Vehicle audio structure

1. A vehicle audio structure comprising

a vehicle floor having a plurality of mounting locations;

a seat assembly mounted to the vehicle floor at the plurality of mounting locations, the seat assembly having a seat bottom spaced apart from the vehicle floor, the seat bottom having a seating surface and a bottom surface opposite the seating surface with a partially confined area defined between the vehicle floor and the bottom surface;

an enclosure structure located within the partially confined area under the seat assembly, the enclosure structure having an upper wall located adjacent to the bottom surface of the seat bottom, a first bottom wall section, a second bottom wall section, a third bottom wall section and a plurality of side wall sections that define an enclosed space within the enclosure structure, the first bottom wall section and the upper wall being spaced apart by a first vertical distance, the second bottom wall section and the upper wall being spaced apart by a second vertical distance and the third bottom wall section and the upper wall being spaced apart by a third vertical distance, the first vertical distance being greater than both the second and third vertical distances, the third vertical distance being greater than the second vertical distance, the second bottom wall section having an interior surface and an exterior surface with an audio driver opening extending from the interior surface to the exterior surface; and

an audio driver mounted to the second bottom wall section covering the audio driver opening.

2. The vehicle audio structure according to claim 1 , wherein

the audio driver is installed to the exterior surface of the second bottom wall section outside the enclosed space of the enclosure structure.

3. The vehicle audio structure according to claim 2 , wherein

the audio driver faces the upper wall of the enclosure structure.

4. The vehicle audio structure according to claim 1 , wherein

the enclosure structure defines a cavity between the second bottom wall section and the vehicle floor, with at least a majority of the audio driver being located within the cavity and outside the enclosed space of the enclosure structure.

5. The vehicle audio structure according to claim 4 , wherein

the third bottom wall section and the vehicle floor define an air path that extends from the cavity to an area outside the partially confined area under the seat assembly.

6. The vehicle audio structure according to claim 5 , further comprising

a second seat assembly attached to the vehicle floor proximate the seat assembly, with the air path extending from the audio driver to an area adjacent the second seat.

7. The vehicle audio structure according to claim 4 , further comprising

a guard member positioned within the cavity and encompassing the audio driver.

8. The vehicle audio structure according to claim 1 , wherein

the seat assembly includes a seat back supported to the seat bottom for movement between an upright orientation and an inclined orientation, and

a rearward most one of the side walls of the enclosure structure has a rear surface positioned forward in a vehicle longitudinal direction of a rearmost portion of the seat back.

9. The vehicle audio structure according to claim 1 , wherein

the first bottom wall section is located forward of the second bottom wall section relative to a vehicle longitudinal direction.

10. The vehicle audio structure according to claim 1 , wherein

the third bottom wall section is located rearward of the first and second bottom wall sections relative to a vehicle longitudinal direction.

11. The vehicle audio structure according to claim 1 , wherein

the first bottom wall section extends adjacent to a portion of the vehicle floor and the second and third bottom wall sections are spaced apart from the vehicle floor.

12. The vehicle audio structure according to claim 1 , wherein

the first bottom wall section and the upper wall define a first portion of the enclosed space.

13. The vehicle audio structure according to claim 12 , wherein

the second bottom wall section and the upper wall define a second portion of the enclosed space, and

the third bottom wall section and the upper wall define a third portion of the enclosed space.

14. The vehicle audio structure according to claim 13 , wherein

the enclosure structure includes a fourth bottom wall section spaced apart from the upper wall, the fourth bottom wall section and the upper wall defining a fourth portion of the enclosed space that extends in a vehicle longitudinal direction adjacent the first, second and third portions of the enclosed space.

15. The vehicle audio structure according to claim 1 , wherein

the first bottom wall section has an L-shape with a first portion that extends in a vehicle lateral direction adjacent to the second bottom wall section and a second portion that extends in a vehicle longitudinal direction adjacent to the second bottom wall section.

16. The vehicle audio structure according to claim 1 , wherein

the first bottom wall section has a U-shape with a first portion that extends in a vehicle longitudinal direction adjacent to a first side of the second bottom wall section, a second portion that extends in a vehicle lateral direction adjacent to a front side of the second bottom wall section and a third portion that extends in a vehicle longitudinal direction adjacent to a second side of the second bottom wall section.

17. The vehicle audio structure according to claim 16 , wherein

the third bottom wall section extends in a vehicle lateral direction between the first and third portions of the first bottom wall section such that the first bottom wall section and the third bottom wall section encircle the second bottom wall section.

18. The vehicle audio structure according to claim 1 , wherein

the plurality of mounting locations of the vehicle floor includes at least a first mounting location and a second mounting location spaced apart from one another,

the seat assembly includes at least one support track mounted to the first mounting location and to the second mounting location such that the partially confined area is further defined between the at least one support track and the vehicle floor, and

the upper wall of the enclosure structure includes a first section that extends under the at least one mounting track.

19. The vehicle audio structure according to claim 18 , wherein

the plurality of mounting locations of the vehicle floor includes at least a third mounting location and a fourth mounting location spaced apart from one another,

the seat assembly includes a second support track mounted to the third mounting location and to the fourth mounting location such that the partially confined area is further defined between the second support track and the vehicle floor, and

the upper wall of the enclosure structure includes a second section that extends under the second mounting track.

20. The vehicle audio structure according to claim 1 , wherein

the plurality of mounting locations of the vehicle floor includes a first mounting location, a second mounting location, a third mounting location and a fourth mounting location spaced apart from one another,

the seat assembly includes a first support track mounted to the first mounting location and to the second mounting location and a second support track mounted to the third mounting location and the fourth mounting location such that the partially confined area is further defined between the first support track and the vehicle floor, and the second support track and the vehicle floor, and

the upper wall of the enclosure structure includes a first section that extends under the first mounting track and a second section that extends under the second mounting track.