| Acoustical
problems in an “Upside-down Noah’s Ark”
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Sometimes small structures can create big acoustical headaches.
One case in point is the modestly sized Davis Islands Baptist Church
in Tampa, Florida, where expansion of the sanctuary left the worship
space split into three separate—and uniquely problematic—acoustical
zones.
The interior of Davis Islands Baptist Church.
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Fortunately, the church’s
troublesome ‘split personality’ was overcome by
judicious application of sound system design philosophy.
Built in the 1960’s, the church building is described
by associate pastor Todd Roberts as an “upside down
Noah’s ark.” The original sanctuary space was
confined to the high-ceilinged A-frame part of the structure,
with seating for just over 200. |
But as the congregation outgrew the room, the worship space was
augmented by removing the side walls to access adjoining wings to
either side—each about 20 feet deep with 8 foot ceilings—that
were formerly used as classrooms. The result was three discrete
spaces with radically different acoustical characteristics, though
all shared one common trait: poor sound. The church called on Atlanta-based
Clark ProMedia to propose solutions.
“They had an antiquated center cluster and two remote speakers
for the sides that weren’t even delayed,” says Clark
Pro Media Vice President Matt Card. “They were having issues
with visitors not coming back because what they heard was unintelligible,
particularly when sitting in the side seating areas. Also, the old
system simply didn’t have the power and clarity they needed
for a contemporary praise band and singers.”
The final complication again boiled down to a space issue. “There
was simply no room for all the amplifiers we would need to do the
job right,” says George Clark, founder and chief system designer
at Clark ProMedia. “We might have found space to squeeze in
amps for the main room system, but finding space to house amp racks
for the side wing systems would have been a nightmare.”
One of the CQ-2 Narrow Coverage Main loudspeakers. |
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To resolve these issues, Clark
specified Meyer
Sound loudspeakers, including a pair of CQ-2 Narrow Coverage
Main loudspeakers, a pair of 650-P High-Power subwoofers and
twelve UPM-1P Ultra-Compact Wide Coverage loudspeakers. The
flown CQ-2s direct high-Q coverage to the central space, carrying
clear sound through to the rear pews without exciting the
hardwood ceilings.
Two UPM-1Ps are hung under the CQ-2s for front fill, while
the remaining ten cabinets are directed into the expansion
seating areas on either side.
Using a digital processor with multiple outputs, the system
is configured for stereo operation, with the side UPM-1Ps
receiving alternating left and right feeds.
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“For such a small footprint speaker, the UPM-1P produces amazing
results,” says Matt Card. “It’s a perfect solution
for tight, confined spaces like this. It gives us the power density
we need for contemporary music, but without resorting to large,
bulky boxes.”
UPM-1Ps providing low-profile coverage to expansion areas.
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After enduring several years
of audio frustrations in his “upside-down ark,”
the church’s Todd Roberts is elated with the smooth-sailing
performance of the new system, particularly the loudspeakers.
“We can’t say enough great things about them,”
he says. “We have really noticed a huge difference in
the way everything sounds.” |
Roberts admits that tearing down church walls to create more space
was a far-from-ideal solution. (Hard pressed to accommodate more
worshippers, the church has planned a new building but has been
stymied in efforts to find suitable open land in the community of
islands in Tampa Bay.) After-the-fact architecture usually involves
some compromises, but at least with the new system in place, the
church can offer consistent sound quality that brings everybody
together in the same acoustical environment.
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