The Mazda CX-7 rear door panel accommodates a 6x8 inch speaker size across all listed model years. Full-range units are the compatible speaker type for the location. These specifications cover the 2007 to 2012 model years.
A single driver that reproduces bass through treble without a separate crossover network. It is the simplest replacement option and is common in factory audio systems.
Additional Notes
The rear door panel location in the Mazda CX-7 positions speakers within the lower portion of the passenger cabin doors, where the mounting surface is integrated into the door's inner trim panel and subject to the spatial constraints of the door's internal structure.
Door panel speaker cutouts are recessed into a cavity shared with window mechanisms and door hardware, which limits available mounting depth and requires attention to clearance between the speaker's magnet assembly and internal door components.
The 6x8 inch oval format spans a larger surface area than a standard round speaker of comparable nominal sizing, allowing the cone to move a greater volume of air from a location that sits low and lateral relative to seated passengers.
The elongated oval geometry of a 6x8 inch driver distributes cone area along both a shorter and longer axis, which influences how the speaker couples acoustically to the door panel cavity and the surrounding interior surfaces.
Rear door placement positions the speaker behind and to the side of rear-seat occupants, a location associated with lateral sound dispersion rather than direct forward projection toward the front of the cabin.
The 6x8 inch size in a door panel mounting context is capable of handling low-midrange and midrange frequencies while also reproducing higher frequencies, making broad-spectrum coverage from a single driver a relevant acoustic consideration for the rear door location.
Full-range drivers are designed to reproduce the audible frequency spectrum from a single cone and voice coil assembly, without the crossover division required by component speaker systems that separate frequencies across distinct drivers.
In the rear door panel of the Mazda CX-7, a full-range driver handles low, mid, and high frequencies from one mounting point, which reflects the spatial limitations of a location that accommodates only a single speaker per door.
The rear door panel location places the speaker at approximately seat-cushion height for rear passengers, a position that affects the angle of sound projection relative to the listening position within the cabin.
A 6x8 inch full-range driver in a door panel installation relies on the door cavity itself as an informal enclosure, where the volume of air behind the cone influences low-frequency response characteristics.