The Pontiac G3 rear location accommodates a 4x6 inch speaker size. Full-range units represent the compatible type available for audio system use. These specifications apply to the 2010 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 2010 Pontiac G3 accommodates a 4x6 inch opening, an oval form factor that fits within the constrained panel depth typical of rear deck or door installations in compact vehicles.
A 4x6 inch speaker occupies less surface area than round mid-range formats, which affects cone excursion capacity and limits how much low-frequency pressure the driver can generate in the rear position.
The oval geometry of a 4x6 inch driver distributes cone surface across a wider horizontal axis, a characteristic that suits shallow mounting cavities where a deeper circular basket would not clear the interior panel structure.
Full-range speakers are single-driver units designed to reproduce the entire audible frequency spectrum from a single cone, typically covering from around 80 Hz up to 20 kHz without a passive crossover network splitting the signal.
In a rear installation, a full-range driver handles both midrange vocal frequencies and upper treble detail, since no separate tweeter or woofer is mounted alongside to divide that workload.
The 4x6 inch full-range driver specified for the rear of the 2010 Pontiac G3 relies on its cone material and surround compliance to manage frequency extremes that a component system would otherwise assign to dedicated drivers.
At the 4x6 inch size, rear-positioned full-range drivers tend to roll off more steeply below 100 Hz compared to larger formats, reflecting the physical limits of the cone area relative to the wavelengths of bass frequencies.
Full-range drivers at the 4x6 inch dimension are mechanically suited to rear locations where available depth and baffle area restrict the use of multi-driver systems or larger woofer formats.