
Solved! It was my cell phone causing interference. Absolutely crazy! Had no idea. Before I left on vacation, AT&T just had 4G service for my Galaxy S3. I returned to find this crackle and after about 2 hours of troubleshooting and head-scratching, I noticed that my cell phone had LTE service... coincidence? NOPE! Turns out the LTE service causes about 5 seconds of interference with the speakers before I get a text/notification. Kinda sucks now I have to keep my phone away from my workstation. It'll cause the problem within about 3 feet of the speakers. hope this helps anybody who has this same problem :)