The Plymouth Sundance rear door panel accommodates a 5x7 inch speaker size across all listed model years. Full-range units represent the compatible audio system types for the rear door panel location. These specifications cover the years 1987 to 1994.
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 Plymouth Sundance positions speakers within the lower portion of the door cavity, where the enclosure depth and baffle surface are determined by the door's interior panel structure.
A 5x7 inch oval driver occupies a larger surface area than a standard round 5.25 inch speaker, allowing for greater cone displacement and improved low-frequency output within the rear door panel mounting cavity.
The oval geometry of a 5x7 inch speaker is commonly used in door panel applications because the asymmetric dimensions allow fitment in mounting cutouts where a circular driver of equivalent cone area would not accommodate the available vertical or horizontal clearance.
Rear door panel placement tends to favor lower-frequency reproduction due to the physical distance from the listening position and the acoustic loading effect of the door cavity behind the speaker cone.
The Plymouth Sundance rear door panel accepts only full-range speakers across all specified model years, meaning the driver at the rear door panel location is responsible for reproducing the entire audible frequency spectrum without the support of a dedicated tweeter or subwoofer in that position.
A full-range driver in a rear door panel location handles frequencies from the low bass region through upper treble, though the rear door mounting environment typically reinforces midbass frequencies due to the enclosed air volume behind the cone.
The 5x7 inch full-range driver's elongated cone contributes to directional dispersion characteristics that differ from circular cones, with horizontal and vertical dispersion patterns influenced by the axis of the oval's longer dimension relative to the listening area.
Because the rear door panel sits below and behind the primary listening position in a passenger vehicle, full-range drivers mounted there contribute ambient and spatial audio reproduction rather than direct high-frequency content aimed at the ears of occupants.