Mercedes-Benz R350 Rear Door Panel Speaker Size
The Mercedes-Benz R350 rear door panel accommodates a 6.5 inch speaker size and 1 inch speakers across the model's production span. Compatible speaker types for these locations include midbass, full-range, and tweeter units. These specifications cover the 2006 to 2012 model years.
| Year | Type | Size (inch) |
|---|---|---|
| 2012 | Midbass / Full-Range | 6.5 |
| 2011 | Midbass / Full-Range | 6.5 |
| 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 |
| 2007 | Midbass / Full-Range | 6.5 |
| 2007 | Tweeter | 1 |
| 2006 | Tweeter | 1 |
| 2006 | 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. |
| 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 R350 accommodates speaker installations within the door's interior trim cavity, a position that places drivers at a lateral and slightly elevated angle relative to rear-seat passengers.
- Door panel mounting positions the speaker baffle perpendicular to the vehicle's cabin width, directing acoustic output inward toward the seating area rather than forward or rearward along the cabin axis.
- The 6.5 inch diameter size occupies a cone surface area suited to moving the air volume necessary for reproducing lower midrange and upper bass frequencies, roughly spanning 80 Hz to 5 kHz depending on driver design.
- In a rear door panel location, a 6.5 inch driver operating as a midbass unit handles the frequency range that carries vocal fundamentals and instrument body tones, which are acoustically significant for rear-seat listening zones.
- When a 6.5 inch driver operates in full-range mode, a single driver in the Mercedes-Benz R350 rear door panel is responsible for reproducing all audible frequencies assigned to that channel without a supplemental tweeter.
- The 1 inch tweeter size is associated with high-frequency reproduction, generally covering content above approximately 2 kHz to 3 kHz, where wavelengths are short enough that a small diaphragm can move with the precision and speed required for accurate treble response.
- A 1 inch tweeter installed in the rear door panel of the R350 operates at frequencies where sound dispersion becomes increasingly directional, meaning placement angle and height within the door panel surface influence how high-frequency content reaches rear passengers.
- The midbass type designation indicates a driver crossed over from full-range operation and paired with a separate high-frequency driver, dividing the frequency workload between the 6.5 inch woofer cone and the 1 inch tweeter.
- Specifications for the 2008, 2007, 2009, and 2010 model years each list both a 6.5 inch and a 1 inch position in the rear door panel, indicating a 2-way speaker configuration at that location for those years.
- The 2011 and 2012 model years list only a 6.5 inch position compatible with midbass or full-range types, while the presence or absence of a separate tweeter cutout is reflected in the single-size entry for those years.
- Door panel cavities constrain enclosure depth and baffle thickness, and a 6.5 inch driver's mounting depth must be compatible with the door's internal clearance between the panel surface and the door's inner metal structure.
- The rear door panel placement positions the 1 inch tweeter in proximity to the 6.5 inch woofer, and the physical separation between the two drivers in a 2-way configuration affects the phase coherence of the crossover region where both drivers share output responsibility.