First Christian Church
This congregation has outgrown their over 40
year old facility and have no room to expand. The new 20 acre campus on the south
edge of town begins with a very well dressed multipurpose room. Designed
by Weger + Associates Architects and built by PJ Hoerr, the new facility makes
excellent use of a 28,000 square foot structure.
The system was designed in the late summer of 2005
and completed in early summer of 2007. The limited budget did not allow for
systems to be completed by a sub contractor, so the tech team and ministry
staff choose to build the systems themselves with some guidance from Jordan
Audio Consultants. (This approach does not work for everyone.)
The acoustic treatments were built in as much as
possible, until the budget was spent in full. The splaying of the
side walls, fiberglass batting above the "T" grid ceiling, and the application of
1" thick fabric covered panels on the back wall
of the room have provided a manageable space that supports congregational
singing. As funds become available additional panels will be added on the
side walls to complete the treatment plan and reduce a few flutter echoes.
The main cluster is assembled from
separate components (we don't get to use this approach very often) and hidden behind acoustically transparent fabric above
the "T" grid ceiling. The array includes two 12", 500
watt woofers stacked in a Low Diffraction Acoustically Coupled enclosure and a
pair of 90 x 40 degree biradial
horns with a 2" throat, 100 watt compression drivers.
The sub woofers are custom built
systems from Concert Systems LLC of Southbend Indiana. They were designed
to provide a very deep sound while retaining a high impact level.
Gary Lavengood designed the boxes to fit into the wall cavity on either
side of the
platform. Each box is home to an 800 watt 15" woofer.
The church had purchased three new JBL PRO
floor monitors about 2 years ago. The music team is very pleased
with these units, so we simply added three more to better accommodate the larger
stage and the now larger music team
The new monitoring arrangement provides for
four separate monitor mixes. The existing console was capable of this
capacity, but had not be utilized until the move.
The existing mixing
console was retained for the present time. A few other components were reused from the congregation's
system at the previous facility. Most of these are in the control booth including wireless
microphones, an effects processor and recorder. All the wired microphones
have been reused too. One amplifier was
reassigned to be used with the woofers in the array. Even though the
amplifier is over 12 years old, it keeps on "ticking" just like most
The 24 space locking metal amplifier rack is
located in the back stage space. A deluxe digital
system processor controls the main overhead array, and the sub woofer systems. The
four stage monitor systems use two simple digital system processors.
The churches volunteer crew really stepped up
to the plate and did a great job building the systems and saving the
congregation about $10,000 on the total budget.
After several weeks getting used to the new
space, the ministry team is excited about what the future holds. The
sound system is performing better than expected. The video projection
system has greatly enhanced all church events. The acoustics are still a
bit too alive and energetic, but will be tamed in the future as funds become
August 2011 - Just learned from Geoff that the
church now has a pair of Presonus digital mixing consoles linked together to
replace the ageing Mackie mixer.
This is Geoff one of the churches media team members working in the AVL
Here is the platform a few weeks after the congregation had moved into
Inside the amplifier rack
This is Phil, the youth minister. He is a very hard and diligent
The video projector is about 12' in front of the hidden speaker array.
The rear wall showing splayed walls and fabric covered acoustic treatment
The stage provides a lot of flexibility for worship and special events.
A custom sub woofer prior to decorative grill being installed.
An other view of the AVL booth.