The Plymouth Gran Fury rear deck lid accommodates a 6x9 inch speaker size across all listed model years. Full-range units represent the compatible audio system type for the location. These specifications cover the years 1980 through 1989.
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 mounting surface positioned at the base of the rear window, between the passenger cabin and the trunk compartment.
Speakers mounted in a rear deck lid position face upward toward the headliner and rear glass, which influences how sound reflects into the cabin.
The Plymouth Gran Fury rear deck lid accepts 6x9 inch speakers across all listed model years from 1980 through 1989.
A 6x9 inch oval speaker has a larger cone surface area than a standard round 6 inch driver, which supports greater low-frequency displacement and output from a single mounting location.
The elongated oval geometry of a 6x9 inch driver allows a wider mounting footprint in a rear deck that may not accommodate a circular speaker of equivalent cone area.
Full-range speakers are designed to reproduce the entire audible frequency spectrum - bass, midrange, and treble - from a single driver or a coaxially integrated driver assembly.
In a rear deck lid location, a full-range driver handles all frequency reproduction without requiring additional speaker positions elsewhere in the vehicle for basic audio coverage.
The 6x9 inch size in a rear deck application positions larger cone excursion capability near the rear of the cabin, where low-frequency energy can build along the floor and seat surfaces.
Full-range compatibility at the Plymouth Gran Fury rear deck lid location means coaxial designs with integrated tweeters are among the applicable driver types, allowing high-frequency dispersion upward from the deck surface.
The rear deck lid mounting plane is generally flat and load-bearing, which means speaker cutout dimensions and depth clearance above the trunk cavity are relevant physical constraints for 6x9 inch driver selection.