aux in sound issue

[tuco]

I've just changed my grey cd head unit for a black one and the sound from the aux in is tinny and completely lacking in bass ? it was fine on the grey unit, any idea ? as i haven't got a clue !

 

[Sidewaze Samm]

I'm guessing the aux-in socket for the grey unit was a retrofit, as I don't think the aux-in sockets became standard until late 2006. If your new black unit is from a post-2006 car, then maybe that has something to do with it. Obvious, but have you tried to adjust the tone/volume of the aux source on the new head unit? From past experience with a 2007 car I know it's possible, but I can't do it on my black head unit - which is early 2006 and has a retrofit aux-in socket.
So basically, I've no idea either... :idunno:

 

[tuco]

I don't know the age of the car my head unit is from, I'll take the vents/unit out again and refit the cable, see if it makes any difference.

 

[tuco]

Tried it again, still no bass? Also put the grey unit back in and sound is fine. Maybe I need another aux in cable.