2010 BMW 128i Speaker Sizes
The speaker size chart for the 2010 BMW 128i provides factory speaker specifications and locations within the audio system. Information covers replacement speakers installed in the front door panels, rear side panels, rear deck lid, and below the seats. Details include specifications for both factory and aftermarket speakers available as upgrade options for each audio system location.
As an Amazon Associate, we may earn a commission from purchases made through links marked. Read more in our disclaimer.
| Location | Size | Type | Notes |
|---|---|---|---|
| Below Seats | 8 | Subwoofer |
|
| Front Door Panel | 0.75 | Tweeter |
|
| Front Door Panel | 4 | Midrange |
|
| Rear Deck Lid | 4 | Midrange |
|
| Rear Side Panel | 0.75 | Tweeter |
|
| Rear Side Panel | 4 | Midrange |
|
2010 BMW 128i Speaker Replacement Summary
6
total positions
3
easy to replace
2
high priority
0
professional only
Replacement difficulty:
Low: 3 Medium: 3 High: 0Replacement priority:
High: 2 Medium: 2 Low: 22010 BMW 128i Radio Slot Size (DIN)
| DIN Type | Size (inch) | Size (mm) | Notes |
|---|---|---|---|
| Single DIN or Double DIN | 7"×2" or 7"×4" | 180×50 or 180×100 | Vehicle supports both radio sizes |
- Always measure the slot before purchasing a new radio
- Check slot depth - it may vary
Additional Notes
- The 2010 BMW 128i utilizes a component speaker system with separate tweeters and midrange drivers distributed across multiple locations rather than traditional full-range coaxial speakers in single positions.
- Tweeters measuring 0.75 inch are installed in both front door panels and rear side panels, handling the upper frequency range of the audio spectrum.
- Midrange drivers at 4 inches are found in three locations: front door panels, rear side panels, and the rear deck lid, suggesting a focus on mid-frequency clarity throughout the cabin.
- The factory configuration includes an 8 inch subwoofer positioned below the seats, which may be less accessible for replacement compared to door-mounted or deck-mounted speakers.
- Replacing the front door panel speakers would address both tweeter and midrange components in a primary listening position, potentially offering noticeable sonic improvements with quality aftermarket units.
- The separate tweeter and midrange setup in the 2010 BMW 128i allows for targeted upgrades, where individual components can be replaced based on specific frequency range deficiencies rather than requiring complete speaker assembly changes.
- Aftermarket component speaker systems designed for similar size specifications could maintain the factory mounting locations while potentially improving frequency response and power handling capabilities.
- The radio accommodates both Single DIN and Double DIN head units, providing flexibility for audio source upgrades that could complement speaker replacements.
- Under-seat subwoofer replacement might require consideration of enclosure volume and impedance matching to maintain proper integration with any retained factory amplification.