The Cadillac Cimarron rear deck lid accommodates a 6x9 inch speaker size across all listed model years. Full-range units are the compatible type for the audio system at this location. These specifications cover the years 1982 through 1988.
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 of the Cadillac Cimarron is a horizontal surface positioned at the base of the rear window, above the trunk cavity, placing speakers in a top-firing orientation directed toward the cabin interior.
A top-firing position at the rear deck means sound travels forward and upward into the passenger compartment, typically covering the rear seating area with the widest dispersion angle.
The 6x9 inch oval format is among the larger standard speaker dimensions used in automotive installations, with the elongated oval shape allowing a larger cone surface area than a round equivalent would fit in the same horizontal space.
The greater cone surface area of a 6x9 inch driver enables higher low-frequency displacement compared to smaller sizes, making the rear deck lid a location well suited for reproducing bass and lower midrange frequencies with physical authority.
The Cadillac Cimarron rear deck lid accommodates 6x9 inch speakers across the 1982 through 1988 model years, indicating a consistent mounting cutout and baffle dimension throughout the entire production span of the vehicle.
Full-range is the sole compatible type listed for the rear deck lid location, designating drivers engineered to reproduce the full audible spectrum - from low bass through high treble - within a single enclosure.
A full-range driver at the rear deck position handles low, mid, and high frequencies without requiring a separate crossover network or additional driver, which corresponds with the spatial constraints of a factory-installed single-speaker location.
The rear deck surface area in a compact sedan such as the Cimarron typically provides limited depth below the mounting plane, a spatial constraint that influences the acceptable basket depth of any 6x9 inch driver installed at this location.
Sound emitted from the rear deck lid travels through the cabin toward the front, and the distance between the rear deck and the front listening position creates a natural time delay relative to any front-mounted speakers in the vehicle.