The Acura CL rear deck lid accommodates a 6x9 inch speaker size across all listed model years. Full-range units are the compatible types for audio system replacement in the rear deck lid location. The specifications cover a range of years from 1997 to 2003.
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 is a horizontal surface positioned at the base of the rear window, behind the rear seating area, placing speakers in a location that projects sound upward and forward into the cabin.
Mounting on the rear deck lid places drivers at a distance from front occupants, which affects time-of-arrival characteristics and can influence stereo imaging across the listening space.
The 6x9 inch oval format is a elongated design that achieves greater cone surface area than a standard 6.5 inch round driver, which increases low-frequency displacement capability within the same depth constraints typical of a rear deck lid cavity.
The physical dimensions of a 6x9 inch driver allow for a larger voice coil and longer excursion range, supporting extended bass reproduction that suits the rear deck lid's role as a primary low-frequency reinforcement position in many factory audio configurations.
The Acura CL rear deck lid accommodates a 6x9 inch footprint, meaning replacement speakers must match the oval mounting cutout and bolt pattern to achieve a secure fit without modification.
Rear deck lids are typically constructed from pressed fiberboard or composite material, which provides a relatively rigid but acoustically resonant surface that can interact with speaker output at certain frequencies.
Full-range drivers are designed to reproduce frequencies across the audible spectrum, generally from approximately 60 Hz to 20,000 Hz, from a single cone and integrated tweeter or whizzer cone assembly.
A full-range driver in the rear deck lid position handles bass, midrange, and treble simultaneously, without the need for an external crossover network to divide the signal between separate driver types.
The rear deck lid location places the 6x9 inch full-range driver near the rear window glass, which can create acoustic reflections that affect high-frequency dispersion within the cabin.
Because the rear deck lid sits below and behind rear passengers, a full-range driver mounted there reproduces vocals and upper-midrange content at an oblique angle relative to front-seat listeners.