3.0 Designing an EVA Array (cont’)

3.3 Determining EVA Array Configuration with EVADA™ (EVA Design Assistant) Software

EVADA™ is Excel-spreadsheet-based software for determining optimum array configurations for a given venue and trim heights. The latest version of EVADA is downloadable from the Electro-Voice Web site (www.electrovoice.com).

Briefly, one models the room along the horizontal aiming axis of the array, then builds the array of long- and/or short-throw modules that produces the most even coverage front to back. (As described above, EVA modules come in two horizontal coverage angles, 90° and 120°. Following industry convention, these angles are defined where output is 6 dB down from the maximum [usually on axis] output. Chose the hori- zontal angle that provides good coverage of the audience in plan view but minimizes energy directed on reflective wall surfaces, which energizes the room and lowers the intelligibility of the sound system.)

EVADA displays coverage in three frequency bands. The default bandwidth is one-third octave. The de- fault frequencies are 500 Hz, 3,000 Hz and 8,000 Hz. 3,000 Hz is very important for voice intelligibility. 8,000 Hz is important for “sparkle.” 500 Hz (and below) is important for maintaining a good spectral bal- ance throughout the venue. Longer arrays provide low-frequency uniformity closer to the mid- and high- frequency performance of the array. These effects can be easily seen in EVADA. In addition, the frequen- cies and bandwidths can be modified by the designer.

EVADA includes an extensive help file but the following overview will provide a good introduction.

Figure 3 shows the Venue tab of the EVADA spreadsheet, where the room information is entered, includ- ing dimensions, head height, stage specs (optional) and the so-called “acoustic reference point.” This is the point in the venue where EVADA makes its sound-pressure level (SPL) calculations. The acoustic-ref- erence point is typically the mixing position. If uncertain, enter a position in the middle of the main cover- age area.

Figure 3:

EVADATM Venue tab, where room information is entered

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Electro-Voice® EVA Series User Manual

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Garmin EVA-2082S/920, EVA-2082S/906, EVA-2082S/126 user manual Designing an EVA Array cont’
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EVA-2082S/920, EVA-2082S/126, EVA-2082S/906 specifications

Garmin has once again solidified its reputation for innovation and quality with the release of the EVA-2082 series, specifically the EVA-2082S/126, EVA-2082S/920, and EVA-2082S/906 models. These advanced devices blend cutting-edge technology with user-friendly features, catering to both novice and experienced users alike.

At the core of the EVA-2082 series is the integration of Garmin's proprietary GPS technology. Each model offers enhanced accuracy and reliability for navigation, ensuring that users have access to precise location tracking and real-time updates. The built-in multi-band GNSS capabilities allow for improved satellite reception and performance even in challenging environments, such as urban canyons or dense forests.

One of the standout features of the EVA-2082 series is the vibrant display, which delivers crisp visuals and easy readability in various lighting conditions. With customizable interfaces, users can tailor the information displayed to suit their specific needs, showcasing vital statistics such as speed, distance, and elevation.

The EVA-2082 series also emphasizes connectivity with Bluetooth and Wi-Fi capabilities, enabling seamless integration with smartphones and smartwatches. This connectivity allows users to receive notifications, sync data, and even share routes with other devices, enhancing the overall experience.

In terms of durability, the EVA-2082 models are designed to withstand the rigors of outdoor activities. They are water-resistant and built from high-quality materials that can endure harsh weather conditions, making them ideal companions for hiking, cycling, or other adventures.

A notable addition is the comprehensive navigation features that include preloaded topographic maps, which are essential for off-road exploration. Each device supports route planning and provides turn-by-turn directional prompts, making it easier than ever to explore new terrains confidently.

Battery life is another critical aspect where the EVA-2082 series excels. With an extended battery life, users can enjoy long hours of uninterrupted navigation without the worry of their device dying mid-journey.

In conclusion, the Garmin EVA-2082S/126, EVA-2082S/920, and EVA-2082S/906 models showcase the brand's commitment to excellence in GPS technology. With a robust set of features, superior navigation capabilities, and user-friendly interfaces, these devices are poised to become indispensable tools for outdoor enthusiasts and adventurers around the globe. Whether you're hiking through rugged trails or navigating city streets, the EVA-2082 series ensures you stay on track and ready for your next journey.
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