SMR2717

I have installed a Pioneer AVH-4200NEX with a set of 4 Rockford Fosgate Punch P1683 door speakers and all works fine but I am having a weird issue where the driver door speaker plays at low volume but upon adjusting the volume on the radio to a high level or increasing the db settings for the speaker output level to 10 db for the driver door speaker it plays at proper volume but keeps reverting to low volume just from this one speaker but the other 3 speakers have proper volume output. Any solution as to what is causing this issue?