The Eagle Summit rear door panel accommodates a 6x9 inch speaker size in that location. Full-range units represent the compatible audio system type for the rear door panel. These specifications cover the years 1989 to 1995.
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 Eagle Summit rear door panel accommodates 6x9 inch speakers across all listed model years from 1989 through 1995.
A 6x9 inch speaker occupies a notably elongated oval footprint, which requires a door panel cutout and mounting depth sufficient to house the larger basket diameter without interference from window mechanisms or door structure behind the panel.
The rear door panel location places speakers within the lower portion of the passenger cabin, meaning bass and lower midrange frequencies radiate upward and forward into the seating area rather than at ear level.
The 6x9 inch format produces a larger cone surface area compared to round speakers of similar nominal size, which increases air displacement and supports stronger low-frequency output within the door cavity.
Full-range is the only compatible speaker type listed for the Eagle Summit rear door panel, indicating the mounting location is designed to handle a single driver responsible for the entire audible frequency spectrum from low bass through high treble.
A full-range driver integrates a main cone for low and midrange frequencies with a small whizzer cone or dome tweeter element at the center, allowing a single unit to reproduce a wide frequency band without a separate crossover network.
In a rear door panel position, a full-range 6x9 inch speaker handles bass reinforcement alongside midrange vocals and upper frequencies, as the door cavity acts as a partial acoustic enclosure that can influence low-frequency response.
The 6x9 inch driver's elongated shape affects dispersion characteristics, with horizontal and vertical radiation patterns differing from those of a circular cone, which influences how sound from the Eagle Summit rear door panel distributes through the rear cabin space.
Mounting a full-range driver in a door panel exposes the speaker to potential mechanical vibration from road surfaces and door operation, making the structural rigidity of the mounting surface relevant to cone excursion and distortion at higher volumes.
The rear door panel position in a passenger vehicle typically involves limited mounting depth, and the 6x9 inch format requires sufficient clearance behind the mounting surface to accommodate the speaker's magnet assembly and basket depth without contact with internal door components.