Ford Explorer Sport Trac Below Rear Seat Speaker Size
The Ford Explorer Sport Trac below rear seat location accommodates an 8 inch speaker size across all listed model years. Compatible types for the position include subwoofer units. The specifications cover a range of years from 2002 to 2005.
| Year | Type | Size (inch) |
|---|---|---|
| 2005 | Subwoofer | 8 |
| 2004 | Subwoofer | 8 |
| 2003 | Subwoofer | 8 |
| 2002 | Subwoofer | 8 |
Speaker Types
| Type | Description |
|---|---|
| Subwoofer | A large driver for the lowest bass notes, typically from about 20 Hz to 120 Hz. It is usually installed in a separate enclosure and works alongside the other speakers. |
Additional Notes
- The below rear seat location in the Ford Explorer Sport Trac positions the speaker enclosure beneath the rear seating surface, a placement that typically situates the driver within a enclosed or semi-enclosed cavity formed by the seat structure and floor.
- A below-seat mounting location orients the speaker facing downward or forward into a confined space, which affects low-frequency wave propagation by using the floor and seat structure as boundary reinforcement surfaces.
- The 8-inch driver size specified for the below rear seat position is large enough to move the air volume necessary for reproducing low bass frequencies, typically ranging from approximately 20 Hz to 200 Hz depending on enclosure tuning.
- An 8-inch cone diameter produces a relatively wide radiating surface area compared to smaller drivers, which contributes to greater low-frequency output at lower excursion levels within the confined below-seat cavity.
- The Ford Explorer Sport Trac below rear seat location, compatible exclusively with a subwoofer, indicates the enclosure dimensions in 2002 through 2005 models are suited for a dedicated low-frequency driver rather than a full-range or midrange unit.
- A subwoofer is a speaker type engineered specifically to reproduce the lowest portion of the audible frequency spectrum, generally below 80 to 120 Hz, and is acoustically crossed over from higher frequencies using a low-pass filter.
- The subwoofer designation for the below rear seat position means the driver in the location functions as a non-directional bass source, since low-frequency wavelengths are long enough that human hearing cannot easily localize their origin point within a vehicle cabin.
- The sealed or ported enclosure formed by the below-seat cavity directly influences the resonance frequency and overall output efficiency of an 8-inch subwoofer installed in the location.
- Because low frequencies are omnidirectional in perception, the below rear seat placement does not create the localization artifacts that would affect a midrange or tweeter placed in the same position.