BMW 440i Gran Coupe Center Dash Speaker Size
The BMW 440i Gran Coupe center dash location accommodates a 1 inch speaker size and 4 inch speakers across all listed model years. Compatible types for the 1 inch units include tweeters, while the 4 inch units support midrange audio system components. These specifications cover the 2017 to 2018 model year range.
| Year | Type | Size (inch) |
|---|---|---|
| 2018 | Tweeter | 1 |
| 2018 | Midrange | 4 |
| 2017 | Tweeter | 1 |
| 2017 | 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 440i Gran Coupe accommodates 2 distinct speaker sizes across the listed model years, with 1-inch and 4-inch drivers operating in the same mounting zone.
- Center dash positions are typically shallow-mount environments with limited rear cavity depth, which influences the physical profile requirements of any driver installed in the location.
- A 1-inch driver in the center dash position handles high-frequency reproduction, generally covering the range from approximately 2 kHz upward, where short wavelengths benefit from a centrally placed source for focused stereo imaging.
- Tweeters at the 1-inch diameter produce a relatively narrow dispersion pattern at high frequencies, and placement at the center dash allows high-frequency energy to project toward the listening area from a forward, elevated angle.
- The BMW 440i Gran Coupe center dash in both 2017 and 2018 model years lists the tweeter type as the sole compatible type for the 1-inch size, meaning no woofer or full-range designation applies at that diameter in this location.
- A 4-inch driver in the center dash position operates in the midrange frequency band, which typically spans from approximately 300 Hz to 5 kHz and covers critical vocal and instrumental frequencies.
- The midrange type listed for the 4-inch size in the center dash location is a dedicated band-pass driver, designed to reproduce a defined middle frequency segment rather than the full audio spectrum.
- A 4-inch midrange cone in the center dash produces relatively controlled directional output, with a radiation pattern well suited to projecting mid-band frequencies toward the front cabin occupants from the instrument panel.
- The physical diameter of a 4-inch driver imposes a specific cutout and mounting depth requirement at the center dash, and the specified compatibility with midrange types aligns with the moderate excursion demands of mid-band reproduction rather than the higher excursion of bass frequencies.
- Both the 1-inch tweeter and the 4-inch midrange are listed as compatible for both the 2017 and 2018 BMW 440i Gran Coupe center dash, indicating no change in size or type specifications between those 2 model years for the location.