BMW M3 Center Dash Speaker Size
The BMW M3 center dash accommodates a 1 inch speaker size and 4 inch speakers. Compatible types for these units include tweeters and midrange speakers. These specifications cover the years 2008 through 2018.
| 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 |
| 2013 | Midrange | 4 |
| 2012 | Midrange | 4 |
| 2011 | Midrange | 4 |
| 2010 | Midrange | 4 |
| 2009 | Midrange | 4 |
| 2008 | 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 M3 sits along the vehicle's longitudinal axis, positioning speakers at or near the horizontal midpoint of the cabin interior.
- A center dash mounting position places drivers at a relatively elevated and forward point within the dashboard structure, which influences the radiation angle toward occupants seated in both the driver and front passenger positions.
- The 4-inch driver size designated for the center dash location in the BMW M3 occupies a compact mounting footprint, consistent with the typically shallow and spatially restricted cavities found within dashboard structures.
- A 4-inch driver handles midrange frequencies, generally covering the roughly 500 Hz to 5 kHz band that contains the bulk of vocal and instrumental fundamentals, placing midrange reproduction directly at the center of the soundstage in the BMW M3 center dash.
- The midrange type is designed to reproduce frequencies that correspond closely to the range of human speech intelligibility, making the center dash position acoustically significant for dialogue clarity in audio or communication systems.
- Midrange drivers are not engineered to reproduce deep bass or extreme high-frequency content, so the 4-inch midrange units listed for the BMW M3 center dash operate within a defined frequency band rather than across the full audible spectrum.
- The 1-inch tweeter size listed for model years 2015 through 2018 reflects the spatial constraints of a center dash location, where only small-diameter high-frequency drivers can be integrated without significant structural modification.
- A 1-inch tweeter reproduces high frequencies, typically from around 2 kHz to 20 kHz, and the small diaphragm diameter is acoustically appropriate for that range because shorter wavelengths require less cone area to radiate efficiently.
- Tweeters exhibit a narrowing dispersion pattern as frequency increases, and placement at the center dash in the BMW M3 positions the 1-inch tweeter's radiation pattern toward the front occupant area.
- The coexistence of a 1-inch tweeter and a 4-inch midrange within the same center dash location in the 2015-2018 BMW M3 indicates the presence of 2 discrete driver mounting points at that position.
- The 4-inch midrange is the sole speaker size listed for the BMW M3 center dash across model years 2008 through 2013, indicating a single-driver configuration at that location during those years.
- Mounting depth requirements for a 4-inch midrange driver are generally moderate, and the center dash cavity must accommodate the driver's basket depth, magnet assembly, and any required rear clearance without interference from underlying dashboard components.