BMW 335i Rear Deck Lid Speaker Size
The BMW 335i rear deck lid accommodates a 1 inch speaker size and 4 inch speakers, supporting both sizes across the model range. Compatible audio types for these locations include tweeters and midrange units. The specifications cover the 2007 to 2015 model years.
| Year | Type | Size (inch) |
|---|---|---|
| 2015 | Tweeter | 1 |
| 2015 | Midrange | 4 |
| 2014 | Tweeter | 1 |
| 2014 | Midrange | 4 |
| 2013 | Tweeter | 1 |
| 2013 | Midrange | 4 |
| 2012 | Midrange | 4 |
| 2011 | Tweeter | 1 |
| 2011 | 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 |
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 deck lid of the BMW 335i accommodates 2 distinct speaker sizes across the listed model years: 1 inch and 4 inch.
- A rear deck lid location sits horizontally at the base of the rear window, behind the rear seating area, and typically involves shallow mounting depth constraints due to the structural panels and trunk cavity beneath.
- The 4-inch midrange drivers in the BMW 335i rear deck lid operate in the mid-frequency band, generally covering approximately 300 Hz to 5,000 Hz, handling the vocal and instrumental range that forms the core of audio reproduction.
- At 4 inches, the cone diameter is small enough to fit within the limited panel space of a rear deck lid while still moving sufficient air to reproduce midrange frequencies with reasonable output.
- The 1-inch tweeters paired at the BMW 335i rear deck lid location are sized to reproduce high frequencies, typically above 3,500 Hz, where short wavelengths demand a small, lightweight diaphragm capable of rapid movement.
- Tweeters are highly directional at high frequencies, meaning placement on a rear horizontal deck surface affects the dispersion angle toward the listening area occupied by rear and front passengers.
- The 2012 model year is the only entry in the specifications that lists solely a 4-inch midrange without a corresponding 1-inch tweeter position at the rear deck lid.
- The simultaneous presence of 1-inch tweeters and 4-inch midrange drivers at the same location indicates a multi-driver configuration within the rear deck lid panel rather than a single full-range installation.
- Midrange drivers of 4 inches are generally crossed over both above and below their operating band, relying on the tweeter to handle frequencies where the larger cone's mass and size would otherwise cause breakup or beaming.
- The rear deck lid is a common acoustic surface in sedan body styles because the large, relatively flat panel area allows multiple speaker cutouts without significant structural compromise, while proximity to the rear glass can create reflective acoustic interaction.