The Saturn Relay-1 rear location accommodates a 6x9 inch speaker size. Full-range units represent the compatible audio system type for the rear installation. These specifications apply to the 2007 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 speaker location in the 2007 Saturn Relay accommodates a 6x9 inch driver, an oval format that fits within mounting cavities designed to house elongated speaker frames rather than circular ones.
A 6x9 inch speaker occupies a larger surface area than a standard round driver, which generally allows for a larger cone excursion range and greater low-frequency displacement within the rear cabin space.
The oval geometry of a 6x9 inch driver means the mounting depth and baffle cutout dimensions follow a non-circular template, requiring precise alignment during installation to seat the frame flush against the mounting surface.
Full-range is the sole compatible speaker type listed for the rear location of the 2007 Saturn Relay, meaning a single driver is responsible for reproducing the entire audible frequency spectrum at that position.
A full-range driver integrates a woofer cone with a smaller passive radiator or whizzer cone, allowing mid and high frequencies to be handled by the same unit that also moves air for lower frequencies.
In a rear cabin position, a full-range driver handles frequencies typically spanning from around 50 Hz to 20 kHz, covering bass, midrange, and treble reproduction from a single mounted unit.
The rear placement of a full-range driver in a vehicle cabin means the speaker radiates sound toward the occupants from behind, contributing to ambient and fill coverage rather than front-stage imaging.
The 6x9 inch format in a rear location benefits low-midrange reproduction due to the increased cone area, which can move more air at lower frequencies compared to smaller oval or round formats at the same position.