ah, that would explain the naff sound then

dont usually get much from 4inchers. made some homemade door podss for my mk2 granada and have 13cm components. made a world of difference having them mounted in the pods compared to being in just the standard door card location

depending on the size of speakers you get on the parcel shelve will decide if yo uneed to amp them or not though. if they are only 13cm (17 at a push) then the headunit should be alright for powering them up

also worth going through the headunit setup options and having a tweak too, even just to turn loudness OFF