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What speaker is suitable for speaker array
The sound array is a commonly used method for sound amplification in outdoor and large-scale artistic performances. Its fundamental principle involves arranging speakers vertically. Each speaker emits a conical radiation pattern, which compresses the sound pressure to create a lateral elliptical coverage area that precisely aligns with the audience's seating position. This is the operational state of the sound array. When the outdoor sound field spans a broader lateral area—such as in stadiums or public squares—multiple sound arrays can be integrated into a single system.
Each speaker in the array can be adjusted in terms of its suspension direction and angle. By tweaking these settings, the radiation angle of each speaker can be fine-tuned so that the speaker's axis aligns directly with the audience's location. Additionally, the angles of multiple speakers can be coordinated to ensure comprehensive coverage of the entire audience area. The radiation patterns of the sound array include:
A. Concave Mode: Ideal for auditoriums with wide sound fields, it projects sound over a considerable distance.
B. Horizontal Mode: Suitable for sound fields with significant depth, providing extended radiation distances.
Specific adjustments are made using the screws that control the suspension angles of each speaker. These adjustments typically fall within a range of 0° to 7.5° based on design specifications. Outdoor performances pose unique challenges due to the absence of reflective surfaces like walls or ceilings, which means sound energy dissipates quickly without echoes. This makes the outdoor acoustic environment akin to outer space, where sound fades away entirely. Consequently, the loss of sound energy is substantial. For outdoor events with an audience area similar to indoor venues, the total sound power required is often 3 to 10 times greater than what’s needed indoors. To accommodate large-scale artistic performances, sound systems typically require tens of thousands of watts of power.
Undertaking large-scale outdoor performances demands absolute mastery of audio equipment, human resources, and technological expertise. Poor execution can lead to catastrophic failures, as seen in incidents abroad where collapsing sound systems have resulted in fatalities. If such tasks must be undertaken, collaboration with two or three artistic groups or major audio companies is advisable.
The complexity of outdoor sound engineering cannot be overstated. The lack of reflective surfaces means that every detail—from speaker placement to acoustic calibration—must be meticulously planned. Even minor oversights can result in significant issues, making this a high-stakes endeavor. As such, only those with extensive experience and comprehensive knowledge should attempt such tasks.