SPORT CENTER FOR UP TO 1.200 SPECTATORS. Ben Aknoun (Algeria). In the Pavilion’s main hall of Ben Aknoun has been installed 32 OPTIMUS two-way speakers with power rating of 150 W. In other areas, more than 160 speakers with power rating of 30 & 60 W have been placed, all of them controlled through the digital audio matrix UMX. The sports hall also has a simultaneous translation system, UHF wireless microphones and local preamplifiers to facilitate the audio transmission from those locations within the pavilion where the activities take place, towards the speakers.