Had trouble with a set of Memphis power reference coax in front doors . The sound stage was to low and gave me sensation that I was deaf in my left ear. After listening to the infinity components I came to the conclusion that any brand coax would have this issue.

Stock HU with Infinity 6830 components in the front with 6832's in the rear of my 2011 SCAB. That along with an MTX Thunderform powered sub makes for a complete night and day transformation to an otherwise mundane factory system.