Does anybody know if 520i has woofers under front seats?

I cannot hear any sound from the front seats.

Sorry I asked the same question in Parts, Accessories and Mods because of my mistake.

 

need more info bud, where are you from? us/uk europe?, sound system fitted?

normal system :- 6 mid-range speakers, front doors, rear parcel shelf and under the front seats, UK Euro standard spec system.

Hi-FI System :- 6 mid-range and 4 tweeter speakers, front doors, rear parcel shelf and under the seats, US standard spec system.

then there's Logic7 and the individual sound systems too.

 

If you are in the US, you have under seat subs.

Look under your seats. If you see black, metal grills on the floor near the doors, those are the subs.

 

can those woofers be upgraded to anything better without giving up the stealth fitment?

 

yes they can. bruce_miranda has given us all extensive insight on the matter: http://forums.e60.net/index.php?showtopic=47747