BMW 340i xDrive Rear Deck Lid Speaker Size
The BMW 340i xDrive rear deck lid accommodates 1 inch speaker size and 4 inch speakers. Compatible types for the location include tweeters and midrange units. The specifications cover the 2016 to 2018 range of 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 xDrive accommodates 2 distinct speaker sizes across the listed model years, with each size corresponding to a different driver type.
- The 1-inch drivers listed for the rear deck lid position are tweeters, a class of speaker designed to reproduce high-frequency content, generally spanning from approximately 2 kHz up to 20 kHz or beyond.
- Tweeters in a rear deck lid location project high-frequency audio toward the rear cabin and rear window glass, a surface that can reflect treble energy into the passenger compartment.
- The 4-inch drivers specified for the rear deck lid are midrange speakers, responsible for frequencies roughly between 300 Hz and 5 kHz, the band that carries much of vocal presence and instrumental body.
- A 4-inch midrange cone has a relatively compact radiating surface, which at a rear deck lid position contributes directional mid-frequency energy into the cabin from behind the rear seating area.
- The rear deck lid is a shallow, horizontally oriented enclosure surface, meaning speaker depth clearance is a primary spatial constraint for both the 1-inch and 4-inch installations.
- Mounting a tweeter and a midrange in the same rear deck lid zone indicates a multi-driver configuration at that location, where each driver handles a separate portion of the frequency spectrum.
- The BMW 340i xDrive rear deck lid hosts both driver sizes across the 2016 and 2018 model years listed, with the size and type pairings remaining consistent between those 2 years.
- A 1-inch tweeter dome is typically shallow in mounting depth, a property that aligns with the limited vertical clearance common to rear deck lid panels.
- The 4-inch midrange format, while compact relative to woofer-class drivers, still requires sufficient baffle area and depth behind the grille surface to seat the basket and magnet assembly within the deck lid structure.