Peugeot 405 Rear Deck Lid Speaker Size
The Peugeot 405 rear deck lid accommodates 5.25 inch speakers and a 6.5 inch speaker size, with each location supporting units across the model's production span. Compatible speaker types for all years include midbass and full-range units. These specifications cover the 1987 to 1997 model years.
| 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 |
| 1993 | Midbass / Full-Range | 6.5 |
| 1992 | Midbass / Full-Range | 6.5 |
| 1991 | Midbass / Full-Range | 5.25 |
| 1990 | Midbass / Full-Range | 5.25 |
| 1989 | Midbass / Full-Range | 5.25 |
| 1988 | Midbass / Full-Range | 5.25 |
| 1987 | Midbass / Full-Range | 5.25 |
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 Peugeot 405 is a horizontal surface positioned at the base of the rear window, above the trunk cavity, placing mounted speakers in a rearward-facing acoustic environment that projects sound toward the cabin through the back shelf.
- Deck lid installations typically involve shallow mounting depth constraints, as the panel sits over the trunk and must accommodate the structural thickness of the deck without interfering with underlying components.
- The 2 distinct speaker sizes specified across the model range - 6.5 inch and 5.25 inch - reflect different mounting cutout diameters, meaning the baffle opening and mounting hole dimensions differ between earlier and later production years.
- A 6.5 inch driver carries a larger cone surface area than a 5.25 inch driver, which translates to greater low-frequency displacement capability and stronger midbass output at the rear deck lid position.
- The 5.25 inch size, as specified for the Peugeot 405 rear deck lid in earlier model years, suits a physically tighter mounting footprint while still covering mid and upper bass frequencies adequate for a deck-mounted application.
- Midbass speakers are designed to handle the frequency band roughly between 80 Hz and 500 Hz, reinforcing the lower midrange and upper bass reproduction that a rear deck location is commonly expected to anchor in a vehicle audio system.
- Full-range speakers span a broader frequency band - typically from around 60 Hz up to 20 kHz - by incorporating a main cone alongside a smaller whizzer cone or tweeter element, allowing a single driver to reproduce bass, midrange, and treble from one mounting point.
- At the rear deck lid location, a full-range driver handles the complete audible spectrum without requiring additional crossover components or supplemental tweeters at the same mounting position.
- Both compatible types listed - midbass and full-range - share a passive or component-independent installation character, in that neither requires an active crossover network as a mandatory part of the installation at the deck lid opening.
- The horizontal orientation of a rear deck lid installation affects the dispersion angle of any mounted speaker, as the driver radiates upward and rearward rather than directly toward the listener, influencing how sound energy reaches the front seating positions.
- The transition from the 5.25 inch specification to the 6.5 inch specification at the Peugeot 405 rear deck lid indicates a change in the physical mounting cavity dimensions between the earlier and later production configurations of the vehicle.