Meyer Sound Laboratories, Inc.

 New installations of Meyer Sound CAL column array loudspeakers are delivering clearly intelligible speech along with impeccable music reproduction in two acoustically problematic worship spaces, with one room also benefiting from a subtle acoustical re-balancing courtesy of a Constellation acoustic system.

Mounted snugly in niches flanking the altar, the custom color-matched CAL 96 loudspeakers virtually disappear within 19th century Italian Renaissance Revival architecture of Mother of God Catholic Church in Covington, Kentucky providing a boost to the sound quality for the contemporary music.

At Saint John Paul II National Shrine in Washington D.C., what formerly was an unremarkable meeting and exhibit space has been exquisitely transformed – visually and aurally – into the Redemptor Hominis Chapel. Direct reinforcement of speech and occasional music is supplied by a pair of CAL 64 column array loudspeakers. To create an acoustic that is ideal for traditional Catholic worship, the Jaffe Holden team also specified a Meyer Sound Constellation acoustic system.

Mother of God Catholic Church

"We are so thrilled with what we are hearing now," says Cindy Duesing, director of the church's 14-member contemporary music ensemble. "For the first time we can really hear each other. Now we can distinguish individual voices and instruments – instead of hearing mush."

Design for the church's audio renewal was entrusted to consultant David Walters of Stan Roller and Associates. His plan called for acoustical treatment of the rear wall to eliminate slap echoes and replacement of ungainly custom loudspeaker boxes – dubbed "the refrigerators" because of their bulk and profile – with a beam-steering column solution.

"I presented three options for loudspeaker columns, with Meyer Sound as the premium option," explains Walters. "Here, I must give credit to Cindy Duesing, who headed the committee, because she pushed hard for the best solution. Musically, the CALs sound just stupendous. In fact, this is probably the best column array room I've ever done."

Programmed in a split beam configuration, the top segment of 64 drivers employs a 10° vertical beam to cover the middle and rear sections, throwing nearly 100' to the back pew, while the bottom 32 drivers project a 20° beam to uniformly cover the front sections. Intelligibility proves excellent, considering the extremely reverberant acoustics, with Walters reporting STI readings of .65 or better throughout the seating area for about 600. System integrator was George Smith of Cincinnati-based Smithall Electronics.

Redemptor Hominis Chapel

"Of all the beam-steering columns out there, Meyer Sound CALs are exceptional in both their sound quality and controllability," says Andrew Nagel of the Norwalk, Connecticut consulting firm Jaffe Holden.

In this application, the beam angle and vertical spread of the CAL loudspeakers are calibrated to carry highly intelligible speech to the rear pews – a distance of about 90 feet – without overexciting what are effectively the "live" acoustics of a large church.

Meyer Sound's Constellation acoustic system also was ideal for the project. "The room dimensions and ceiling height were dictated by the existing structure and couldn't be expanded," explains company Principal Mark Reber. "But by applying specific absorptive treatments together with the active acoustics of Constellation, we were able to re-balance and enhance the acoustical signature of the room. The result can range from subtle to dramatic, and it is remarkably effective."

At the core of the system is a D-Mitri digital audio platform, the host DSP engine for the patented VRAS acoustical algorithms. Ambient room sensing is via 14 miniature condenser microphones, and the desired acoustical characteristics are reproduced by 18 MM-4XP self-powered loudspeakers, 13 Stella-8C installation loudspeakers, and 10 MM-XP subwoofers.