Page 2 - ACCENT Feb 10
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2 ACCENT Special Edition - February 2010

Immanuel College Chapel sound system

...continued from page 1

A key factor in choosing the K-Array line array sys-
tem was the tightly controlled dispersion character-
istics. The 100° horizontal dispersion made it very
easy to position one line array either side of the dais
and cover the entire ground floor audience in the
octagonal space. And with a very tight 7° vertical
dispersion we were able determine their height
and orientation to provide clear and even sound
distribution from the front row to the very rear of
the chapel under the balcony, some 16m from each
speaker.

To cover the relatively small audience located on

the balcony we installed two compact Tannoy Di5A

bi-amped speakers, also DSP controlled and with a

short delay. By setting the delay a few milliseconds

             more than it takes

             for sound to reach

             the balcony from the

             main speakers the

             audience perceives all

             sound to be coming

             from the front rather

             than locally. For

             those interested, this

             is a psycho-acoustic                               Roland M400 Digital Mixing Desk

             characteristic of hu-                            Roland S1608 Digital Snake on stage

Tannoy Di5A  man hearing (known                          greatly enhanced performance capabilities... such
                                                         as total control of routing to up to 16 outputs,
             as the Haas effect).                        300 scene presets, enormous DSP on-board for          the K-Array KR100s speaker system and the stage
                                                         each channel and all mixing busses, instant USB       foldback system (a separate power amp and two
Finally, to complete the all important speaker           recording and... considering the number of people     new JBL JRX112 foldback speakers).
system setup, the K-Array sub woofers contain            who use this mixing desk... the ability to give each
bi-amps that have digitally controlled equalisa-         operator a password and control what functions        Two Sennheiser wireless mic systems are also
tion (that can be remotely controlled). These were       they can access.                                      included in system, but the receivers are located at
“tuned” to take account of the chapel acoustics and      Daniel also plans to control the M400 via a laptop    the mixing desk, connecting directly to 2 of the 8
ensure appropriate tonal balance.                        computer and he also has the option to record up to   available XLR inputs on the mixer itself.
                                                         40 channels directly to Sonar recording software.
Roland M400 Digital Mixing                               You can read more about the Roland M400 on page       This means that there are 16 inputs available on
      desk takes control                                 11 in this issue of ACCENT.                           stage in addition to the wireless mics... and the
                                                                                                               system allows for more inputs via Cat5e cabling
The mixing position for the chapel is located                All audio through a Digital Snake                 should the need arise... even from elsewhere in Im-
upstairs to the left of the balcony audience. Even                                                             manuel College where there is an available network
in this position the sound from the main speak-          A huge advantage of running a completely digital      point.
ers remains balanced, and a new Roland M400 48           audio system is the ability to run many audio
channel digital mixing desk actually required less       channels over a single Cat5e Ethernet cable... as     Installation was completed early January and, from
space than the old 16 channel analogue mixer it          commonly used in computer networks.                   all accounts, meets the brief superbly.
replaced.                                                The Immanuel chapel system connects the mixing
                                                         console to the stage area via a single network cable         More details from Music EDnet
Immanuel theatre technician and old scholar Daniel       connecting on stage to a Roland S1608 Digital                         Ph 1300 723 700
Gosling was delighted at the simplicity of making        Snake box. This provides 16 input channels (XLR
the change to digital and clearly appreciated the        connectors) than can accept mics and instruments                   info@musicednet.com
                                                         on stage and also 8 x XLR outputs that connect to
K-Array KR100s sub woofer & bi-amp                                                                               Immanuel College is a co-ed Lutheran school (7-12)
                                                                                                                 with approx 900 students located in Novar Gardens.
                                                                                                                 Adelaide SA.

                                                                                                                 Music EDnet has had a very long association with
                                                                                                                 Immanuel College providing and supporting their
                                                                                                                 music and audio technology for close to 20 years.

                                                                                                                                                  Daniel Gosling,
                                                                                                                                                  Immanuel College
                                                                                                                                                  theatre techni-
                                                                                                                                                  cian... “delighted
                                                                                                                                                  with the new
                                                                                                                                                  Chapel sound
                                                                                                                                                  system”.
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