BMW M6 Rear Side Panel Speaker Size
The BMW M6 rear side panel accommodates a 1 inch speaker size and 4 inch speakers. Compatible types for these locations include tweeters and midrange audio units. The specifications cover a range of years from 2006 to 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 |
| 2014 | Tweeter | 1 |
| 2014 | Midrange | 4 |
| 2013 | Tweeter | 1 |
| 2013 | Midrange | 4 |
| 2012 | Tweeter | 1 |
| 2012 | Midrange | 4 |
| 2010 | Tweeter | 1 |
| 2010 | Midrange | 4 |
| 2009 | Tweeter | 1 |
| 2009 | Midrange | 4 |
| 2008 | Tweeter | 1 |
| 2008 | Midrange | 4 |
| 2007 | Tweeter | 1 |
| 2007 | Midrange | 4 |
| 2006 | Tweeter | 1 |
| 2006 | 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 rear side panel location in the BMW M6 accommodates 2 distinct speaker sizes, 1 inch and 4 inch, installed as a paired configuration within the same mounting zone.
- Rear side panels in enclosed cabin environments present limited baffle depth and constrained enclosure volume, which influences the physical dimensions of speakers that can be mounted there.
- A 4 inch midrange driver in the rear side panel handles the mid-frequency band, generally spanning approximately 300 Hz to 5,000 Hz, covering vocals, instruments, and the core of most audio program material originating from rear cabin positions.
- The relatively compact 4 inch diameter suits the shallow and spatially restricted mounting cavities typical of rear side panel locations, where larger cone drivers would require deeper enclosures to perform adequately.
- A 1 inch tweeter reproduces high frequencies, typically from around 2,000 Hz to 20,000 Hz, and the small diaphragm diameter is acoustically necessary for handling these short wavelengths without significant distortion or beaming.
- Tweeters at 1 inch exhibit a wide dispersion pattern at high frequencies relative to larger diaphragm designs, which is acoustically relevant in a rear side panel position where listeners are not directly on-axis with the driver.
- The BMW M6 rear side panel placement positions the tweeter at a lateral angle relative to rear seat occupants, meaning off-axis high-frequency dispersion from the 1 inch driver directly affects perceived treble clarity in the rear cabin.
- The 4 inch midrange in the BMW M6 rear side panel operates without a woofer counterpart at this location, meaning low-frequency reproduction below the midrange band is not assigned to rear side panel drivers in this specification.
- Midrange drivers are designed with relatively stiff, low-excursion cone structures compared to woofers, which is compatible with the limited rear enclosure volume available inside a side panel cavity.
- The consistent pairing of 1 inch tweeters and 4 inch midrange drivers across all listed model years indicates a stable mounting cutout geometry in the rear side panel throughout the M6 production span covered by the specifications.
- Side panel mounting locations generally present the speaker face at an angle toward the cabin interior rather than directly forward, which affects the acoustic axis orientation of both the midrange and tweeter drivers relative to seat positions.
- The 1 inch tweeter format is among the most common small-format tweeter sizes in automotive installations, and the rear side panel position in the M6 accommodates the shallow rear mounting depth that 1 inch dome or cone tweeters typically require.