Solved When does a dup sound comes out of a pa speaker Tags: Pro Audio Speakers Audio Last response: February 6, 2010 2:00 AM in Home Audio Share abdielsam January 30, 2010 5:55:13 AM why does a dup sound comes through the pa speaker ,when the amp is switched on...... More about : dup sound speaker Best solution Anonymous January 30, 2010 6:11:41 AM I suspect it's usually the power supply. Many amplifiers use a timed electromechanical relay switch that isolates the speakers until the power supply has settled down. abdielsam February 6, 2010 2:00:52 AM Best answer selected by abdielsam. Can't find your answer ? Ask ! Publish Related resources: ForumBoot problem w/ KT-400 DUP ForumThose new Bose PA speakers ForumWhat is the diff between hifi amps and PA amps ForumPA speaker question ForumAdvice PA sound problem speakers ForumSound Comes in and out ForumWhwn i plug in my guitar to my pc no sound is coming out thorugh speaker but wit ForumOpinions for Church PA and Recording/Control Room Mix ForumPower amp for church PA ForumUse PA or Backline for electric guitars?? ForumPA help please! 12" top suggestions ForumPA set up Advice ForumGETTING SOUND FROM MODEM TO COME OUT OF MY SPEAKER ForumComputer freezes randomly no blue screen and sound out of one speaker ForumSP2500's or Another Subwoofer? ForumHow to enable the sound card ForumAsus ROG's dedicated sound card ForumMy realtik 97 sound drive and new graphic card problem ForumNo audio sound coming from my computer. ForumFisher ST-760 Speaker More resources Read discussions in other Home Audio categories Headsets High-End Audio MP3 Players Pioneer Pro Audio Speakers Yamaha !