BMW 740Ld xDrvie Center Dash Speaker Size
The BMW 740Ld xDrive center dash location accommodates both 1 inch speaker size and 4 inch speakers. Compatible types for these units include tweeter and midrange audio system components. These specifications apply to the 2015 model year.
| Year | Type | Size (inch) |
|---|---|---|
| 2015 | Tweeter | 1 |
| 2015 | 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 740Ld xDrive accommodates 2 distinct speaker sizes, each serving a separate frequency role within the same installation zone.
- A 1-inch driver mounted in the center dash operates as a tweeter, a size class associated with reproducing high-frequency content, generally from around 2,000 Hz up to 20,000 Hz or beyond.
- The center dash position places a tweeter at a relatively elevated and centrally focused point in the cabin, which supports the wide horizontal dispersion characteristic of small-diameter high-frequency drivers.
- A 4-inch driver in the center dash position fills the midrange role, covering the frequency band most associated with vocal intelligibility and the core presence of acoustic instruments, typically spanning roughly 300 Hz to 5,000 Hz.
- At 4 inches, the cone diameter is large enough to move sufficient air for midrange reproduction while remaining physically compatible with the shallow depth constraints typical of dashboard cavities.
- The BMW 740Ld xDrive center dash location supports both a tweeter and a midrange driver for the 2015 model year, indicating a multi-driver configuration within a single installation area.
- Tweeters at 1 inch in diameter have a small radiating surface, which contributes to their ability to reproduce short-wavelength, high-frequency sound waves with relatively controlled directional output.
- Midrange drivers at 4 inches are distinct from woofers in that the cone is optimized for pistonic motion across a mid-frequency band rather than the high-excursion, low-frequency movement associated with larger bass drivers.
- The center dash placement of a midrange driver positions the sound source near the acoustic center of the vehicle's front soundstage, which aligns with the frequency range most critical to perceived vocal and instrument localization.