Infiniti FX35 Rear Door Panel Speaker Size
The Infiniti FX35 rear door panel accommodates a 6.5 inch speaker size across all listed model years. Compatible types for the audio system include midbass and full-range units. The specifications cover a range from 2003 to 2012.
| Year | Type | Size (inch) |
|---|---|---|
| 2012 | Midbass / Full-Range | 6.5 |
| 2011 | Midbass / Full-Range | 6.5 |
| 2010 | Midbass / Full-Range | 6.5 |
| 2009 | Midbass / Full-Range | 6.5 |
| 2008 | Midbass / Full-Range | 6.5 |
| 2007 | Midbass / Full-Range | 6.5 |
| 2006 | Midbass / Full-Range | 6.5 |
| 2005 | Midbass / Full-Range | 6.5 |
| 2004 | Midbass / Full-Range | 6.5 |
| 2003 | 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 of the Infiniti FX35 is a mounting location positioned within the lower interior door structure, placing speakers at roughly seat-level height along the cabin's side walls.
- Door panel installations involve a baffle-like cavity behind the speaker, where the door's inner metalwork acts as an enclosure that influences low-frequency response and overall output character.
- The 6.5 inch diameter specified for the Infiniti FX35 rear door panel is a mid-size cone format that balances cone surface area with the spatial constraints typical of passenger door cavities.
- A 6.5 inch driver produces sufficient cone area to move the air volume needed for meaningful low-midrange and upper-bass reproduction, frequency ranges that benefit rear-door placement due to proximity to the lower cabin space.
- The rear door location positions the speaker toward the lower portion of the listening environment, which acoustically reinforces bass and lower-midrange energy while placing the driver off-axis from the primary listening position.
- A midbass driver is optimized for the frequency band roughly between 80 Hz and 500 Hz, concentrating excursion capability and motor design on reproducing punch, warmth, and body rather than extended high-frequency detail.
- In a rear door panel context, a midbass driver contributes low-end support and mid-frequency weight that reinforces the overall system's spatial fullness from behind the passenger seating position.
- A full-range driver is designed to reproduce a wider portion of the audible spectrum from bass through treble within a single cone, often incorporating a small whizzer cone or similar mechanism to extend high-frequency dispersion.
- When a full-range speaker is used in the Infiniti FX35 rear door panel location, the off-axis angle relative to seated occupants affects how high-frequency content is perceived, since directional dispersion narrows at higher frequencies.
- The consistent 6.5 inch specification across the listed model years indicates a fixed mounting cutout diameter and depth clearance within the rear door panel cavity throughout the production range covered.