Mercedes-Benz R320 Rear Door Panel Speaker Size
The Mercedes-Benz R320 rear door panel accommodates a 6.5 inch speaker size and 1 inch speakers. Compatible types for the location include midbass, full-range, and tweeter units. The specifications cover the 2007 to 2009 model years.
| Year | Type | Size (inch) |
|---|---|---|
| 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 |
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 of the Mercedes-Benz R320 accommodates 2 distinct speaker sizes simultaneously, indicating a multi-driver configuration within the same door panel across all 3 model years listed.
- A 6.5 inch driver mounted in the rear door panel operates at a size where cone surface area is sufficient to move enough air for lower-midrange and midbass frequencies, typically covering the 80 Hz to 500 Hz range in a door-mounted position.
- Door panel cavities used for 6.5 inch drivers create a partially enclosed rear-air space behind the cone, which affects bass loading and low-frequency extension depending on door cavity volume and sealing.
- The midbass type designation for the 6.5 inch position means the driver is optimized for handling the lower portion of the midrange spectrum, where male vocals, bass guitar fundamentals, and kick drum body are concentrated.
- Full-range compatibility listed for the 6.5 inch position means a single driver of sufficient bandwidth can cover both midrange and upper-bass frequencies without requiring a separate tweeter, though the rear door panel location also supports a dedicated 1 inch tweeter.
- A 1 inch tweeter in the rear door panel handles high-frequency reproduction, generally from around 2,000 Hz to 20,000 Hz, where wavelengths are short enough that driver placement affects the perceived spatial distribution of treble energy in the cabin.
- The rear door panel position for a 1 inch tweeter places high-frequency dispersion toward the rear seating area of the Mercedes-Benz R320, a vehicle classified as a multi-row passenger wagon where rear occupant audio coverage is a spatial consideration.
- Tweeter types operate with very low excursion due to the short wavelengths involved, making the 1 inch diameter mechanically appropriate for the small diaphragm travel required at high frequencies.
- The coexistence of a 6.5 inch midbass/full-range driver and a 1 inch tweeter in the same rear door panel indicates the mounting locations are physically separate within the panel, each sized to its respective driver diameter.
- Across the 2007, 2008, and 2009 model years, the rear door panel speaker configuration remains consistent at both size positions, reflecting no change in the door panel's spatial or mounting dimensions during that production span.