User manual ELECTRO-VOICE BACKGROUND MUSIC SPEAKER SE
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Manual abstract: user guide ELECTRO-VOICE BACKGROUND MUSIC SPEAKER SE
Detailed instructions for use are in the User's Guide.
[. . . ] Should the system be divided into multiple zones with separate volume controls?If so, should pages be routed to all zones, or should zones be separately addressable? [. . . ] Many contracting companies simply communicate the sales engineer's design directly to their installation department, who are charged with putting the system in and making it work. For example, the salesman's natural tendency is to overdesign and oversell when he can. If the client is amenable, the result can be an excessively complicated (and problematic) system. Moreover, it is easy to make mistakes in the flush of a sale, and these may be compounded when the system goes in.
Electro-Voice Installed Sound Technical Guide
©2002 Telex Communications, Inc.
Speaker Systems for Background Music and Paging
To address such pitfalls, it makes good sense to have each proposal reviewed by a second engineering employee whose approval should be required before the specification goes to installation. At this stage, design details can be finetuned and potential problems can be addressed to assure that the design is feasible, efficient and free of unnecessary redundancy.
Selecting and Positioning Loudspeakers
In the traditional approach to overhead-distributed systems, loudspeakers are located in a grid arrangement whose dimensions are dictated by the room height and the directivity of the speaker elements. Two basic placement patterns prevail: square spacing, and hexagonal (or crisscross) spacing. In addition to the spacing pattern, the designer must choose between three density types, designated respectively as edge-to-edge, minimum overlap and center-to-center. The greater the overlap, the more uniform the coverage-- and the higher the cost. Budgetary constraints tend to favor sacrificing density, so the optimum center-to-center configuration is, in practice, the least common of the three.
Ceiling Speaker Size
System designers usually specify 8-inch cone loudspeakers for distributed overhead systems, at least in part because they represent the traditional choice. In many cases, however, you can achieve equal or better results--at a significant savings--by using 4-inch elements. Characterized by somewhat smoother frequency response and less susceptibility to feedback than 8-inch elements, 4-inch units are also generally less expensive and offer a real advantage in directivity. Of course, a 4-inch unit will typically be somewhat less sensitive than a comparable 8-inch. [. . . ] If the building manager tells your installers to put the amp racks in the basement you don't want the owners calling you and insisting that they should have been in the second floor office
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Standardizing for Profitability
One of the best strategies that we can recommend for success in contracting is to standardize your operations wherever possible. Settle on a few basic system designs that can be modified to cover a wide variety of circumstances and then educate your sales staff about them. [. . . ]
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