The Dodge Aries rear deck lid accommodates a 5x7 inch speaker size across all listed model years. Compatible types for the audio system include full-range replacement units. These specifications cover the years 1981 to 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 location in the Dodge Aries sits at the base of the rear window, mounted horizontally within the package shelf panel above the trunk compartment.
Across all model years listed, the Dodge Aries rear deck lid accepts a 5x7 inch speaker opening, an oval format that fits within the relatively shallow vertical depth typical of rear deck panels.
The oval 5x7 inch dimensions allow a larger radiating surface area than a round 4 inch driver while still fitting within the constrained width and depth of a rear deck lid cutout.
The rear deck lid position places speakers at roughly ear level for rear-seat passengers and at an upward-firing angle relative to the cabin ceiling, influencing how sound disperses toward the front of the vehicle.
The horizontal, upward-facing orientation of the Dodge Aries rear deck lid mounting means bass frequencies produced by a 5x7 inch driver are partially absorbed by rear window glass and seat materials before reaching the front cabin.
A 5x7 inch driver produces a longer cone axis along the 7 inch dimension, which contributes to lower frequency extension compared to smaller oval or round drivers, allowing the rear deck to carry meaningful midrange and upper bass reproduction.
Full-range is the only compatible speaker type specified for the Dodge Aries rear deck lid location across all listed years, indicating the single driver is intended to handle the complete audible frequency spectrum without the support of a dedicated tweeter or subwoofer at that position.
A full-range speaker reproduces frequencies from the low bass region through the upper treble, typically spanning approximately 50 Hz to 20,000 Hz, relying on cone geometry and a whizzer cone or similar mechanism to extend high-frequency dispersion.
In a rear deck lid position, a full-range driver bears the acoustic responsibility for both rear-fill ambience and frequency balance in the rear seating area without additional crossover components splitting duties to separate drivers.
The rear deck lid's distance from the front listening position introduces a time-delay factor between front and rear sound sources, which affects perceived stereo imaging when full-range rear deck speakers are active alongside front-mounted drivers.