The Ford Taurus rear deck lid supports 6x8 inch speakers and 3.5 inch speakers, and accommodates a 6x9 inch speaker size across applicable model variants. Full-range units represent the compatible audio system type for all listed entries. These specifications cover a range of years from 1986 to 2019.
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 deck lid is a horizontal surface spanning the width of the trunk area, positioned at the base of the rear window. Speakers mounted in the deck lid fire upward toward the passenger cabin, with sound traveling forward through the cabin space.
The deck lid location places speakers at the rearmost point of the interior acoustic environment, meaning the drivers radiate sound across the greatest distance to reach front-seat occupants.
The 6x9 inch oval format has a larger cone surface area than round speakers of similar height, which increases low-frequency displacement and extends bass reproduction without requiring a dedicated subwoofer enclosure. In a rear deck position, the added cone area reinforces the lower end of the audio spectrum across the cabin.
The 6x8 inch oval is dimensionally close to the 6x9 inch format but with a slightly shorter major axis. The cone area difference affects bass output and overall loudness efficiency, though both formats occupy similar mounting footprints in the deck lid panel.
The Ford Taurus rear deck lid in 1990 and 1991 lists both 6x9 inch and 6x8 inch as compatible sizes, indicating the mounting cavity accommodated either format during those model years.
Full-range speakers reproduce the entire audible frequency spectrum - low bass, midrange, and high-frequency treble - within a single driver unit. No crossover network or supplemental tweeter is required for basic operation.
In a rear deck lid installation, full-range drivers handle both midrange vocal frequencies and upper harmonics simultaneously, which is acoustically significant given the distance from the listener and the reflective surfaces of the rear glass and trunk lid.
The 3.5 inch full-range size, listed for the 2015 through 2019 model years, has a small cone diameter suited to upper midrange and high-frequency reproduction. At the rear deck location, a 3.5 inch driver contributes detail and presence in the upper frequency registers rather than low-frequency weight.
The Ford Taurus rear deck lid for model years 2015 through 2019 lists both a 6x9 inch and a 3.5 inch position, indicating the deck panel contains at least 2 distinct speaker cutouts of different sizes during those years.
Oval speaker formats like 6x9 and 6x8 are commonly used in deck lid applications because the horizontal orientation of the mounting surface accommodates the wider dimension of the oval, and the lower profile of the oval cone fits within the shallow depth typical of a deck lid cavity above the trunk space.