Pure AV selects Martin Audio DD6’s to meet acoustic challenges of circular lecture space at the University of Liverpool’s Brett Building.
Following a £5m refurbishment of Liverpool University’s Senate Drum building, a new teaching facility, complete with advanced AV infrastructure, has been opened under the new name of the Brett Building.
Pure Audio Visual was awarded the contract for the upgrade, and the challenge of providing consistent audio in an aesthetically beautiful but acoustically awkward cylindrical shaped building.
Richard Lister, Pure AV technical director, who led the response to the original tender comments,
“our bid was based on providing the best solution; the audio element was key to that because achieving even coverage for both voice reinforcement and programme sound was the most challenging part of the contract".
Pristine audio and excellent sound clarity.
Fully optimised sound and consistent audio coverage.
“The clarity of the sound is excellent — its way better than anything we had expected and everyone is impressed.” Gary Swift, AV Manager, University of Liverpool.
Flexible audio for a versatile presentation space
Pure AV’s systems integration specialist Colin Hasted decided the best means of providing pristine audio in the space which will be used by senior members of the university and MBA students, were Martin Audio DD6’s.
Since the space also needed to incorporate break out facilities, and be used as a conference and exhibition space as well as for lectures, the DD6’s needed to demonstrate versatility, as well as meet coverage requirements over wide angles and medium throw distances.
Controlled directivity for even coverage
“We looked to the market for a small box solution with a controlled directivity that could be placed around the edge of the room and provide even coverage across the audience areas — and more importantly, keep that sound away from the presenter,” said Hasted.
Hasted’s rationale was further based on the limited space and ceiling height behind the presenter which immediately suggested that a distributed system was the best option. Overhead speakers were ruled out due to the artistic ceiling centrepiece — an elaborate sunburst through which daylight from the skylight above is channelled through wooden slats.
Thus seven DD6 units, each individually controlled, and processed via BSS Soundweb London BLU-101 (with Acoustic Echo Cancellation), are spaced equidistant around the room; these cover the audience area with a slight graduation in level towards the back of the room.
“This, as well as the exceptional acoustic treatment provided by the main contractors [Aspect Construction], gives the illusion of solid front- on coverage,” Hasted continued. “EQ usage was minimal as the DD6 provided clear and crisp voicing straight out of the box, a speaker I would thoroughly recommend for future speech applications.”
For a complete overview of the solution, please read the full case study available to download from this page.