Friday, July 18, 2014

Good Church Sound System Design Keeps The Message In Focus

By Marylou Forbes


From elegant cathedral-like structures to humble store-front rooms in strip malls, most congregations have a weekly gathering place. While a house of worship is more than just a building, its acoustics determine whether worshipers can comfortably hear both music and message. Good church sound system design makes the difference between an involved and enthusiastic congregation, or one that is struggling just to hear.

Most people have experienced discomfort in rooms having problems with amplification, and understand how elaborate amplification setups may eliminate some problems, but can make others worse. The volume may be fine in one area, but ear-shattering across the room. Voices might be loud, but impossible to clearly understand. Podium speakers may seem far away or disembodied, or else obscured by embarrassing, ear-shattering feedback.

In some congregations, the addition of acoustic panels or thick carpet may eliminate echo entirely, while others fight heavy reverberation. People sitting in the front pews may hear the speaker adequately, but those a few rows back may miss most sentences. Inadequate microphones often provide good spoken vocal clarity, but cannot begin to handle the demands of amplified bass, drums or keyboards.

Members may try to correct those problems themselves, but fine tuning a room or equipment to a achieve the necessary balance for good live reproduction may require professional acoustic analysis. Although most congregations have limited budgets, equipment costs are only one factor in choosing and developing a new audio setup. In some cases, simply spending a great deal on speakers or microphones is not cost-effective.

Good analysis relies on digital electronics for critical measurements, and the human ear for final judgments. Every room has its own unique acoustical footprint, and that can be determined best using specialized audio reference software. Spots that encourage echo or that swallow certain frequencies can be eliminated, creating a dynamic range that is not only aesthetically pleasing, but which is also universally audible.

A single speaker may be enough for a small space, but using multiple sets can cause timing problems and other issues. Proper echo-control and balance eliminates most of those irritations, giving each listener the gift of clean, easy-to-process sound waves. Without the proper equipment, however, achieving accurate calibration can be frustrating or difficult, and a design company eliminates the guesswork.

Because church services usually emphasize both music and the spoken word, a new design must be able to handle both. Speech requires microphones that are able to accurately clarify what is being said, and they should also be able to seamlessly switch from words to music without volume issues or noticeable distortion. While cost is always an important consideration, choosing speakers based on price alone can be disappointing.

After finalizing the equipment choices and room design, professional installation avoids code-breaking electrical errors, while eliminating inductive noise sources. Other important requirements include concealment of intrusive connections and wiring, and making sure that heavy, hanging speakers are safely anchored. After installation, most firms also train selected church members in audio control panel operations.




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