BMW 750Li xDrive Center Dash Speaker Size
The BMW 750Li xDrive center dash accommodates 1 inch speaker size and 4 inch speakers. Compatible types for the location include tweeters and midrange units. The specifications cover the 2010 to 2015 model years.
| 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 |
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 center dash location in the BMW 750Li xDrive sits along the vehicle's horizontal symmetry axis, positioning speakers to deliver sound equidistant between the driver and front passenger.
- A center dash installation typically occupies a shallow, constrained cavity within the dashboard structure, which limits the depth and diameter of compatible speaker components.
- The 1-inch tweeter size accommodates the shallow mounting depth characteristic of center dash cavities while keeping the high-frequency dispersion point at ear level for front occupants.
- Tweeters reproduce high frequencies, generally in the range above 2,000 Hz, and a 1-inch dome or cone tweeter at the center dash position delivers treble content - such as vocal sibilance and upper harmonics - from a central stage between the two front seats.
- The 4-inch midrange driver fits within the spatial constraints of the center dash while providing a cone surface area sufficient to reproduce the critical midband frequencies where human speech and instrumental fundamentals are concentrated.
- Midrange drivers cover the frequency band roughly between 300 Hz and 5,000 Hz, and placement at the center dash allows vocals and midband content to appear anchored to the front-center of the soundstage rather than pulling toward either side of the cabin.
- The pairing of a 1-inch tweeter and a 4-inch midrange at a single location indicates a multi-driver center dash configuration in the BMW 750Li xDrive, where each driver handles a discrete portion of the audible spectrum.
- Because the center dash is a fixed, symmetrical mounting point, the 4-inch midrange radiates toward both front occupants at a nearly equal angle, reducing localization artifacts that can arise from off-axis speaker positions.
- A 1-inch tweeter produces a relatively narrow dispersion pattern at the highest frequencies, and the center dash placement allows high-frequency energy to project along the cabin's longitudinal axis toward the rear seating area as well.
- The consistent specification of both the 1-inch and 4-inch sizes across the 2010 through 2015 model years indicates dimensional uniformity in the center dash mounting location across that production span.