Centennial Olympic Rings Fountain
during the 1996 Summer Olympic Games.
|The Olympic Ring Fountain|
Located in Atlanta's Centennial Olympic Park,
the Olympic Ring Fountain is certainly a noteworthy
project that has been viewed by millions.
Commercial Audio Systems designed and installed
the Fountain's audio system which also provides
the water display's choreographic control codes.
This system has multi-point, off-site remote
programming ability for special events,
seasonal changes, and safety requirements.
Click on photos to see full screen view.
|Fountain Design Specifications
The design specifications called for Fountain operation in four major modes: Start-up,
Static, Show, and Shut-down. The specifications for performance and technical sequence
of operation were collectively created by EDAW, Inc., The William Hobbs Fountain Co.,
The Georgia Fountain Company, The Magnum Co's., and Commercial Audio Systems.
Commercial Audio contracted to design and install the sound system and linked control
source that would meet or exceed the specifications and operating sequence parameters.
Audio & Choregraphic System Design
After extensive study, the system that we would design had to be programable on-site,
as well as from a remote location. It would be capable of generating SMPTE code for
accurate choreographic show control and have the ability to automatically log time code
use. Using tape playback for such an application would not be an option, as the
programming had to be infinately flexible and vary on a minute-by-minute basis
throughout operating hours, seven days a week. In addition, this system would be time-
clock driven for initiating day-of-week specific start-up and shut-down sequences.
Mandatory emergency features for the safety of Park visitors, as well as that of the
massive pumping equipment beneath the fountain, would underscore the final design.
To provide a superior level of reliability we turned to the broadcast|
industry and chose a computer based audio programming platform
by Broadcast Electronics. Their Flagship product, the
AudioVault-100, provided the flexibility to satisfy design requirements.
Among the many features provided by the AudioVault-100, is its ability
to program SMPTE time code in parallel with each audio cut, while keeping track of code
usage, and avoiding possible overlaps or repeats. The system also has multiple
time-programmable contact closures, hardware function controls, as well as seamless
remote telephone control access, with built-in diognostics. Their Trim & Tones screen
allows you to view the waveform of each audio cut, which proved to be invaluable
to the choreography programming process.
The audio mixer is the TOA model M-900,
plaza level remote microphone volume control, as wellas
remote master volume control. These mixers are used for all
pre-production work, the feature show presentation audio
routing, as well as live microphone mixing from the Fountain's Plaza. Toa's simple
to configure input module bays and wide wariety of signal processing modules offered the
exact design solution this project required.
The Fountain Plaza equalization is achieved by the use of two, 30
band graphic equalizers, RANE model GE-30. These equalizers are
known for their ear-pleasing tonal quality. In addition, we chose them
for their abundant headroom and proven stability over time. The active
filters of the GE-30 are of the constant bandwidth (constant-Q) variety.
The bandwidth of each individual filter is narrow enough to prevent
unwarranted interaction between filters, yet wide enough to produce exactly the type of
correction curve demanded by acoustic surroundings such as these.
The Plaza speakers consist of (24) BOSE
model twenty-five, with custom fabricated weather shields.
They are accompanied by a BOSE 502 bass enclosure that
provides powerful low frequency support. The model twenty-five enclosures
the perimeter of the Fountain Plaza and are mounted on flagpoles at a height of
feet, to achieve the specified coverage. Each speaker is wired to produce the full
watts, while driven in the 70-volt line configuration. The 502 bass
enclosure is located
at the center of the Fountain Plaza for equal dispersion in all
The system amplifiers are manufactured by
are part of their CT Series. We chose the model CT-410
specifically for its reliability, safety features, low mounting
profile, minimal idle current, and a superior quality of
sound reproduction. There are two 410's driving the BOSE
model 25 speakers and a third that is run in bridged mono to drive the BOSE 502 bass enclosure.
Although many changes have been made to the Olympic Ring Fountain, since it's initial
opening at the 1996 Summer Olympic Games, we are proud to report there have been
no changes or repairs made to, or needed by, the system we installed. The system, as
designed, continues to operate flawlessly, twenty-four hours a day, seven days a week.
The only maintenance, however, is required by the standard operating proceedure which
calls for routine tests to be performed via modem, by running system diagnostics that
ensure the system's reliability and longivity.
If you have a special project in mind, that needs
attention to design detail and a real
flair for innovation, contact us to engineer a solution.
Communication is our business,
where we welcome the opportunity to be creative. (404) 325-4892
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