First Sports Install of Meyer Sound CAL Debuts at Berkeley's Memorial Stadium

10-foot-high columns, discreetly mounted around the stadium's outer rim, provide an elegant solution that preserves the architectural integrity of the historic structure-inspired by Rome's Coliseum.

With the installation of 40 CAL™ column array loudspeakers, Memorial Stadium

at the University of California, Berkeley has become the world's first
sports facility to use Meyer Sound's advanced beam steering technology. The
slender 10-foot-high columns, discreetly mounted around the stadium's outer
rim, provide an elegant solution that preserves the architectural integrity
of the historic structure-inspired by Rome's Coliseum-while also providing
extraordinarily high speech intelligibility despite the crowd noise in the
63,000-capacity seating bowl.

As part of the $321 million, two-year upgrade project, Dallas-based
acoustical consultants Wrightson, Johnson, Haddon & Williams, Inc. (WJHW)
was given the challenge to improve the audio clarity for the audience in the
bowl and minimize noise concerns for the nearest residences that are only
about 200 feet away. WJHW also had to make sure the new sound system would
maintain the architectural integrity of the clean, classical lines.

For both architectural and environmental noise reasons, a point-source,
scoreboard-mounted system was prohibitively problematic. "We concluded
fairly early in the process that a distributed system was the best
solution," recalls WJHW Principal Jack Wrightson. "Later we found out that
Meyer Sound was developing the CAL loudspeaker, and it ended up being the
right solution. It kept the historic look of the fa├žade and by all accounts
the university is very happy with the performance."

Thirty-eight of the CAL 96 loudspeakers are spaced around most of the bowl
rim (except for the press box section), with the slender enclosures blending
harmoniously with surrounding flagpoles. The coherent, wide-bandwidth sound
is precisely steered to cover the stands with minimal spill onto the
field-and into referee microphones.

"From an architectural viewpoint, we loved it," says Joe Diesko, vice
president at lead architects HNTB and project manager for the architectural
team. "The traditional distributed approach would be big square boxes
sitting up there, and a big cluster at one end was out of the question. The
CAL solution was just brilliant. They look great, and they sound fabulous."

Jack Wrightson is also pleased by the system's aesthetic qualities, as well
as its performance during commissioning. "We measured an STI-PA average at
0.70 throughout the seating bowl, which is exceptional for a football
stadium," he says.

Two additional CAL 96 loudspeakers are mounted facing the student section to
pump up the crowd. Stands below the new press box required a different
solution, in this case relying on Meyer Sound MSL-4, UPM-1P, and UPJ-1P
VariO™ loudspeakers. Coverage for the University Club, under-scoreboard and
club level sections is supplied by MM-4 and MM-4XP self-powered
loudspeakers, and additional UPM-1P loudspeakers. Galileo® loudspeaker
management systems with three Galileo 616 processors provide signal drive
and alignment.

Including more than 200 Meyer Sound loudspeakers, the entire audio system
was designed by John Kosco of WJHW under Jack Wrightson's direction.
Installation was by Parsons Technologies of Minneapolis, Minn. with Jasyn
Rousselow serving as lead sound integrator and Rich Norby as crew chief.

Designed by John Galen Howard, Memorial Stadium was completed in 1923 and
dedicated to students, alumni, and other Californians who had sacrificed
their lives in World War I.

Family owned and operated since 1979, Meyer Sound Laboratories, Inc. designs
and manufactures high-quality, self-powered sound reinforcement
loudspeakers, digital audio systems, active acoustic systems, cinema sound
systems, and sound measurement tools for the professional audio industry.
Founded by John and Helen Meyer, the company has grown to become a leading
worldwide supplier of systems for theatres, arenas, stadiums, theme parks,
convention centers, houses of worship, and touring concert sound rental
operations. Meyer Sound's main office and manufacturing facility are located
in Berkeley, California, with field offices and authorized distributors
located throughout the USA and around the world.

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