BMW 335is Center Dash Speaker Size
The BMW 335is center dash location accommodates a 4 inch speaker size across all listed model years. Midrange units represent the compatible speaker type for the audio system. These specifications cover the 2011 to 2013 range of model years.
| 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 center dash location in the BMW 335is sits at the uppermost point of the dashboard, positioning the speaker at ear level and near the windshield, which creates a reflective surface that reinforces forward sound projection toward the cabin occupants.
- A 4-inch speaker cone surface area is suited to reproducing upper-bass and midrange frequencies, roughly spanning 200 Hz to 5 kHz, which aligns with the vocal and instrumental presence range most critical to a centered soundstage.
- The center dash mounting position places the driver in a near-field relationship with the speaker, meaning lower excursion and power handling are sufficient to achieve adequate sound pressure levels at the listening position.
- Midrange drivers are designed to handle the frequencies where human speech intelligibility is concentrated, making the center dash the acoustically logical placement for vocal reproduction within a stereo or multi-channel front stage.
- A 4-inch midrange in the BMW 335is center dash operates without the low-frequency demands that would require a larger enclosure volume, which is consistent with the shallow and constrained cavity typically found beneath a dashboard fascia.
- Midrange speakers are generally not intended to reproduce deep bass or high treble, so the center dash position in the 335is functions as a fill speaker within a broader multi-speaker system rather than a full-range source.
- The 4-inch diameter imposes a physical depth requirement that must be compatible with the center dash cavity; shallow-mount designs are often necessary in dashboard locations where structural elements or HVAC ducting limit rear clearance.
- Midrange drivers at the center dash position contribute to phantom center imaging in a stereo configuration, anchoring vocals and dialogue to the middle of the soundstage between the left and right front speakers.
- The mounting orientation at the center dash is typically angled slightly upward or toward the driver, a geometry that affects the on-axis frequency response and the degree of high-frequency dispersion within the passenger compartment.