I recently bought a 2011 Insight. The speakers sounded like crap, so I had them replaced with 4 Focals ICS165. It cost me 350 euros and the sound still is very poor. Especially the 2 speakers in the back doors sound really poor. Because I'm afraid to try to change anything myself, but also don't want to spend a lot more on paying others to do it for me, I have the wish to add an underseat-sub. But I can't find details on the Satnav SSD headunit (see attached pic). I want to know if this thing has a connection for a subwoofer? If not, I guess I could use the cables that now are connected to the rear speakers. Does anyone know how (and where) I can grab these cables and lead them to a place under the seats (or maybe to the trunk in case I buy a sub for the spear wheel area)?