BMW 340i Center Dash Speaker Size
The BMW 340i center dash location accommodates 1 inch speaker size and 4 inch speakers. Compatible types for the center dash include tweeters and midrange units. These specifications cover the 2016 to 2018 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 center dash location in the BMW 340i accommodates 2 distinct speaker sizes: 1 inch and 4 inch.
- A 1-inch tweeter mounted in the center dash position handles high-frequency reproduction, typically covering the range above 2,000 Hz, where directional sensitivity is high and placement relative to the listener's ear level becomes acoustically significant.
- The center dash is a near-field, horizontally centered position, which makes it particularly relevant for high-frequency drivers, as treble frequencies are highly directional and benefit from a source aligned with the listener's forward axis.
- A 4-inch midrange driver in the center dash location handles vocal and mid-band frequencies, generally spanning approximately 300 Hz to 5,000 Hz, covering the range most associated with speech intelligibility and tonal body in music.
- The 4-inch cone diameter provides a surface area suited to mid-frequency reproduction without the mass limitations that would hinder high-frequency response, or the excursion requirements of bass reproduction.
- The BMW 340i center dash speaker configuration pairs a 1-inch tweeter with a 4-inch midrange, indicating a two-way speaker arrangement at the center dash position across the listed model years.
- In a center dash mounting environment, enclosure depth and baffle width are typically constrained by dashboard architecture, favoring compact driver diameters such as the 4-inch midrange specified here.
- Tweeters of 1-inch diameter are among the most common sizes for automotive center dash installations, as the limited dome surface area is acoustically appropriate for the short wavelengths of high-frequency sound.
- The 2016 and 2018 model years of the BMW 340i share identical size and type specifications for the center dash location, with both accepting a 1-inch tweeter and a 4-inch midrange.