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The Buzz: Installation Spotlight: Glen Mar United Methodist Church, Ellicott City, Md.

Jan 1, 2009 12:00 PM, Staff Report

AV Expansion


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To create a broad and even sound field, Design & Integration chose an 18in. JBL VRX918S-WH subwoofer with five JBL VRX932LA-WH line-array loudspeakers positioned in a curve.

To create a broad and even sound field, Design & Integration chose an 18in. JBL VRX918S-WH subwoofer with five JBL VRX932LA-WH line-array loudspeakers positioned in a curve.

Due to the many materials used within the space, DI ran into some acoustical problems.

“When you clapped your hands, the echo would last forever,” says Scott Wieser, DI's head of engineering.

In response, Alexander Design Studios partnered with Neil Shade of Acoustical Design Collaborative in Ruxton, Md., to determine how to ready the room for sound. An acoustical covering was added to the walls, with the exception of areas made of brick, up to 6ft. in height. Above the 6ft. level, Tectum Fabri-Tough sound panels were added.

To create a broad and even sound field within the multipurpose room, DI chose an 18in. JBL VRX918S-WH flying subwoofer with five JBL VRX932LA-WH line-array loudspeakers positioned in a curve.

In addition to acoustical challenges, DI also had to figure out how to fit four Lab.gruppen C 68:4 amplifiers within the 200-square-foot control room without positioning them too close to the sound technicians since the amps' heat and noise could create a distraction.

According to Wieser, DI's solution was to mount the amps inside the control room's drop-tile ceiling, out of sight and sound.

Hiding the amps created more space within the control room for the sound technicians and the AV equipment — which included a Yamaha M7CL-48 digital mixing board, a Biamp Systems AudiaFlex-NC audio DSP, a Crestron Pro2 control system processor, and a Crestron TPS-12B 12in. touchpanel.

When determining the position for Glen Mar's projection screens, located at the left and right sides of the stage, DI had to ensure that they did not interfere with a ventilation system located in those areas. DI chose to use two 116”×87” Draper 101184Q wall-mount screens, positioned above the vents, and a Sanyo PLC-XF60A LCD projector.

ADDITIONAL AV

While Glen Mar's multipurpose room housed the majority of the AV systems and equipment, the facility's other rooms also received upgrade treatment. For instance, five JBL Control 25T loudspeakers were arranged throughout the narthex; two 46in. Sharp Aquos LC46D64U LCD TVs were placed in both the narthex and the community room; and the nursery was also wired for television.

Glen Mar's media hub was placed in the basement and was designed as a central location connecting AV systems throughout the entire building.



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