BMW 550i GT xDrive Center Dash Speaker Size
The BMW 550i GT xDrive center dash location accommodates a 1 inch speaker size and 4 inch speakers. Compatible audio types for the location include tweeters and midrange units. The specifications cover a range from 2010 to 2017.
| Year | Type | Size (inch) |
|---|---|---|
| 2017 | Tweeter | 1 |
| 2017 | Midrange | 4 |
| 2016 | Tweeter | 1 |
| 2016 | Midrange | 4 |
| 2015 | Tweeter | 1 |
| 2015 | Midrange | 4 |
| 2014 | Tweeter | 1 |
| 2014 | Midrange | 4 |
| 2013 | Tweeter | 1 |
| 2013 | Midrange | 4 |
| 2012 | Tweeter | 1 |
| 2012 | Midrange | 4 |
| 2011 | Tweeter | 1 |
| 2011 | Midrange | 4 |
| 2010 | Tweeter | 1 |
| 2010 | 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 550i GT xDrive sits at the top of the dashboard, centered along the vehicle's longitudinal axis, a position that places speakers at approximately ear level and equidistant from the driver and front passenger.
- A center dash mounting position typically involves shallow, constrained cavities with limited rear depth, which influences the physical dimensions of compatible speakers and the enclosure volume available for cone excursion.
- The 4-inch midrange diameter found in the BMW 550i GT xDrive center dash specification is sized to handle the mid frequencies - roughly 300 Hz to 5,000 Hz - where the majority of vocal clarity, instrument body, and tonal presence reside.
- A 4-inch cone has a surface area sufficient to move air for midrange reproduction while remaining small enough to fit within the spatial constraints of a center dash mounting cavity, where larger cones would require depth and baffle area not typically available.
- The 1-inch tweeter diameter is a standard dimension for high-frequency transducers, designed to reproduce frequencies generally above 2,000 Hz to 3,000 Hz, where a small, light diaphragm is acoustically necessary to maintain accurate high-frequency response without distortion.
- A 1-inch tweeter at the center dash position benefits from the elevated, central placement, as high frequencies are highly directional and a central mounting point allows treble detail to project toward both front seating positions without significant off-axis loss.
- The pairing of a 1-inch tweeter and a 4-inch midrange within the same center dash location indicates a two-driver arrangement at this mounting point, with each driver handling a separate portion of the audible frequency spectrum.
- The center dash position is acoustically significant for imaging, as sounds originating from the vehicle's centerline contribute to the perception of a stable, front-focused stereo soundstage across both front seats.
- The midrange driver at the center dash is positioned to reinforce the frequency range most associated with vocal reproduction, which is particularly relevant to a centrally mounted speaker tasked with anchoring the sound image between the driver and passenger.
- The 4-inch midrange size does not carry the low-frequency extension of larger woofer cones, as the smaller cone area and typically shallower mounting depth in a center dash location limit the acoustic output and cone displacement needed for bass reproduction.