The Chrysler PT Cruiser rear side panel location accommodates a 6x9 inch speaker size. Full-range units represent the compatible type for the audio system. These specifications apply to the 2005 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 side panel location in the Chrysler PT Cruiser is a fixed enclosure position integrated into the vehicle's interior trim, meaning available depth and baffle dimensions are constrained by the panel's molded cavity rather than adjustable mounting hardware.
A 6x9 inch speaker fits the rear side panel of the 2005 Chrysler PT Cruiser, and the oval format of 6x9 inch drivers is engineered to maximize cone surface area within a space that is wider than it is tall, which suits the geometry typical of side panel cavities.
The greater cone area of a 6x9 inch driver relative to smaller round formats allows for increased air displacement, which supports lower-frequency reproduction within a sealed or semi-open panel enclosure.
Side panel locations place the speaker driver at an angle relative to the primary listening plane of the cabin, so the wider horizontal dispersion of a 6x9 inch oval cone assists in projecting sound across the rear seating area rather than in a tight beam.
Full-range is the only compatible speaker type listed for the rear side panel of the 2005 Chrysler PT Cruiser, meaning a single driver is designated to handle the entire audible frequency spectrum assigned to that position.
A full-range driver in a rear side panel location operates without a passive crossover network directing frequencies to separate components, so the driver itself must manage both upper midrange and lower bass frequencies within the constraints of the panel's acoustic space.
The rear side panel position is typically shielded from direct airflow and road vibration compared to door-mounted locations, which affects the mechanical resonance behavior of a mounted full-range driver during sustained low-frequency excursion.
In a rear side panel cavity, the enclosure volume behind the driver cone is largely determined by the panel structure itself, and a 6x9 inch full-range driver's low-frequency output is directly influenced by how that fixed volume interacts with the driver's mechanical compliance and resonant frequency.