Infiniti G37 Rear Door Panel Speaker Size
The Infiniti G37 rear door panel accommodates a 6.5 inch speaker size and 3.5 inch speakers across all listed model years. Compatible audio types for these units include midbass, full-range, and midrange system classifications. The specifications cover a range of years from 2009 to 2013.
| Year | Type | Size (inch) |
|---|---|---|
| 2013 | Midbass / Full-Range | 6.5 |
| 2013 | Midrange | 3.5 |
| 2012 | Midbass / Full-Range | 6.5 |
| 2012 | Midrange | 3.5 |
| 2011 | Midbass / Full-Range | 6.5 |
| 2011 | Midrange | 3.5 |
| 2010 | Midbass / Full-Range | 6.5 |
| 2010 | Midrange | 3.5 |
| 2009 | Midbass / Full-Range | 6.5 |
| 2009 | Midrange | 3.5 |
Speaker Types
| Type | Description |
|---|---|
| Midrange | A driver for the middle of the audible range, typically from about 300 Hz to 5,000 Hz, where vocals and most instruments sit. It is often paired with a tweeter and a woofer. |
| 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 G37 rear door panel accommodates 2 distinct speaker sizes across the listed model years, indicating a multi-driver configuration within each door panel.
- A 6.5 inch driver mounted in a rear door panel operates within a cavity that is shaped and dampened by the door's internal structure, which affects low-frequency reinforcement and rear-fill contribution to the cabin.
- The 6.5 inch position in the Infiniti G37 rear door panel is compatible with midbass and full-range types, meaning the opening and mounting depth are sufficient to accommodate either a dedicated low-mid driver or a wider-bandwidth single-cone unit.
- Midbass drivers in a rear door location handle roughly 80 Hz to 500 Hz, reproducing the lower midrange and upper bass frequencies that contribute to body and warmth in the rear soundstage.
- A full-range driver in the 6.5 inch rear door position extends beyond the midbass range, covering frequencies from the low bass region up through the upper midrange, reducing the need for additional drivers at that location.
- The 3.5 inch position in the rear door panel is designated for midrange type speakers, which operate in a frequency band roughly between 500 Hz and 5,000 Hz, covering vocal presence and instrument definition.
- A 3.5 inch midrange driver in a door panel location benefits from relatively close proximity to passengers in the rear seating area, which supports clearer mid-frequency reproduction at that position.
- The small cone area of a 3.5 inch driver limits low-frequency excursion capability, making midrange the acoustically appropriate type for the G37 rear door panel's smaller opening.
- In a rear door panel, the 3.5 inch midrange and 6.5 inch midbass or full-range positions together cover a broad combined frequency range, with each driver handling a distinct portion of the audio spectrum.
- Door panel speaker locations are generally flush-mounted against the interior trim, meaning the speaker's depth and basket diameter must conform to the clearance between the trim panel and the door's inner metal structure.