Something for those who wants more bass but needs the trunk space. Installed a Kenwood KSC-SW10 Compact Powered Subwoofer which fits nicely under the driver's seat. Little drawback where it blocks the floor a/c vent for the rear passenger compartment but I ain't complaining.
Running the power supply wire.
Wire enters behind the glovebox close to the radio. engine cover pulled foward for view.
Fuse access behind the glovebox.
Subwoofer in it's home.