Infiniti G35 Rear Door Panel Speaker Size
The Infiniti G35 rear door panel accommodates 4 inch units, a 6.5 inch speaker size, and 6.75 inch speakers across various model years. Compatible types for these locations include midrange, midbass, and full-range audio system components. The specifications cover the 2003 to 2007 range of model years.
| Year | Type | Size (inch) |
|---|---|---|
| 2007 | Midrange | 4 |
| 2006 | Midbass / Full-Range | 6.5 |
| 2006 | Midrange | 4 |
| 2005 | Midbass / Full-Range | 6.5 |
| 2004 | Midbass / Full-Range | 6.75 |
| 2004 | Midbass / Full-Range | 6.5 |
| 2003 | Midbass / Full-Range | 6.75 |
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 rear door panel is a flush-mounted location recessed within the interior door trim, typically secured by the panel's structural frame and oriented to project sound into the cabin's rear passenger zone.
- Door panel speaker cutouts are generally constrained by the door's internal cavity depth and the surrounding trim structure, which limits the mounting depth available for speaker baskets and magnet assemblies.
- A 4-inch driver in the rear door panel occupies a relatively compact mounting footprint, and its small cone area limits low-frequency output, making midrange the acoustically appropriate designation for the frequency band - generally covering approximately 500 Hz to 5 kHz - where vocal clarity and upper-instrument detail are concentrated.
- The Infiniti G35 rear door panel lists the 4-inch size as compatible exclusively with midrange type, confirming the driver's role is limited to the mid-frequency band rather than extended low-frequency reproduction.
- A 6.5-inch driver carries a larger cone area than a 4-inch unit, which allows greater air displacement and extends usable low-frequency response down into the midbass region, typically covering approximately 80 Hz to 500 Hz, while also retaining sufficient range to operate as a full-range driver.
- The midbass and full-range type designations listed for the 6.5-inch size reflect two distinct usage contexts: midbass operation within a multi-component system, or full-range operation covering the entire audible spectrum in a simpler installation.
- A 6.75-inch driver shares the same type designations - midbass and full-range - as the 6.5-inch size, and the slightly larger cone diameter allows marginally greater low-end displacement, reinforcing the driver's suitability for the same midbass and full-range roles in the rear door panel location.
- The rear door panel placement positions the speaker low in the vehicle cabin and angled toward the rear seating area, which affects the spatial imaging and the directional projection of midrange frequencies toward rear passengers.
- The specifications for the 2004 model year list both 6.75-inch and 6.5-inch sizes as rear door panel options, indicating the presence of more than 1 possible factory cutout configuration for that year.
- The 2006 model year similarly lists 2 distinct sizes - 6.5-inch and 4-inch - for the rear door panel, suggesting the door panel may accommodate multiple speaker positions or alternative factory configurations within the same year.