The Jeep Compass rear deck lid accommodates a 6x9 inch speaker size. Full-range units represent the compatible audio type for the rear deck lid location. These specifications cover the 2017 model year.
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 Jeep Compass positions speakers within a horizontal surface behind the rear seating area, where the enclosure formed by the trunk and cabin boundary supports bass reinforcement through acoustic coupling with the interior space.
A 6x9 inch speaker in the rear deck lid orientation mounts flat within a cutout on the parcel shelf, requiring sufficient depth clearance beneath the mounting surface to accommodate the driver's basket and magnet assembly without contact with structural components below.
The oval geometry of a 6x9 inch driver produces a larger cone surface area than a circular 6.5 inch speaker, which translates to greater air displacement and stronger low-frequency output from a rear deck position.
At the rear deck lid location, a 6x9 inch driver's increased cone mass and surface area allow extended low-frequency reproduction that reinforces bass energy traveling forward into the cabin toward the listening position.
The 2017 Jeep Compass rear deck lid accepts a 6x9 inch driver, meaning the mounting ring diameter, depth clearance, and screw hole pattern of the replacement speaker must conform to that footprint for a direct fit.
Full-range speakers integrate multiple frequency-handling elements, typically a woofer cone and a small high-frequency tweeter or whizzer cone, within a single driver housing, allowing a single mounting cutout to reproduce both low and high frequencies simultaneously.
At a rear deck lid position, a full-range driver's high-frequency component faces a directional disadvantage, as tweeters radiate sound most effectively on-axis, and the rear deck aims output upward and rearward rather than directly toward the front listening area.
The woofer component of a full-range 6x9 inch driver handles mid-bass and lower midrange frequencies, which are less directional by nature and propagate through the cabin with less sensitivity to the speaker's physical orientation relative to the listener.
Mounting a full-range driver in the rear deck lid requires the surface material to be acoustically transparent or perforated, as any obstruction above the cone would attenuate high-frequency output, which is the most directional and surface-sensitive range the driver produces.