BMW i3 Front Door Panel Speaker Size
The BMW i3 front door panel accommodates a 1 inch speaker size and supports 4 inch speakers. Compatible speaker types for the front door panel include tweeters and midrange units. The specifications cover the years 2014 to 2017.
| Year | Type | Size (inch) |
|---|---|---|
| 2017 | Tweeter | 1 |
| 2017 | Midrange | 4 |
| 2016 | Tweeter | 1 |
| 2016 | Midrange | 4 |
| 2015 | Tweeter | 1 |
| 2015 | Midrange | 4 |
| 2014 | Tweeter | 1 |
| 2014 | 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 front door panel location in the BMW i3 accommodates 2 distinct speaker sizes, 1 inch and 4 inch, each assigned to a different driver type within the same installation zone.
- A 1-inch tweeter operates in the upper frequency range, typically reproducing sounds above 2,000 Hz, where wavelengths are short enough to benefit from a small, precise diaphragm that minimizes distortion at high frequencies.
- Positioned in the front door panel, a 1-inch tweeter is commonly mounted at or near ear level to maintain the directional accuracy of high-frequency content, which becomes increasingly directional as frequency rises.
- The 4-inch midrange driver handles the vocal and instrument presence range, generally covering frequencies between approximately 300 Hz and 5,000 Hz, where much of the tonal definition in music and speech resides.
- A 4-inch cone diameter in a door panel location allows the driver to move enough air for midrange reproduction while fitting within the spatial constraints of an automotive door cavity without requiring deep mounting depth typical of larger woofers.
- The BMW i3 front door panel speaker configuration, with a 4-inch midrange handling mid-frequency content, keeps bass frequencies outside the scope of the door panel drivers entirely, as no woofer or subwoofer size is listed for the location.
- Door panel mounting introduces acoustic interaction with the interior door cavity, which functions as an enclosure behind the cone and affects the low-frequency extension and resonance behavior of the 4-inch midrange driver.
- The 1-inch tweeter's small physical footprint allows placement in areas of the door panel with limited surface area, such as upper corners or dedicated pods, where aiming angle toward the listening position can be optimized.
- Midrange drivers in door panel positions receive reflections from side windows and interior trim surfaces, which influence the perceived stereo imaging of the frequency band the 4-inch driver reproduces.
- The specifications apply uniformly across the 2014, 2015, 2016, and 2017 model years of the BMW i3, indicating no change in front door panel speaker sizing across that production range.