Subaru Justy Rear Door Panel Speaker Size
The Subaru Justy rear door panel accommodates a 5.25 inch speaker size across all listed model years. Compatible speaker types for the location include midbass and full-range units. These specifications cover the years 1987 to 1994.
| Year | Type | Size (inch) |
|---|---|---|
| 1994 | Midbass / Full-Range | 5.25 |
| 1993 | Midbass / Full-Range | 5.25 |
| 1992 | Midbass / Full-Range | 5.25 |
| 1991 | Midbass / Full-Range | 5.25 |
| 1990 | Midbass / Full-Range | 5.25 |
| 1989 | Midbass / Full-Range | 5.25 |
| 1988 | Midbass / Full-Range | 5.25 |
| 1987 | Midbass / Full-Range | 5.25 |
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 door panel location in the Subaru Justy positions speakers within the lower portion of the cabin's side walls, placing the driver cone closer to floor level than to ear level.
- Door panel mounting subjects speakers to mechanical vibration from the door structure itself, as well as potential moisture ingress from window seals and exterior exposure.
- The 5.25 inch driver diameter fits within the spatial constraints of the Subaru Justy's rear door panel cavity across all listed model years from 1987 through 1994.
- A 5.25 inch cone provides enough surface area to move air efficiently in the upper bass and midrange frequencies, roughly covering 80 Hz to 5 kHz depending on driver design.
- Placement in the rear door panel means the 5.25 inch driver fires laterally into the cabin rather than toward the listening position directly, which affects stereo imaging and sound dispersion across the rear seating area.
- A midbass driver is a dedicated transducer optimized for the upper bass and lower midrange frequency band, typically between approximately 80 Hz and 500 Hz, and is not intended to reproduce high frequencies.
- In a rear door panel location, a midbass driver reinforces low-frequency body and warmth in the cabin, compensating for bass loss that occurs at floor-level listening distances.
- A full-range driver is designed to reproduce a wide frequency spectrum from bass through treble using a single cone, often incorporating a small whizzer cone to extend high-frequency response.
- When a full-range driver occupies the Subaru Justy rear door panel position, the lateral firing angle reduces the perceived treble clarity at seated ear height due to the directional nature of high-frequency sound waves.
- The Subaru Justy rear door panel's 5.25 inch mounting diameter establishes the maximum frame size a replacement driver can occupy without modification to the mounting surface.