Infiniti FX50 Rear Door Panel Speaker Size
The Infiniti FX50 rear door panel accommodates a 6.5 inch speaker size across all listed model years. Compatible speaker types for the location include midbass and full-range units. These specifications cover a range of years from 2009 to 2013.
| Year | Type | Size (inch) |
|---|---|---|
| 2013 | Midbass / Full-Range | 6.5 |
| 2012 | Midbass / Full-Range | 6.5 |
| 2011 | Midbass / Full-Range | 6.5 |
| 2010 | Midbass / Full-Range | 6.5 |
| 2009 | 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 Infiniti FX50 rear door panel speaker location accommodates a 6.5 inch driver across all listed model years from 2009 through 2013.
- A 6.5 inch speaker occupies a mid-sized cone area that produces meaningful low-midrange and upper-bass frequencies, typically covering a range from around 50 Hz to 5 kHz depending on driver design and crossover configuration.
- Door panel mounting positions speakers at a low height relative to seated occupants, which affects the directional arrival of sound and the perceived stereo imaging for rear passengers.
- The rear door panel location places the speaker within a sealed or semi-sealed cavity formed by the door's inner structure, which influences bass loading and low-frequency output efficiency.
- Midbass drivers are designed with stiffer cone materials and heavier voice coils to handle the mechanical excursion demands of low-frequency reproduction, prioritizing output in the 50 Hz to 500 Hz range over high-frequency extension.
- Full-range drivers in a 6.5 inch format are built to reproduce a wider frequency span from bass through upper midrange, using a lighter cone and sometimes a whizzer cone to extend treble response without a dedicated tweeter.
- In a rear door panel installation, a midbass driver typically functions as part of a multi-speaker system, receiving only lower frequencies via a passive or active crossover and reinforcing the low-end foundation of the audio system.
- A full-range driver in the rear door panel of the Infiniti FX50 can operate independently across multiple frequency bands, making solo operation without supplemental tweeters acoustically feasible at that location.
- The door panel enclosure depth and mounting baffle dimensions are relevant factors in determining whether a 6.5 inch driver with a particular mounting depth will physically fit without mechanical interference from window regulators or structural bracing inside the door.
- Rear door speakers in a vehicle like the FX50 contribute to the overall soundstage width and rear fill, with the door panel position distributing sound laterally toward both rear passengers.