Reply to speaker poping sound help

Hey guys I have a gig tomorrow for a house party that I've actually played for before. Last time I went my speakers kept making random LOUD spikes and cracking noises during my set, thankfully people were pretty forgiving but i'd like to avoid this problem tomorrow. I regularly use my Yahmaha msr 250s at home and they never really pop but I run my laptop, traktor s4 on one outlet and my speaker on another. During my last gig I ran it all on the same outlet and I'm guessing thats where I ran into the problem, so i'm just wondering if i can get any thoughts on this. I am running balanced xlr connections so i dont believe its interference as much as maybe a drop or spike in voltage? (speaker is 250 w rating i believe)

tldr; would running a speaker, pc and mixer off of one outlet cause loud cracks from the speaker