Chapter 4

Description

4 . 1 S y s t e m O ve r v i e w

DSA Series loudspeakers are variable directivity, self-powered line arrays. Each loudspeaker’s vertical beamwidth is determined by the settings of an internal DSP (digital signal processor) and power amplifier for each transducer. This provides complete, on-site control over the range of possible vertical beamwidth patterns.

EAW’s Windows-based DSAPilot is used to set the coverage required for each loudspeaker or loudspeaker cluster. The user-friendly DSAPilot optimizes the required signal processing for the design. This data is then uploaded to the DSA Series loudspeakers in the system. The DSAPilot normally communicates with the loudspeakers using EIA-485*. An optional CobraNet™ network interface is available.

*Formerly known as RS-485 (Recommended Standard 485)

4 . 1 . 1

D S A S E R I E S M O D E L S

Figure 4.1.1 DSA250 & DSA230

DSA250: Full range, 2-way, loudspeaker system

 

DSA230: Low frequency and voice-only loudspeaker system

 

4 . 1 . 2

A C O U S T I C A L B E N E F I T S

 

Each loudspeaker can be electronically adjusted on-site to direct sound primarily where needed. Unwanted sound reflections from room surfaces can be reduced, improving the direct to reverberant sound ratio. This, in turn, can significantly increase speech intelligibility. Asymmetrical pattern control can provide consistent SPL in situations with HIGH near-to-far listener distance ratios. User adjustable level control, equalization, and compression, are provided on each of the two audio inputs. For situations with multiple locations, overall signal delay for each loudspeaker cluster is also provided.

4 . 1 . 3

P H Y S I C A L B E N E F I T S

The DSA Series loudspeakers are physically narrow and quite shallow, providing a low profile to reduce their impact on architecture. Their normal mounting position is specifically designed to be flat against a vertical surface. This considerably reduces installation complexity. The DSA Series design permits several loudspeakers to be easily arrayed in one location as a cluster. This affords additional capabilities including higher output and extremely narrow vertical coverage, as well as extended pattern control, and output at lower frequencies.

DSA Series enclosures are constructed of a powder-coated, extruded aluminum body (also used as the amplifier heat sink), high-impact polystyrene end caps, a thick PVC baffle, and a finely perforated steel grille. This construction is designed for years of trouble-free use. The appearance is designed to blend attractively with a variety of architecture. The enclosure finish is a neutral white. The grille is powder-coated steel, with a perforation style that appears similar to a cloth grille at typical in-use distances. Installation hardware is included to facilitate installation in most applications.

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EAW DSA250 & DSA230 owner manual Y s t e m O ve r v i e w, A S E R I E S M O D E L S, O U S T I C a L B E N E F I T S

DSA250 & DSA230 specifications

The EAW DSA250 and DSA230 are state-of-the-art powered loudspeakers designed for professional audio applications, offering high performance in a variety of environments. Both models deliver exceptional sound quality, ensuring clear audio reproduction for live events, installations, and portable use.

The EAW DSA250 features a robust bi-amplified design with a powerful 2500 watts of peak power output. This loudspeaker is equipped with a custom-designed 15-inch woofer, delivering deep and impactful low frequencies. Additionally, it boasts a 1.4-inch titanium compression driver that provides smooth mids and crisp highs, ensuring a well-balanced sound profile across the frequency spectrum.

On the other hand, the EAW DSA230 is engineered for similar high-performance needs but comes with a slightly more compact design. The DSA230 incorporates a 12-inch woofer, which still produces rich low-end sound, making it ideal for smaller venues or for use as a stage monitor. It features a 1-inch compression driver, which provides excellent vocal clarity and intelligibility.

Both models are equipped with advanced digital signal processing (DSP), allowing for optimized performance through precise loudspeaker modeling. The DSP offers various preset configurations tailored to different acoustic environments, allowing users to select the ideal settings for their specific applications. Additionally, the built-in EQ settings facilitate precise sound tuning, enabling users to adapt to various challenges presented by live sound environments.

One standout feature of the DSA series is the integration of the EAW FOCUS technology, which ensures consistent coverage and dynamic response across wide areas. This innovative technology also helps to minimize feedback and interference, making it a reliable choice for both performers and audio engineers.

The construction of both models is rugged, designed to withstand the rigors of touring while maintaining a professional appearance. They come with a sleek and practical enclosure design, featuring convenient mounting options for versatile deployment.

In summary, the EAW DSA250 and DSA230 loudspeakers are exemplary examples of advanced audio engineering, combining powerful amplification, precise DSP management, and robust build quality. With their exceptional sound reproduction, these models are ideal for professionals seeking reliable and high-performance audio solutions in diverse applications.