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DSA Application
The DSA Series is appropriate to a wide range of venue types including theaters, theme parks, retail spaces, and government facilities. Its unique capabilities, however, make it particularly well suited to applications that present a challenging acoustical, physical, or aesthetic environment.
Highly reverberant spaces, such as houses of worship, museums, and transportation terminals, will benefit from coverage closely tailored to each specific situation. The DSA Series provides wide horizontal coverage in applications where few mounting locations exist and the narrow profile enclosures offer a minimum impact solution where aesthetic considerations are paramount.
For voice-only applications, single DSA250 loudspeakers placed to provide adequate output and horizontal coverage should solve the problem. In these cases, designers enjoy complete control of the vertical pattern throughout the vocal range. For broadband music reproduction, the addition of a DSA230 to each DSA250 will extend pattern control well into the LF range and provide additional LF output.
Designers can use DSA Series modules in a variety of combinations to meet specific output or directivity needs, and work is ongoing to create a set of factory-supported configurations. In general, EAW engineers have found some of the following guidelines to be helpful.
With 120° horizontal coverage, only back-to-back arrays of DSA modules would be feasible in the horizontal plane.
DSA250 loudspeakers are designed to “lead with the highs,” so the HF section should be closest to the listeners whenever possible, typically putting the HF on the bottom. However, if the loudspeaker were covering a balcony at or above its level, then the HF should on the top.
In cases where two DSA250’s would be used to create a vertical array recognized by DSA Pilot as a single unit, they should always be placed HF-to-HF. With the two LF lines now over 8 feet apart, that separation allows DSA Pilot to control the vertical pattern throughout the operating band. Users can add as many DSA230’s as they wish to a single DSA250. DSA Pilot will recognize and control as many modules as needed to reach the desired output or directivity goal. When desired, directly adjacent DSA modules can be treated separately so the lower one can, for example, cover a main listening area while the upper covers a balcony.
INSTALLATION
Since DSA Pilot controls the vertical pattern, standard installation is remarkably fast and easy. Each DSA250 and DSA230 includes a standard mounting kit with two 2-part brackets and a mounting template. One part of each bracket mounts to the wall and the other part to the DSA module. Installers simply lift the 51 in/100 lb modules and set them in place – they never support the weight while attaching the bracket.
The loudspeaker is now securely mounted but can swivel up to ±55°, allowing easy access to connectors. After being aimed in the horizontal plane, tightening the connecting bolts then secures the module in position.
In situations where installers must suspend DSA Series loudspeakers, an optional suspension bracket is available. This permits the physical angling of DSA enclosures to provide maximum output at a down angle. DSA Pilot does support applications in which loudspeakers are not flush mounted.
CONCLUSION
In the professional audio industry, the phrase “breakthrough technology” has been used to describe innovations that fall considerably short. In this case, EAW engineers feel justified in the use. The DSA Series represent an important step forward in the quest for smaller, smarter systems that offer designers truly customizable tools to solve difficult application problems.
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Each DSA250 and DSA230 includes a standard mounting kit with two 2-part brackets and a mounting template.
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