There are several critical factors in getting good, clear sound with an outdoor PA system. An important thing is choosing the right speaker type. For example, point-source speakers work well in outdoor situations due to their directivity (offering a more uniform sound field) and isolating the loudspeaker signal from background noise. For outdoor applications requiring high output and sound projection, point-source speakers are capable of delivering sound pressure levels (SPL) up to 130 dB at a distance of 1 meter.
Worse is the placement of speakers. Speakers should be at the right height and angle for up to-the-minute sound dispersion. In general, sound dispersion problems are minimized and the ground does not absorb audio when speakers are mounted 10 to 15 feet off of the two ways. A good speaker array, like the line-array system can extend its coverage as wide as 120 degrees horizontally and up to 20 degree vertically in angle that will let sounds out into even larger audience areas.
Weather also factors in greatly on sound quality. Outdoor PA systemsCombat the rain, wind and temperature changes by using weather resistant elements. Speakers with an IP65 rating, for instance have been built to withstand dust particles and also normal water jets which are perfect when situated in various climate conditions.
It is very important to calibrate and tune the PA system to get clarity in sound output. With the help of accelerated digital signal processing (DSP) you could set EQ´s or time delays to fit and suit best the acoustics of an outdoor environment. These should be settings tailored around whether I'm standing way too close to my speakers or sitting in a larger room with lots of ambient noise. A common scenario is to remove low-frequency noise with a high-pass filter, that will clear up the sound and also reduce feedback.
Utilization of amplifier in a good manner also helps to clear the sound. For example, outdoor PA systems are more demanding and may require amplifiers with higher wattages to be able to drive multiple speakers effectively at long distances. For the audio part, amplifiers larger than 500 watts per channel will guarantee sound can be heard loud and clear on every area of your venue.
This is like the outdoor system that works at Coachella Valley Music and Arts Festival which uses high-output point-source speakers to project crisp sound across its wide open plain fields. This quick rundown shows how making the right speaker and location choices as well calibration can lead to audiophile sound in outdoor gigs.
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