BMW X4 Center Dash Speaker Size
The BMW X4 center dash accommodates a 1 inch speaker size and 4 inch speakers. Compatible types for the location include tweeters and midrange units. These specifications cover the 2015 to 2018 model years.
| Year | Type | Size (inch) |
|---|---|---|
| 2018 | Tweeter | 1 |
| 2018 | Midrange | 4 |
| 2017 | Tweeter | 1 |
| 2017 | Midrange | 4 |
| 2016 | Tweeter | 1 |
| 2016 | Midrange | 4 |
| 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 BMW X4 center dash location accommodates 2 distinct speaker sizes across all listed model years: 1 inch and 4 inch.
- The center dash position sits along the vehicle's longitudinal axis, placing speakers equidistant from the left and right listening positions, which is a geometrically symmetrical mounting point relative to front-seat occupants.
- A 1-inch tweeter in the center dash handles high-frequency reproduction, typically covering the range above 2,000 Hz, where directional perception is strongest and the central placement helps anchor high-frequency stereo imaging toward the front of the cabin.
- The 4-inch midrange driver in the BMW X4 center dash reproduces the midband frequencies, generally spanning roughly 300 Hz to 5,000 Hz, a range that includes the fundamental tones and harmonics most critical to vocal and instrument clarity.
- A 4-inch cone driver has a relatively compact radiating surface, which suits the constrained physical depth and width typical of a center dash cavity and limits low-frequency extension in favor of midrange accuracy.
- The dash surface is a reflective, angled plane that can introduce early reflections; a 1-inch tweeter's small diaphragm maintains wider high-frequency dispersion at short distances compared to larger dome or cone tweeters.
- Center dash placement means both the tweeter and midrange driver fire upward or rearward toward the windshield, and the glass surface of the windshield acts as an acoustic reflector that redirects sound toward the cabin occupants.
- The coexistence of a 1-inch tweeter and a 4-inch midrange at the same location indicates a multidriver center channel arrangement where the frequency workload is divided between the 2 drivers rather than handled by a single full-range unit.