The Ram 1500 rear door panel accommodates a 6x9 inch speaker size across all listed model years. Full-range speakers are the compatible audio system type for the rear door panel location. These specifications cover the range of 2011 to 2018.
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 Ram 1500 positions speakers within the lower portion of the door structure, mounting them at roughly seat level and angled toward the cabin interior.
A 6x9 inch speaker occupies a notably elongated oval footprint, which requires a door panel cavity with sufficient depth and surface area to accommodate both the frame and the rear basket clearance without interference from door hardware or window mechanisms.
The 6x9 inch format produces a larger cone surface area than round equivalents such as 6.5 inch speakers, which allows greater air displacement and stronger low-to-mid frequency output from the rear door position.
At the rear door panel location, the increased cone area of a 6x9 inch speaker contributes to bass reinforcement within the cabin, since rear-mounted speakers in trucks are physically distanced from front occupants and benefit from higher displacement to maintain perceived low-frequency presence.
The Ram 1500 rear door panel placement reflects a side-firing orientation, meaning sound radiates laterally across the cabin rather than forward, which affects stereo imaging and low-frequency distribution across the seating area.
Full-range is the sole compatible speaker type listed for the Ram 1500 rear door panel across all specified model years, indicating the mounting location accommodates a single driver intended to reproduce low, mid, and high frequencies without a dedicated crossover network.
A full-range driver in a rear door panel location handles the full audible spectrum independently, which is acoustically practical in a position where space or wiring configuration may not support a component speaker setup requiring separate tweeter placement.
The rear door panel of a truck cab typically presents a sealed or semi-sealed mounting surface, and the enclosure characteristics of the door cavity influence how the 6x9 inch woofer cone behaves at lower frequencies, particularly affecting bass extension and resonance.
Full-range speakers in rear door panel positions reproduce upper-mid and high frequencies at a greater distance from front occupants compared to dash or A-pillar-mounted tweeters, which can affect the perceived treble balance within the cabin.