BMW 550i GT xDrive Speaker Size
Speaker size, type, and location chart for BMW 550i GT xDrive models from 2010 to 2017 production years.
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Center Dash Speaker
| Years | Type | Size (inch) |
|---|---|---|
| 2010 - 2017 | Tweeter | 1 |
| 2010 - 2017 | Midrange | 4 |
Front Door Panel Speaker
| Years | Type | Size (inch) |
|---|---|---|
| 2010 - 2017 | Tweeter | 1 |
| 2010 - 2017 | Midrange | 4 |
Rear Door Panel Speaker
| Years | Type | Size (inch) |
|---|---|---|
| 2010 - 2017 | Tweeter | 1 |
| 2010 - 2017 | Midrange | 4 |
C-Pillar Speaker
| Years | Type | Size (inch) |
|---|---|---|
| 2010 - 2017 | Tweeter | 1 |
| 2010 - 2017 | Midrange | 4 |
Below Seats Speaker
| Years | Type | Size (inch) |
|---|---|---|
| 2010 - 2017 | Subwoofer | 8 |
BMW 550i GT xDrive Speaker FAQ
Which speakers should I replace first in my BMW 550i GT xDrive for the biggest sound improvement?
Start with the front door panel speakers. Replace both the 4-inch coaxial component drivers and 1-inch tweeters as a matched set. Front speakers handle most of your music's midrange and vocal content - around 200Hz to 4kHz where your ears are most sensitive. The BMW 550i GT xDrive uses separate tweeters and mid drivers in the front doors, which means you can upgrade to a proper component system. This gives you better imaging than the coaxial setups in rear locations. Consider 50-75 watts RMS speakers with 4-ohm impedance to match factory power levels.
What's the difference between the coaxial speakers in different locations of the BMW 550i GT xDrive?
The front door coaxials are actually component drivers - they work with separate tweeters. Rear door and center dash coaxials are full-range designs that include built-in tweeters. C-pillar speakers are also full-range coaxials. This means... well, the front setup potentially sounds better since dedicated tweeters can be positioned for optimal imaging. Full-range coaxials in rear positions mostly provide fill and ambiance. The center dash speakers probably handle some dialogue enhancement or surround processing. All are 4-inch drivers but serve different acoustic roles in the BMW 550i GT xDrive's sound staging.
Can I upgrade the 8-inch subwoofer below the seats in my BMW 550i GT xDrive?
Yes, but verify the mounting depth first. The factory 8-inch sub likely operates around 100-200 watts and handles frequencies below 120Hz. Measure the available space - many aftermarket 8-inch subs are deeper than factory units. Look for subs with similar power handling, maybe 150-250 watts RMS at 4 ohms. The BMW 550i GT xDrive's amplifier might be integrated with the factory sub, so you may need to retain the original connector or add a line output converter. Check if there's a separate amp driving this location or if it connects directly to the head unit.
Why does the BMW 550i GT xDrive have so many 1-inch tweeters throughout the cabin?
Multiple tweeter locations create a wider soundstage and better high-frequency coverage. The front door tweeters handle primary stereo imaging - frequencies above 3-4kHz. Rear door tweeters provide surround fill for passengers. C-pillar tweeters... they're positioned for rear-seat listening or possibly surround sound effects. Center dash tweeters might handle center channel processing or just fill gaps in the stereo field. Each 1-inch tweeter probably operates above 2.5kHz with different crossover points depending on location. This multi-tweeter approach in the BMW 550i GT xDrive aims for consistent treble response regardless of seating position.