Damn - maybe it is a bad speaker - lol. What about popping the drivers side speaker out just for fun.
You mentioned it was a new stereo - or just installed? Are you running through an amp? Balance is set correct

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Bought it and installed it yesterday
Before i disconnected everything I swapped the drivers and passenger speakers, still nothing on the passenger side. the balance was at 0 and so was the fade before i popped it out. Gonna put it all back together just to see what happens, then take the head unit back i guess?