2011 BMW 550i GT Speaker Sizes
The 2011 BMW 550i GT factory audio system includes c-pillar, center dash, front door panel, and rear door panel locations that accept 1 inch speakers and 4 inch speakers, while below seats accommodate an 8 inch speaker size. Compatible types for replacement and upgrade projects consist of tweeters, midranges, and subwoofers.
Specific details regarding locations, speaker sizes, and types are outlined in the compatibility chart.
| Location | Size | Type | Notes |
|---|---|---|---|
| Below Seats | 8 | Subwoofer |
|
| C-Pillar | 1 | Tweeter |
|
| C-Pillar | 4 | Midrange |
|
| Center Dash | 1 | Tweeter |
|
| Center Dash | 4 | Midrange |
|
| Front Door Panel | 1 | Tweeter |
|
| Front Door Panel | 4 | Midrange |
|
| Rear Door Panel | 1 | Tweeter |
|
| Rear Door Panel | 4 | Midrange |
|
2011 BMW 550i GT Speaker Replacement Summary
9
total positions
4
easy to replace
2
high priority
2
professional only
Replacement difficulty:
Low: 4 Medium: 3 High: 2Replacement priority:
High: 2 Medium: 5 Low: 22011 BMW 550i GT Radio Slot Size (DIN)
| DIN Type | Size (inch) | Size (mm) | Notes |
|---|---|---|---|
| Single DIN | 7"×2" | 180×50 | Standard size for basic car radios with small display or no display |
- Always measure the slot before purchasing a new radio
- Check slot depth - it may vary
Additional Notes
- The 2011 BMW 550i GT utilizes a multi-component speaker system with dedicated tweeters, midrange drivers, and subwoofers distributed across multiple locations throughout the cabin.
- Each tweeter location accepts 1 inch units, with identical sizing across the C-pillar, center dash, front door panel, and rear door panel positions.
- Midrange drivers are positioned in the same four locations as the tweeters, with all midrange positions accommodating 4 inch speakers.
- The subwoofer location beneath the seats accepts 8 inch drivers, providing low-frequency reinforcement separate from the tweeter and midrange locations.
- This configuration suggests a factory component system design where high frequencies, midrange frequencies, and bass are handled by separate specialized drivers rather than full-range coaxial speakers.
- Replacing the tweeters might offer noticeable improvements in high-frequency clarity and detail, particularly since smaller drivers tend to degrade faster than larger components.
- The 4 inch midrange speakers handle critical vocal and instrumental frequencies, making their replacement potentially significant for overall sound quality enhancement.
- Upgrading the 8 inch subwoofer could increase bass output and depth, though space constraints below the seats may limit aftermarket options.
- The single DIN radio opening provides a standard mounting size for aftermarket head unit installations, though integration with factory amplifiers and digital signal processing may require additional adapters.
- Component speaker replacements would need to match the specific impedance and power handling characteristics of the factory amplification system to function properly.