Pontiac Bonneville Rear Door Panel Speaker Size
The Pontiac Bonneville 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 audio system units. These specifications cover the years 2000 to 2005.
| Year | Type | Size (inch) |
|---|---|---|
| 2005 | Midbass / Full-Range | 5.25 |
| 2004 | Midbass / Full-Range | 5.25 |
| 2003 | Midbass / Full-Range | 5.25 |
| 2002 | Midbass / Full-Range | 5.25 |
| 2001 | Midbass / Full-Range | 5.25 |
| 2000 | 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 Pontiac Bonneville rear door panel accommodates a 5.25 inch speaker across the 2000 through 2005 model years.
- A 5.25 inch driver occupies a mid-sized cone diameter, producing meaningful output in the upper bass and midrange frequencies, roughly from 80 Hz to several kilohertz depending on crossover configuration.
- The rear door panel location places the speaker low in the cabin and behind the primary listening position, which affects the directional arrival of sound relative to seated occupants.
- Door panel mounting typically involves a shallow cavity with limited depth clearance, making mounting depth a relevant physical constraint for speaker selection at this location.
- The Pontiac Bonneville rear door panel speaker opening accepts a 5.25 inch frame diameter, which determines the maximum basket size a replacement driver can present without modification.
- A midbass speaker type at the rear door panel location is intended to reinforce low-to-mid frequencies, generally crossing over below the presence region and supporting the lower end of the vocal range and bass harmonics.
- Full-range speakers cover a wider frequency band from a single driver, handling bass, midrange, and limited high-frequency content without requiring additional crossover components at the installation point.
- The rear door panel position, being recessed within door trim, can introduce baffle diffraction and internal door cavity resonance that influence how a 5.25 inch driver reproduces the lower portion of its operating range.
- At a rear door panel location, a midbass driver typically functions as part of a multi-speaker system, receiving a band-limited signal rather than the full audio spectrum.
- The 5.25 inch cone area is sufficient for moderate low-frequency excursion, which is relevant in a door panel context where the driver may be called upon to reinforce bass energy in the rear of the passenger cabin.