The WorshipCentre Christian Church in the Brisbane suburb of Carina has recently
upgraded its technical infrastructure with a new public address system.
Production Audio Video Technology Pty Ltd (PAVT), who already had a relationship
with the client, were the successful bidders, and they recommended the versatile
and efficient Powersoft X Series amplifiers to power an EAW system.
According to project manager, David Watson, and sound designer, Ben Clarke, the
requirement had been for a typical modern Pentecostal style church system. “This
included good intelligibility for spoken word, as well as great energy transfer for
modern music styles including full band and concert style presentations.’ And, of
course, the system had to provide even coverage to the seated area for a
maximum of some 1000 or so congregants.
The room was modelled using the EAW proprietary modelling and optimisation
software, Resolution. “The building design had some challenges that required some
acoustic treatment of surfaces, with the need to keep as much of the PA energy
away from the surfaces as possible,’ Clarke reports. “We needed to make sure we
delivered clear, coherent hi-fi style sound to the seated areas. ”
Having distributed Powersoft amplifiers over a 14-year period, PAVT knew that this
brand would provide the best partnership with the EAW KF740 line array. “The X
Series has incredible and precise control over the EAW speaker elements that made
up the system, allowing the delivery of highly accurate and coherent results,’ the
designer continued.
The Powersoft amps were configured with one X8 running six cabinets of 4-way
EAW KF740 line array on the left wing — repeated with another X8 running the right
hang of six cabinets.
A Powersoft X4 drives the EAW QX564 bi amped speaker cabinet, acting as sidefills.
Two channels are assigned to the high and low, while the remaining two channels
run front fill JF8 speakers. This is repeated, with another X4 powering the other PA
flank.
In addition, a pair of Powersoft K20 amplifiers has more than enough headroom to
drive four EAW SB2001 dual 21′ subwoofers, with each output channel running one
enclosure. These subs require 4000w at 2 ohms running power with transients of all
9000w.
Carrying out the installation were third party HOW specialists, CPC Production
Services. One major advantage of the Powersoft amplifiers — as noted immediately
by the customer during the demonstration and testing phase — was that the
Powersoft X series occupied less rack space than other amplifier solutions … by a
long way. They could also see that it offered more power per channel and that the
amplifiers generated far less heat than other brands, noticing in particular how the
temperature cooled when X Series was installed.
