Mercedes-Benz GL550 Rear Door Panel Speaker Size
The Mercedes-Benz GL550 rear door panel accommodates a 6.5 inch speaker size and 1 inch speakers, with the location supporting both unique sizes across the model range. Compatible speaker types for these positions include midbass, full-range, and tweeter units. The specifications cover the 2008 to 2016 model years.
| Year | Type | Size (inch) |
|---|---|---|
| 2016 | Midbass / Full-Range | 6.5 |
| 2015 | Midbass / Full-Range | 6.5 |
| 2014 | Midbass / Full-Range | 6.5 |
| 2013 | Midbass / Full-Range | 6.5 |
| 2012 | Midbass / Full-Range | 6.5 |
| 2012 | Tweeter | 1 |
| 2011 | Midbass / Full-Range | 6.5 |
| 2011 | Tweeter | 1 |
| 2010 | Midbass / Full-Range | 6.5 |
| 2010 | Tweeter | 1 |
| 2009 | Midbass / Full-Range | 6.5 |
| 2009 | Tweeter | 1 |
| 2008 | Midbass / Full-Range | 6.5 |
| 2008 | Tweeter | 1 |
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. |
| 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 Mercedes-Benz GL550 positions speakers within the lower vertical surface of the rear passenger doors, placing drivers at roughly seat-level height and angling sound upward toward the cabin interior.
- Door panel installations are subject to spatial constraints from the door card structure, window regulator mechanisms, and vapor barriers, all of which affect the available mounting depth and baffle area behind the speaker.
- The 6.5 inch diameter is the sole driver size across all listed model years for the rear door panel, indicating a consistent cutout diameter and mounting ring pattern throughout the GL550's production range covered by the specifications.
- A 6.5 inch driver carries sufficient cone surface area to reproduce lower midrange and upper bass frequencies effectively, typically covering a range from approximately 60 Hz to 5 kHz, which suits the rear door panel's role in delivering body and warmth to the listening position.
- In a rear door location, a 6.5 inch driver benefits from the partial acoustic loading provided by the door cavity behind the baffle, which can reinforce low-frequency output without requiring a dedicated enclosure.
- The midbass designation for the 6.5 inch position indicates operation within roughly 80 Hz to 500 Hz, where the driver is crossed over from a subwoofer below and handed off to a midrange or tweeter above, preserving cone excursion and clarity at the rear door location.
- The full-range designation for the same 6.5 inch position indicates the driver is also compatible with configurations where no crossover network is employed, allowing the cone to reproduce the broadest possible frequency band from a single rear door mounting point.
- The 1 inch tweeter size appears in the rear door panel specifications for model years 2008 through 2012, indicating the presence of a separate high-frequency driver mounting location within the rear door panel assembly during those years.
- A 1 inch tweeter operates at high frequencies, typically from approximately 2 kHz to 20 kHz, where small diaphragm size and low mass allow for rapid transient response and controlled directional dispersion of treble content.
- Placement of a 1 inch tweeter within the rear door panel on the Mercedes-Benz GL550 positions the high-frequency source closer to ear level for rear seat occupants compared to an A-pillar or dashboard location, affecting the perceived stereo imaging for passengers in the rear seating positions.
- The pairing of a 6.5 inch midbass or full-range driver with a 1 inch tweeter within the same rear door panel reflects a 2-way speaker configuration at the rear door location, dividing the frequency spectrum between 2 drivers mounted within a single door.
- For model years 2013 through 2016, the specifications list only the 6.5 inch driver for the rear door panel, indicating a single-driver rear door configuration for those years without a separate tweeter mounting position in the same location.