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Greg Mace of house-of-worship audio specialists GJM Sound recently completed an install at Nampa First Nazarene Church (Nampa, Idaho) that required serious planning, as the space was highly asymmetrical and finding the “sweet spot” for the Electro-Voice line arrays was difficult.
The center of the stage is off-center in relation to the center of the seating area, and both are off-center relative to the center of the room. This means there isn't a “center” from which to plot a traditional system design. We got the plumb bob lasers out, we made calls to double-check the [Electro-Voice] EASE data and we made a ton of chalk marks on the floor. Finally, we shot the room with lasers, and then got out two pieces of string. After using a balance of high-tech software and simple geometry, we did a sweep of the room from front to back with the string, and where the two crossed was our center. As additional insurance, each main array grid features a custom rotateable yoke, allowing for easy, non-Sheetrock-invasive aiming adjustments.
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