WARNING: This page is about a different car, the 2018 Nissan Titan XD and 2018 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.
15.2 x 22.9 cm (6 x 9 in) speakers are installed in the bottom of the front doors.
Courtesy of NISSAN NORTH AMERICA, INC.
Sound signals generated by the audio unit output low range sounds.