Providence Equity, a private equity firm, agreed to acquire a majority stake in d&b Audiotechnik, a loudspeaker and amplifier manufacturer, from Ardian, a private equity firm. Financial terms were not disclosed. "The needs of customers in live entertainment are becoming ever more complex, which has expanded d&b's addressable opportunities. We were impressed by d&b's passionate management team and, with Providence's resources and network, we are committed to supporting d&b's strategic plan," Andrew Tisdale, Providence Senior MD.