BMW 335is Rear Deck Lid Speaker Size
The BMW 335is rear deck lid location accommodates a 4 inch speaker size across all listed model years. Compatible types for the rear deck lid include midrange audio units. These specifications cover the 2011 to 2013 system range.
| Year | Type | Size (inch) |
|---|---|---|
| 2013 | Midrange | 4 |
| 2012 | Midrange | 4 |
| 2011 | Midrange | 4 |
Speaker Types
| Type | Description |
|---|---|
| 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 is a horizontal surface positioned at the rear of the cabin, typically mounting speakers flush within a recessed or grille-covered enclosure above the trunk compartment.
- Speakers mounted in the rear deck lid face upward toward the headliner, a orientation that disperses sound broadly across the cabin interior rather than directing audio at a specific listening position.
- The 4-inch diameter specified for the BMW 335is rear deck lid represents a compact driver size, which produces limited low-frequency output but maintains accurate reproduction in the upper-midrange frequencies due to the reduced moving mass of a smaller cone.
- A 4-inch driver in a rear deck lid position operates within a structurally constrained cavity, as the trunk compartment below limits the available air volume behind the cone, affecting bass extension and resonance behavior.
- The midrange type designation refers to a speaker driver engineered to reproduce frequencies approximately between 500 Hz and 5,000 Hz, the range that contains fundamental vocal tones, instrument body resonance, and upper harmonic content.
- Midrange drivers are designed with cone materials and suspension characteristics tuned for accurate transient response within a defined frequency band, typically without the lightweight dome of a tweeter or the heavy excursion capability of a woofer.
- A 4-inch midrange in the rear deck lid of the BMW 335is serves the mid-cabin and rear-seat listening zone, supplementing front-stage drivers by reinforcing the vocal and instrument frequency range from behind the occupants.
- The rear deck lid location places the speaker at approximately ear level or slightly below for rear-seat passengers, which affects perceived directional imaging compared to a door-mounted or pillar-mounted installation.
- The 4-inch diameter imposes a physical constraint on the mounting depth and frame cutout required, factors relevant to compatibility with the deck lid's structural thickness and any existing grille or baffle framework.