A Recent Project—Westminster Church of Christ
Sanctuary
This
system is designed for speech reinforcement and sound
playback in association with a multimedia system. The
Churches of Christ use a capella congregational singing.
The rather long reverberation time required for this type
of music makes directivity control of the speech
reinforcement system particularly important. Sound must be
directed into the few absorbing surfaces (the
congregational seating area) in order to achieve good
speech intelligiblity.
The
seating for the congregation is fan-shaped, requiring
greater than 130 degree coverage. The system uses a central
loudspeaker array made up of two Klipsch LaScala systems
driven by a 200-W power amplifier. A small mixer ties in
the pulpit microphone and the line-level multimedia feed
from an iMac G5. The LaScalas were painted to match the
ceiling.
The system Equivalent Acoustic Distance (the apparent
separation between talker and listener) is 2.5 m (a bit
more than 8 ft)