Infiniti Q70 Rear Door Panel Speaker Size
The Infiniti Q70 rear door panel accommodates a 6.5 inch speaker size and 6x9 inch speakers, reflecting the unique sizes found across the model's production range. Compatible types for the location include midbass and full-range units. These specifications cover the 2014 to 2017 model years.
| Year | Type | Size (inch) |
|---|---|---|
| 2017 | Midbass / Full-Range | 6.5 |
| 2016 | Midbass / Full-Range | 6.5 |
| 2015 | Full-Range | 6x9 |
| 2014 | Full-Range | 6x9 |
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 Q70 positions speakers within an enclosed door cavity, where the speaker's rear wave is absorbed or reflected by the internal door structure rather than radiating freely.
- A 6.5-inch driver in the rear door panel of the 2016 and 2017 Infiniti Q70 occupies a smaller surface area than the 6x9-inch configuration, resulting in a reduced cone area that generally favors upper-bass and midrange frequency reproduction over deep low-frequency extension.
- The 6x9-inch driver found in the 2014 and 2015 rear door positions presents a larger cone area than a round 6.5-inch driver, which corresponds to greater air displacement and stronger low-frequency output capacity from the same door cavity location.
- Midbass drivers are designed to handle the frequency band approximately between 80 Hz and 500 Hz, prioritizing low-frequency punch and body over the extended treble response that full-range drivers cover.
- Full-range drivers are designed to reproduce a wide frequency band from bass through treble within a single cone, making the driver solely responsible for the complete audio spectrum at the rear door panel position.
- The 6x9-inch oval format listed for the 2014 and 2015 Infiniti Q70 rear door panel is exclusively compatible with full-range types, indicating the mounting cutout at that location accommodates only an oval driver profile during those years.
- The 6.5-inch round format for 2016 and 2017 is compatible with both midbass and full-range types, meaning the rear door panel mounting point in those model years accommodates drivers with different functional frequency roles within the same physical footprint.
- In a rear door panel installation, the door skin and window glass form boundaries that influence bass frequency buildup, which directly affects how a midbass driver's output in the 80-500 Hz range is perceived in the cabin.
- The rear door panel position places the speaker at approximately seat-height for rear passengers, which affects the directional dispersion angle of any full-range driver's high-frequency content relative to front-seat listening positions.
- A 6x9-inch driver requires an oval cutout with a longer axis of approximately 9 inches and a shorter axis of approximately 6 inches, meaning the door panel substrate and internal door reinforcements must accommodate a non-circular opening at that location.