The Lincoln Zephyr rear door panel accommodates a 6x8 inch speaker size. Full-range units represent the compatible audio type for the system. These specifications apply to the 2006 model year.
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 2006 Lincoln Zephyr accommodates a 6x8 inch speaker cutout, an oval format that fits within the dimensional constraints typical of mid-size rear door cavities.
A 6x8 inch oval speaker occupies a larger surface area than a circular 6.5 inch driver, allowing for a longer cone excursion axis that supports lower frequency extension without requiring a dedicated subwoofer in the door.
The oval geometry of a 6x8 inch driver produces a directivity pattern that differs from circular cones, as the asymmetrical shape causes the horizontal and vertical dispersion angles to vary, which affects how sound radiates into the rear cabin area.
Rear door panel locations are typically recessed within a shallow mounting depth determined by the inner door structure and window mechanism, meaning the physical depth clearance behind the mounting surface is a critical factor for speaker fitment.
The mounting surface of a rear door panel is angled relative to the seated rear passenger, placing the speaker in a position where off-axis response characteristics of the installed driver influence how rear occupants perceive the sound.
Full-range drivers are designed to reproduce the audible frequency spectrum from low bass through high treble within a single driver unit, without relying on passive crossover networks to separate frequency bands across multiple dedicated drivers.
In a rear door panel location, a full-range driver handles both the midbass frequencies that convey warmth and body in music and the upper midrange frequencies responsible for vocal clarity and instrument definition.
The 2006 Lincoln Zephyr rear door panel's compatibility with full-range type speakers means the location is configured for a single-driver solution, where the 6x8 inch cone must manage the full spectrum demands placed on the rear channel of the audio system.
Full-range drivers in rear door positions contribute to the overall soundstage of a vehicle audio system by reinforcing the lower and mid frequencies that support the front stage, given the rear placement relative to the primary listening position.