As above, I'm a relatively new owner to the octavia, the sterio is decent but looses puff once anything with a little base is played, I have the simple 6 CD player with factory mp3 lead set up, is there anyway I can add a sub to this set up?? Thanks in advance. Jon

Post this in the ice section of the forum, they helped me sort out pretty much the same thing as you but I have satnav so what was right for me may not be the same as you

easy enough buddy, i'm toying with doing a stealth box in one of the rear compartments.

 

bung a search through, should find your answer.