Infiniti G37 Rear Deck Lid Speaker Size
The Infiniti G37 rear deck lid accommodates a 6x9 inch speaker size and 5.25 inch speakers across the model range. Compatible audio types for the location include full-range units and midbass system components. The specifications cover the 2008 to 2013 model years.
| Year | Type | Size (inch) |
|---|---|---|
| 2013 | Full-Range | 6x9 |
| 2013 | Midbass / Full-Range | 5.25 |
| 2012 | Full-Range | 6x9 |
| 2012 | Midbass / Full-Range | 5.25 |
| 2011 | Full-Range | 6x9 |
| 2011 | Midbass / Full-Range | 5.25 |
| 2010 | Full-Range | 6x9 |
| 2010 | Midbass / Full-Range | 5.25 |
| 2009 | Full-Range | 6x9 |
| 2009 | Midbass / Full-Range | 5.25 |
| 2008 | 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 deck lid is a horizontal surface positioned at the base of the rear window, placing speakers in a rearward and upward-facing orientation relative to the cabin.
- Mounting on the rear deck lid means speakers project sound toward the headliner and rear window, which can create reflected sound paths before audio reaches front passengers.
- The 6x9 inch oval format has a larger surface area than a round speaker of comparable diameter, which allows for greater cone excursion and stronger low-frequency output within the rear deck lid's flat, rigid mounting surface.
- A 6x9 inch speaker in a rear deck lid position is acoustically suited to reinforcing bass and lower midrange frequencies, as the rear deck often acts as a passive resonant enclosure above the trunk cavity.
- The full-range type listed for the 6x9 inch size indicates a speaker capable of reproducing a wide frequency spectrum, typically from around 50 Hz up to 20 kHz, often through a woofer cone combined with a small integrated tweeter or whizzer cone.
- The 5.25 inch round speaker has a smaller cone area than the 6x9 inch, which limits its low-frequency extension but allows for tighter control of midrange frequencies, generally between 80 Hz and 5 kHz, in the rear deck lid position.
- The Infiniti G37 rear deck lid accommodates both a 6x9 inch and a 5.25 inch speaker simultaneously across the 2009-2013 model years, indicating the location contains 2 distinct mounting positions with different cutout dimensions.
- The midbass type listed for the 5.25 inch size is a speaker optimized for the frequency band roughly between 80 Hz and 500 Hz, reinforcing punch and lower midrange weight without attempting to reproduce high frequencies.
- A 5.25 inch full-range speaker at the rear deck lid position handles a broader spectrum than a midbass-only unit but with less low-end authority than the larger 6x9 inch counterpart due to the smaller cone displacement.
- The rear deck lid's proximity to the trunk enclosure can influence bass response, as acoustic coupling between the trunk volume and the speaker's rear wave affects the effective low-frequency output of both mounted sizes.