Ford Probe Rear Side Panel Speaker Size
The Ford Probe rear side panel accommodates a 6x8 inch speaker size, as well as 4x6 inch and 6.75 inch speakers across various model years. Compatible audio types for these units include full-range and midbass system configurations. These specifications cover the 1990 to 1997 model year range.
| Year | Type | Size (inch) |
|---|---|---|
| 1997 | Full-Range | 6x8 |
| 1996 | Full-Range | 6x8 |
| 1995 | Full-Range | 6x8 |
| 1994 | Full-Range | 6x8 |
| 1993 | Full-Range | 6x8 |
| 1992 | Full-Range | 4x6 |
| 1992 | Midbass / Full-Range | 6.75 |
| 1991 | Full-Range | 4x6 |
| 1991 | Midbass / Full-Range | 6.5 |
| 1990 | Full-Range | 4x6 |
| 1990 | Midbass / Full-Range | 6.75 |
Speaker Types
| Type | Description |
|---|---|
| Midbass | A driver tuned for upper bass and lower midrange, roughly from 80 Hz to 500 Hz. It has longer cone travel than a full-range unit, which supports stronger bass in doors and panels. |
| Full-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 side panel location in the Ford Probe sits within the interior side structure behind the rear seating area, a position that places speakers along the lateral walls of the cabin rather than in a flat horizontal surface.
- Side panel mounting typically orients speaker cones toward the cabin interior at an angle, which affects stereo imaging and how sound disperses across the listening environment inside the vehicle.
- The 6x8 inch oval format specified for 1993 through 1997 models uses an elongated cone surface to approximate the radiating area of a larger round driver while fitting within a constrained vertical or angled panel cutout.
- The larger radiating surface of a 6x8 inch driver supports lower-frequency reproduction compared to smaller formats, making full-range coverage from bass through treble more practical from a single driver at the rear side panel position.
- The 4x6 inch oval format specified for 1990, 1991, and 1992 models has a smaller cone area than the 6x8 inch, which reduces low-frequency output capability and shifts the driver's most efficient operating range toward the midrange and upper frequencies.
- In the rear side panel location, a 4x6 inch full-range driver produces a sound field that is comparatively lighter in bass weight relative to larger formats occupying the same position.
- The 6.75 inch round driver listed as an alternative for 1990 and 1992 models represents a near-equivalent cone area to the 6x8 inch oval, suitable for the same rear side panel opening when an adapter or alternate mounting configuration accommodates the round format.
- The 6.5 inch round driver listed as an alternative for 1991 models is a standard mid-woofer diameter whose cone area falls between the 4x6 inch and 6.75 inch options present in the specifications, covering a broad midrange and upper bass range from the side panel position.
- Both 6.5 inch and 6.75 inch round drivers carry midbass as a compatible type, indicating the Ford Probe rear side panel cavity for those model years is dimensionally capable of supporting a driver focused on upper bass and lower midrange frequencies rather than only full-range reproduction.
- A midbass driver used at the rear side panel position reinforces the lower-midrange and bass frequencies within the cabin without requiring the driver to reproduce high-frequency content, which is typically handled by a separate tweeter mounted elsewhere.
- Full-range drivers listed across all model years are designed to reproduce the entire audible spectrum from a single driver, making them directly operable at the rear side panel location without a supplementary high-frequency driver.
- The coexistence of 4x6 inch and round driver options for 1990, 1991, and 1992 models indicates the rear side panel opening in the Ford Probe for those years accepted more than one mounting configuration or cutout dimension.