The Saturn Relay-2 rear location accommodates a 6x9 inch speaker size, consistent across all model years. Compatible types for the rear installation include full-range audio units suited for the system. These specifications cover the 2005 to 2007 model year replacement chart range.
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-2 accommodates a 6x9 inch mounting footprint, an oval form factor that requires an appropriately shaped mounting cavity rather than a standard circular cutout.
A 6x9 inch driver has a larger cone surface area than most round speaker formats of comparable nominal diameter, which increases air displacement and contributes to stronger low-frequency output from a rear placement.
The rear position in a minivan cabin like the Relay-2 places speakers at a distance from front occupants, a characteristic that favors drivers capable of projecting sound across a longer interior space.
Full-range is the sole compatible type listed for the rear location across all 3 model years in the specifications, meaning a single driver is designated to handle the complete audible frequency spectrum at that position.
A full-range driver reproduces low, mid, and high frequencies without a dedicated crossover network, relying on the cone and tweeter components integrated within a single unit to cover the broad frequency range.
The rear mounting depth and baffle dimensions of the Saturn Relay-2 rear location must be compatible with the physical depth profile typical of 6x9 inch full-range drivers, which tend to have deeper basket assemblies than smaller round formats.
The 6x9 inch format in a rear cabin position is oriented to provide wide dispersion across rear seating rows, as the oval cone geometry distributes sound horizontally and vertically within the enclosure.
Full-range drivers at a rear location carry the full tonal responsibility for that zone without supplemental subwoofers or tweeters unless externally added outside the specified configuration.
The Saturn Relay-2 rear speaker location shares the same 6x9 inch full-range specification consistently across the 2005, 2006, and 2007 model years, indicating dimensional uniformity in the rear mounting location across that production span.