details that Apply to the VRK and HRK Rigging Kits		26
	5.2	EV-I Rigging Primer			26
		5.21	Anatomy of an EVF or EVH Flying System Using M10 Eyebolts		27
			5.211	Eyebolt Application Warnings	27
			5.212	Eyebolt Installation	28
			5.213	All-Eyebolt Clusters	29
		5.22	VRK Kits and Vertically Rigged Clusters		31
		5.23	HRK Kits and Horizontally Rigged Clusters		32
		5.24	Assembly Instructions for VRK and HRK Kits		35
6.0	Rigging-Strength Ratings and Safety Factors				37
	6.1	Working Load Limit and Safety-Factor Definitions			37
	6.2	Structural-Rating Overview			38
	6.3	All-Eyebolt Structural Ratings			39
		6.31	Working Load Limits for Eyebolts		40
		6.32	Suspension-Line Angles		41
		6.33	Left-to-Right All-Eyebolt Cluster Angles		41
	6.4	VRK Rigging Structural Ratings for Vertical Clusters			42
		6.41	Working Load Limits for Eyebolts used with VRK Vertical Rigging Kits		44
		6.42	Left-to-Right Vertical Cluster Angles		45
2				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.