Land Rover Discovery Rear Door Panel Speaker Size
The Land Rover Discovery rear door panel accommodates 1 inch speakers, 3.5 inch units, and a 6.5 inch speaker size across the model's audio system. Compatible types within the location include tweeters, midrange units, and midbass and full-range speakers. These specifications cover the range of 1999 to 2004.
| Year | Type | Size (inch) |
|---|---|---|
| 2004 | Midbass / Full-Range | 6.5 |
| 2004 | Tweeter | 1 |
| 2003 | Midbass / Full-Range | 6.5 |
| 2003 | Tweeter | 1 |
| 2002 | Tweeter | 1 |
| 2002 | Midrange | 3.5 |
| 2002 | Midbass / Full-Range | 6.5 |
| 2001 | Tweeter | 1 |
| 2001 | Midrange | 3.5 |
| 2001 | Midbass / Full-Range | 6.5 |
| 2000 | Tweeter | 1 |
| 2000 | Midrange | 3.5 |
| 2000 | Midbass / Full-Range | 6.5 |
| 1999 | Midrange | 3.5 |
| 1999 | Midbass / Full-Range | 6.5 |
Speaker Types
| Type | Description |
|---|---|
| Tweeter | A small driver built for high frequencies, typically from about 2,000 Hz to 20,000 Hz. It adds treble detail and clarity and is usually mounted near ear level or aimed at the listener. |
| Midrange | A driver for the middle of the audible range, typically from about 300 Hz to 5,000 Hz, where vocals and most instruments sit. It is often paired with a tweeter and a woofer. |
| 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 on the Land Rover Discovery positions speakers within the vertical surface of the interior door trim, where the speaker baffle faces inward toward the cabin occupants rather than upward or forward.
- Door panel installations are subject to road vibration transmitted through the door structure, which places mechanical stress on speaker cones, surrounds, and mounting hardware over time.
- The 6.5 inch size appears across all listed model years at the rear door panel location, indicating a consistent cutout diameter in the door panel across those years. At 6.5 inches, the cone surface area is sufficient to move enough air for effective bass and lower midrange reproduction.
- A 6.5 inch driver in a door panel operates within roughly 60 Hz to 5,000 Hz in a midbass role, or across a wider range in a full-range role, with the door cavity itself acting as an enclosure that influences low-frequency output and resonance behavior.
- Midbass operation for a 6.5 inch driver focuses energy in the lower-mid and upper-bass frequencies, where the rear door panel placement benefits from panel reinforcement and door cavity volume to support those frequencies.
- The 1 inch tweeter size is listed for model years 1999 through 2004 at the rear door panel. A 1 inch tweeter reproduces high frequencies, typically from around 2,000 Hz to 20,000 Hz or higher, with a small diaphragm that allows rapid pistonic movement at those frequencies.
- Tweeter placement within a door panel, rather than an A-pillar or dash, results in a lower vertical position relative to ear level, which affects the perceived stereo imaging and high-frequency directionality in the rear cabin area.
- High frequencies are highly directional, so a 1 inch tweeter mounted in the rear door panel radiates treble energy toward the nearest rear passenger rather than distributing it broadly across the cabin.
- The 3.5 inch midrange size is listed for the Land Rover Discovery rear door panel in model years 1999 through 2002. A 3.5 inch driver in a midrange role handles the critical vocal and instrument frequencies, typically from around 300 Hz to 5,000 Hz.
- A dedicated 3.5 inch midrange driver in a door panel handles frequencies that are central to speech intelligibility and tonal character, operating in a range where the human ear is most sensitive.
- In a 3-speaker configuration at the rear door panel, the 6.5 inch midbass, 3.5 inch midrange, and 1 inch tweeter each handle a distinct frequency band, which reduces intermodulation distortion compared to a single driver covering the full range.
- The rear door panel on the Land Rover Discovery presents a mounting surface with finite depth clearance behind the panel, meaning a speaker's mounting depth must be compatible with the available cavity between the trim panel and the inner door skin.