Accompanying two large video displays, the sound specification - provided by Oslo-based AVAB CAC - needed to cover a number of challenging locations along the course. At the finishing line in front of the Bragernes church, one main hang of 12 MICA line array loudspeakers was augmented by a second set of 12 MICAs for delays, with four 700-HP subwoofers covering the low-end. The city centre location was served by two arrays of eight M3D line array loudspeakers, with the stage area covered by M'elodie units. A Meyer Sound Galileo loudspeaker management system was utilised at each location.
Positioning the speakers was among the many challenges. Ultimately, the arrays were hung alongside the track to avoid disrupting the broadcast team's aerial shots. "With spectators on both sides of the track, there [was] no room to build speaker towers," said Per Ola Holden, AVAB CAC's project manager. "So we used truck-mounted cranes to hang the arrays. Meyer's self-powered feature [made] it much easier for us to deal with this complex set-up."