Already listened club (big club) the sound was NIKEL, Serious acute medium, with a good yield! And ??????? !!! for notice below ... I think there was not the processor or equalizer BOSE.Sans that, it is normal that the sound does not pass! And it changes a little, instead of seeing always Wholesale Sound Systems At least one discreet system in a big club ^^ Note:. 9/10 (DJs @)