BMW 340i GT xDrive Center Dash Speaker Size
The BMW 340i GT xDrive center dash location accommodates a 1 inch speaker size and 4 inch speakers. Compatible types for these units include tweeter and midrange. These specifications cover the 2017 to 2018 range of model years.
| 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 340i GT xDrive accommodates 2 distinct speaker sizes across the listed model years: 1 inch and 4 inch.
- A 1-inch tweeter mounted in the center dash position operates in the high-frequency range, typically covering frequencies from around 2 kHz up to 20 kHz or beyond.
- The center dash placement of a 1-inch tweeter positions the high-frequency driver near ear level and toward the acoustic center of the vehicle's front soundstage, which is a geometrically favorable location for stereo imaging of high-frequency content.
- A 4-inch midrange driver in the center dash handles the vocal and instrumental frequency band, generally spanning from approximately 300 Hz to 5 kHz, where much of the perceived clarity and presence of audio content resides.
- The 4-inch cone diameter of the midrange driver is large enough to reproduce the lower portion of the midrange band with reasonable efficiency while remaining compact enough for a center dash cavity.
- Midrange drivers lack the excursion and surface area required to extend into bass frequencies, making the 4-inch unit in the center dash position a dedicated mid-frequency reproducer rather than a full-range driver.
- The BMW 340i GT xDrive center dash location supports both a tweeter and a midrange driver simultaneously, indicating the position contains 2 separate speaker mounting points or a dual-driver configuration within the same panel area.
- Tweeters in a center dash position benefit from a hard, reflective surface environment that characterizes typical dash construction, which can affect high-frequency dispersion and require acoustic consideration during installation.
- The 4-inch midrange driver's relatively narrow directional output at higher frequencies reinforces the role of the separately mounted 1-inch tweeter, which is better suited to wide high-frequency dispersion from the same location.