The Lincoln MKT rear door panel accommodates a 6x8 inch speaker size across all listed model years. Full-range units are the compatible speaker types for the audio system. The specifications cover the years 2010 to 2015.
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 on the Lincoln MKT accommodates speakers mounted within the door's inner panel cavity, a position that typically places the driver at or below seat level and angles sound upward and inward toward the passenger cabin.
Door panel mounting subjects speakers to environmental factors such as vibration from the door mechanism, potential moisture ingress, and structural resonance from the door shell itself.
The 6x8 inch oval format is a non-circular geometry, meaning the cone's longest axis spans 8 inches while the shortest spans 6 inches, producing a footprint suited to the elongated cutout dimensions common in door panel mounting locations.
An oval speaker shape in a door panel position allows a larger radiating surface area than a standard 6.5-inch round driver would occupy in a similarly dimensioned cutout, increasing low-frequency displacement capability within the same spatial constraints.
The 6x8 inch size produces a cone area sufficient to move the air volume needed for extended bass response, which is acoustically relevant in a rear door location where low-frequency reinforcement compensates for the physical distance from front-positioned listeners.
The rear door panel position places the speaker behind and to the side of rear-seat passengers, a geometry that affects the stereo imaging and direct sound path relative to the listening position.
Full-range drivers are designed to reproduce the entire audible frequency spectrum from low bass through high treble within a single driver unit, typically incorporating a main cone for low-to-mid frequencies and an integrated whizzer cone or dome for high-frequency extension.
In a rear door panel context, a full-range driver handles all frequency reproduction at that location without requiring a crossover network or supplemental tweeter, simplifying the electrical and mechanical installation within the door cavity.
The full-range type designation across all model years listed for the Lincoln MKT rear door panel indicates a consistent single-driver configuration for the 2010 through 2015 model range at this location.
A 6x8 inch full-range driver in a door panel must manage both bass frequencies, which require cone excursion and cabinet volume, and treble frequencies, which demand cone rigidity and minimal coloration, within the acoustic space defined by the door cavity's internal volume and any deadening material present.