So I decided to post this outside my build log to see if anyone might have any ideas to help me solve this issue.  Equipment:  SLS 8inch Midbass Drivers running 60hz - around 200 i think. Mounted in the doors w/ a pretty solid treatment of SDS  MLV, CCF, and CLD. Shitty GM doors aside, its a pretty solid installation.  kicker 250.2 bridge to each side Description of problem: Midbass from left side is quieter by rough 1/2 to the ear w/ an 80Hz sine wave tone (measures aro