Britannia Row Productions were engaged to handle the audio production, and deployed systems to cover not just the concert but also the full length of The Mall, St James's Park, Trafalgar Square and Hyde Park (where an Outline GTO system was used on the Commonwealth Stage).
For the main concert area Britannia Row had designed and deployed a main system comprising 96 Outline Butterfly enclosures with 48 Outline Subtech subwoofers for the audience of 20,000 invited guests standing in front of and seated in tribunes around the temporary stage.
Britannia Row's MD Bryan Grant said, "Our brief was to provide an 'invisible' PA - no towers, no flown arrays, but of course it had to sound perfect! We therefore decided on a small, powerful, distributed system and our Outline Butterfly was the obvious choice. We provided six inner Butterfly arrays each stacked four high in the moat to stage height, with a further eight units arranged as infills on and under the forestage.
"The main delays consisted of eight stacks, each six high on platforms in front of the bleachers, with another sixteen Butterfly located as secondary delays in the entrance of The Mall. A ring of Subtechs around the outside of the moat and beneath each delay stack provided the low end, which I have to say was very impressive. We've had many compliments on the quality of the live sound so I'm pleased to say the plan worked."
Look out for our full report on the production of the Jubilee Concert in the forthcoming July 2012 issue of LSi magazine - available mid-July in Print & Digital editions, and via our iPhone & iPad apps.
(Jim Evans)