BMW 340i Rear Deck Lid Speaker Size
The BMW 340i rear deck lid location accommodates 1 inch speaker size and 4 inch speakers. Compatible types for the audio system include tweeter and midrange replacement units. These specifications cover the 2016 to 2018 chart of model years.
| Year | Type | Size (inch) |
|---|---|---|
| 2018 | Tweeter | 1 |
| 2018 | Midrange | 4 |
| 2016 | Tweeter | 1 |
| 2016 | 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 340i accommodates 2 distinct speaker sizes simultaneously, with a 1-inch and a 4-inch position present across the listed model years.
- The 1-inch tweeter position in the rear deck lid operates in a high-frequency range, typically reproducing sounds from approximately 2,000 Hz to 20,000 Hz, where short wavelengths benefit from the elevated and rearward-facing surface of a deck lid.
- A 1-inch tweeter diameter is standard for high-frequency transducers, as the small diaphragm moves with the speed and precision needed to reproduce treble content without distortion at upper frequencies.
- The 4-inch midrange position handles the vocal and instrumental frequency band, generally spanning from around 500 Hz to 5,000 Hz, placing it as a middle-tier driver within a multi-speaker rear deck layout.
- A 4-inch midrange driver in a rear deck lid location projects sound toward the rear cabin space, where reflections off the rear windshield and interior surfaces contribute to the overall sound field experienced by passengers.
- The BMW 340i rear deck lid in both the 2016 and 2018 model years supports a tweeter and midrange configuration, indicating a multi-driver mounting arrangement within the same structural panel.
- Midrange drivers at 4 inches occupy a size class that balances cone area for mid-frequency output with the dimensional constraints of an automotive deck lid cavity.
- The deck lid location positions speakers along the rear horizontal plane of the cabin, which affects the directionality and imaging characteristics of both the tweeter and midrange drivers relative to front-seated occupants.
- A tweeter in the rear deck lid placement faces upward or at an angle toward the passenger cabin, a position that influences the dispersion pattern of high-frequency content across the interior space.