Infiniti M56 Rear Door Panel Speaker Size
The Infiniti M56 rear door panel accommodates a 6.5 inch speaker size across all listed model years. Compatible types for the location include midbass and full-range speakers. The specifications cover a range of years from 2011 to 2013.
| Year | Type | Size (inch) |
|---|---|---|
| 2013 | Midbass / Full-Range | 6.5 |
| 2012 | Midbass / Full-Range | 6.5 |
| 2011 | 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 door panel location in the Infiniti M56 accommodates speakers mounted within the door structure, where the panel surface and internal door cavity together define the available depth, baffle area, and overall spatial envelope for the driver.
- Door panel installations position speakers at a relatively low height within the cabin, angled toward the passenger compartment, which influences the projection path and the degree to which higher frequencies disperse before reaching seated occupants.
- A 6.5-inch driver carries a cone surface area large enough to move sufficient air for reproducing lower midrange and upper bass frequencies effectively, making the rear door panel a mechanically appropriate location for a driver of that diameter.
- The 6.5-inch diameter also determines the minimum cutout size and mounting depth required in the door panel, both of which must be accommodated by the existing door structure and any aftermarket mounting hardware used.
- In a rear door panel location, the enclosure formed by the door cavity behind the speaker cone acts as an informal sealed or partially open chamber, and the acoustic behavior of a 6.5-inch driver is influenced by the volume and seal quality of that cavity.
- The Infiniti M56 rear door panel's compatibility with midbass drivers means the location supports speakers optimized to reproduce the frequency range roughly between 80 Hz and 500 Hz, a range that contributes the punch and body of bass-forward musical content.
- Midbass drivers are typically designed with stiffer suspensions and greater excursion control than full-range alternatives, attributes suited to handling the mechanical demands of low-midrange reproduction within a door-mounted position.
- Full-range drivers listed as compatible for the Infiniti M56 rear door panel are built to reproduce a wider frequency span, often from below 100 Hz up through several kilohertz, within a single cone-and-surround assembly.
- When a full-range driver is used in the rear door panel position, the driver must manage both the low-frequency output typical of a door woofer and the midrange detail that would otherwise be handled by a dedicated midrange speaker elsewhere in the system.
- The rear door panel placement subjects any installed driver to vibrations transmitted through the door skin from road and wind noise, which can affect the signal-to-noise performance of a full-range driver more noticeably than a midbass driver due to the full-range unit's sensitivity across a broader frequency band.