The Ram 4500 rear side panel accommodates a 6x9 inch speaker size across all listed model years. Full-range units are the compatible speaker types supported in the rear side panel audio system. These specifications cover the years 2011 to 2016.
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 side panel location in the Ram 4500 accommodates speakers mounted within the interior panel structure along the rear sides of the cabin, a position typically set at or below ear level for rear-seat occupants.
Panel-mounted speaker locations in large commercial vehicles such as the Ram 4500 are subject to spatial constraints determined by panel depth and the structural reinforcement typical of heavy-duty chassis designs.
A 6x9 inch oval speaker format produces a larger cone surface area than a standard 6.5 inch round driver, which increases low-frequency displacement and allows for greater bass output without a dedicated subwoofer.
The elongated oval shape of a 6x9 inch driver means the mounting cutout and depth requirements differ from circular speakers, and the surrounding panel cavity must accommodate the asymmetrical frame geometry.
The 6x9 inch size in the Ram 4500 rear side panel location positions a relatively large driver toward the rear of the cabin, which can reinforce low-to-mid frequency energy in the areas where rear passengers are seated.
Full-range speakers are designed to reproduce the entire audible frequency spectrum - typically from roughly 60 Hz up to 20 kHz - from a single driver, making the crossover network internal or absent rather than externally managed.
In a rear side panel position, a full-range driver handles both direct high-frequency output and ambient low-frequency fill without reliance on supplementary tweeters or woofers mounted elsewhere in the same zone.
The acoustic dispersion of a 6x9 inch full-range driver is influenced by the cone size; higher frequencies become increasingly directional as the cone diameter increases, which affects the coverage pattern within the rear cabin area.
Full-range compatibility at the Ram 4500 rear side panel location means the mounting depth, baffle cutout, and wiring connections must support a single-driver solution rather than a component system with separate enclosures.
The specifications apply uniformly across the 2011 through 2016 model years, indicating no change in the rear side panel cavity dimensions or speaker mounting configuration during that production span.