The Saturn Relay-3 rear location accommodates a 6x9 inch speaker size, consistent across all listed model years. Compatible types for the rear installation include full-range units. These specifications cover the years 2005 to 2007.
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 Saturn Relay-3 accommodates a 6x9 inch mounting footprint across the 2005, 2006, and 2007 model years.
A 6x9 inch speaker occupies a larger surface area than round speaker formats, which allows for a longer cone excursion and greater low-frequency displacement within the mounting cavity.
The elongated oval shape of a 6x9 inch driver means the mounting depth and baffle cutout dimensions are asymmetrical, requiring precise alignment during installation to match the vehicle's rear speaker opening.
In a rear vehicle location, 6x9 inch speakers are positioned to reinforce the lower-midrange and bass frequencies that travel forward through the cabin toward front-seat occupants.
The Saturn Relay-3 rear location is compatible exclusively with full-range speaker types, meaning a single driver in the 6x9 inch format is designated to handle the entire audible frequency spectrum at that position.
Full-range speakers typically incorporate a woofer cone for low and midrange frequencies alongside an integrated tweeter or whizzer cone for high-frequency reproduction, consolidating multiple frequency roles into 1 driver unit.
Because the rear location in the Saturn Relay-3 relies on full-range drivers rather than component separates, no external crossover network is required at the rear mounting points.
The acoustic output from a 6x9 inch full-range driver at a rear vehicle position tends to project omnidirectionally within the enclosed cabin space, contributing to the overall soundstage perceived by all seating positions.
The 6x9 inch format's relatively large cone area means rear placement within the Relay-3 allows the driver to move sufficient air volume to supplement bass frequencies without a dedicated subwoofer at that location.