2014 © Dynamic Audio Visual
In 2009 a major restoration project began in the cathedral to restore it back to
it’s former glory. One of the many stipulations in the installation requirements
was that the loudspeakers had to be as obscure as possible yet remain functional
and clearly audible thought out the building, to achieve this we used Martin Audio
AQ 5 loudspeakers which were stripped and painted to the exact colour of the sandstone
and mounted on the main support pillars in the building. There are additional loudspeakers
in the Chancel area to enable clergy and choir members to hear services and also
two additional loudspeakers in the balcony area. The sound system can be controlled
from two positions in the cathedral this is to facilitate easy use of the system
for day to day services and also allow the cathedral to be used for more challenging
events were a larger sound desk is required, the system is controlled using a DBX
Driverack which provides system compression and protection, equalization and delay
were required, Amplification for the system is provided by Crown XLS series amplifiers.
While the restoration scheme was ongoing we were approached about the feasibility
of hanging a projector screen in the cathedral, this proved challenging as the roof
height in the building is some 14 meters, this problem was solved by using screen
international’s screen winch system, this enables a projector screen housing to be
winched down to a maximum of 9 meters with the screen deploying out when the winch
has reached it’s set level the result is truly stunning, giving the illusion of a
screen suspended in mid air due to the very thin steel ropes used to hold the screen
housing in place. As the architecture of the cathedral is so open the location of
the projector proved another major challenge, it was agreed the projector should
be hidden in the original organ housing at the back of the cathedral some 33 meters
away from the projection screen. This required an exceptionally powerful projector
and lens and after much deliberation we settled on the Hitachi CP-
St Columbs Cathedral is the mother church of the diocese of Derry and Raphoe and is the oldest building in the city of Londonderry built in 1633.
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| St Columbs Cathedral |
| Christ Church Bessbrook |
| Mullaglass COI |
| St Marys Monaghan |
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