BMW 750Li Rear Deck Lid Speaker Size
The BMW 750Li rear deck lid accommodates 4 inch speakers and a 1 inch speaker size, as well as 0.75 inch units. Compatible audio types for the location include tweeters and midrange units. The specifications cover the 2006 to 2015 model range.
| Year | Type | Size (inch) |
|---|---|---|
| 2015 | Tweeter | 1 |
| 2015 | Midrange | 4 |
| 2014 | Tweeter | 1 |
| 2014 | Midrange | 4 |
| 2013 | Tweeter | 1 |
| 2013 | Midrange | 4 |
| 2012 | Tweeter | 1 |
| 2012 | Midrange | 4 |
| 2011 | Tweeter | 1 |
| 2011 | Midrange | 4 |
| 2010 | Tweeter | 1 |
| 2010 | Midrange | 4 |
| 2009 | Tweeter | 1 |
| 2009 | Midrange | 4 |
| 2008 | Tweeter | 0.75 |
| 2008 | Midrange | 4 |
| 2007 | Tweeter | 0.75 |
| 2007 | Midrange | 4 |
| 2006 | Tweeter | 0.75 |
| 2006 | Midrange | 4 |
Speaker Types
| Type | Description |
|---|---|
| Tweeter | A small driver built for high frequencies, typically from about 2,000 Hz to 20,000 Hz. It adds treble detail and clarity and is usually mounted near ear level or aimed at the listener. |
| 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. |
Additional Notes
- The rear deck lid of the BMW 750Li is a surface-mounted location positioned at the rear of the passenger cabin, behind the rear seating area, where speakers radiate sound forward into the cabin interior.
- A deck lid location places drivers within a relatively shallow, panel-integrated mounting environment, where available depth and baffle area directly constrain the physical size of compatible drivers.
- The 4 inch midrange drivers specified for all model years across the BMW 750Li rear deck lid operate in the vocal and instrumental frequency band, generally covering the range from approximately 300 Hz to 5,000 Hz.
- At 4 inches, a midrange driver in a deck lid position is sized to handle the core presence frequencies of audio reproduction while remaining compatible with the spatial constraints of a panel-flush installation behind the rear passenger seats.
- Midrange drivers at 4 inches do not extend deeply into bass frequencies, making the rear deck lid a location dedicated to mid and upper-frequency reproduction rather than low-frequency output.
- A 1 inch tweeter handles high-frequency reproduction, typically from around 2,000 Hz to 20,000 Hz, with the small diaphragm area allowing precise dispersion of treble content such as cymbal transients, vocal air, and upper harmonic detail.
- The 1 inch tweeter size specified for model years 2009 through 2015 represents a slightly larger tweeter diaphragm than the 0.75 inch size, which can influence the lower crossover point the tweeter is capable of handling without distortion.
- The BMW 750Li rear deck lid accommodates 0.75 inch tweeters for the 2006, 2007, and 2008 model years, a smaller diaphragm format that is typically crossed over at a higher frequency point and suited to extreme upper-register reproduction.
- The transition from 0.75 inch to 1 inch tweeter sizing between the 2008 and 2009 BMW 750Li rear deck lid represents a dimensional change that affects mounting cutout diameter and, in turn, physical interchangeability between those model year groups.
- Mounting a tweeter and a midrange within the same rear deck lid location positions both drivers at approximately the same physical plane, which influences the spatial imaging characteristics perceived by rear-seat passengers.
- The consistent use of a 4 inch midrange across all model years in the BMW 750Li rear deck lid indicates a stable mounting aperture dimension for the midrange position throughout the full model range covered by the specifications.
- A tweeter placed in a deck lid installation, close to the rear window, radiates high-frequency content rearward and upward relative to rear-seat passengers, with glass reflections potentially influencing the perceived high-frequency dispersion pattern inside the cabin.