BMW 340i xDrive Center Dash Speaker Size
The BMW 340i xDrive center dash location accommodates a 1 inch speaker size and 4 inch speakers. Compatible types for these units include tweeter and midrange audio system components. These specifications cover the 2016 to 2018 model range.
| Year | Type | Size (inch) |
|---|---|---|
| 2018 | Tweeter | 1 |
| 2018 | Midrange | 4 |
| 2016 | Tweeter | 1 |
| 2016 | 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 xDrive accommodates 2 distinct speaker sizes, specifically 1 inch and 4 inch, each serving a separate acoustic role within the same mounting area.
- A center dash position places speakers along the horizontal surface at the top of the instrument panel, oriented to project sound toward the windshield or directly toward the listening cabin, which affects both dispersion angle and reflective behavior.
- The 1 inch diameter specification at the center dash corresponds to a tweeter, a driver designed to reproduce high-frequency content typically ranging from around 2 kHz up to 20 kHz or beyond.
- At a center dash location, a tweeter's small diaphragm and wide high-frequency dispersion contribute to stereo imaging and soundstage width across the front of the cabin.
- The 4 inch diameter specification at the center dash is paired with a midrange type, a driver focused on the frequency band roughly between 300 Hz and 5 kHz, which contains the majority of vocal and instrumental harmonic content.
- A 4 inch midrange in a center dash position has a relatively compact cone area suited to a shallow or recessed mounting depth, as center dash cavities typically offer limited rear clearance compared to door or kick panel locations.
- The BMW 340i xDrive center dash mounting points accommodate both a 1 inch tweeter and a 4 inch midrange, indicating the presence of separate dedicated baffles or enclosures for each driver size within the dash structure.
- For the 2016 and 2018 model years covered in the specifications, the compatible speaker sizes and types at the center dash position remain consistent, with no variation in either diameter or driver category between those years.
- A midrange driver at 4 inches operates at wavelengths where directional beaming begins to emerge, meaning the center dash placement influences how midrange frequencies are distributed across the seating positions in the cabin.
- The 1 inch tweeter format at the center dash of the BMW 340i xDrive is a standard dome or soft-dome form factor, which is dimensionally shallow and compatible with the tight spatial constraints typical of instrument panel speaker cutouts.