Mercedes-Benz S420 Rear Deck Lid Speaker Size
The Mercedes-Benz S420 rear deck lid accommodates a 6.5 inch speaker size across all listed model years. Compatible types for the audio system include midbass and full-range replacement units. These specifications cover the 1994 to 1997 model year chart range.
| Year | Type | Size (inch) |
|---|---|---|
| 1997 | Midbass / Full-Range | 6.5 |
| 1996 | Midbass / Full-Range | 6.5 |
| 1995 | Midbass / Full-Range | 6.5 |
| 1994 | Midbass / Full-Range | 6.5 |
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 rear deck lid of the Mercedes-Benz S420 is a surface-mounted location positioned at the rearmost horizontal panel of the cabin, situated between the passenger compartment and the trunk.
- Deck lid installations are typically flush or near-flush with the rear shelf surface, orienting the speaker cone upward or at a slight angle toward the passenger cabin.
- The 6.5 inch diameter driver fits a mounting cutout and depth cavity consistent with mid-sized door and deck panel openings found in full-size luxury sedans of the mid-1990s.
- A 6.5 inch cone surface area produces sufficient low-midrange output to handle frequencies from roughly 80 Hz up through the midrange, making the driver acoustically suited for a rear deck position that naturally reinforces bass through the cabin's rear pressure zone.
- The midbass type is designed to reproduce the lower portion of the midrange and upper bass frequencies, generally from approximately 80 Hz to 500 Hz, with a cone mass and surround tuned for that bandwidth rather than high-frequency extension.
- A midbass driver in the rear deck lid position of the S420 operates in a partially enclosed or semi-infinite baffle environment depending on trunk seal, which affects the low-frequency loading and resonance behavior of the driver.
- The full-range type covers a wider frequency band than a dedicated midbass, typically from around 80 Hz to 20 kHz, achieved through a lighter cone and a dust cap or whizzer cone that extends treble response.
- A full-range driver in the 6.5 inch format at the rear deck lid position allows the location to serve as a standalone playback point without requiring a separate tweeter at the same installation site.
- The rear deck lid mounting location places the speakers at a greater distance from front-seat listeners than door or pillar positions, a spatial relationship that affects stereo imaging and time alignment in multi-speaker systems.
- The S420 rear deck lid mounting depth tolerance is a critical dimension for 6.5 inch driver selection, as the trunk structure beneath the deck panel limits how far a speaker basket can extend below the mounting surface.