2012 BMW 640i Speaker Sizes
The 2012 BMW 640i speaker size chart provides factory specifications for all speaker locations within the audio system. Information includes replacement speaker sizes for center dash, front door panel, rear deck lid, rear side panel, and below seats positions. Aftermarket upgrade compatibility details are provided for each factory 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 |
|
| Center Dash | 1 | Tweeter |
|
| Center Dash | 4 | Midrange |
|
| Front Door Panel | 1 | Tweeter |
|
| Front Door Panel | 4 | Midrange |
|
| Rear Deck Lid | 1 | Tweeter |
|
| Rear Deck Lid | 4 | Midrange |
|
| Rear Side Panel | 1 | Tweeter |
|
| Rear Side Panel | 4 | Midrange |
|
2012 BMW 640i Speaker Replacement Summary
9
total positions
4
easy to replace
2
high priority
0
professional only
Replacement difficulty:
Low: 4 Medium: 5 High: 0Replacement priority:
High: 2 Medium: 5 Low: 2Additional Notes
- The 2012 BMW 640i utilizes a multi-driver speaker configuration with separate tweeters and midrange drivers distributed across multiple locations throughout the cabin, suggesting a factory audio system designed around component-style speaker separation rather than full-range coaxial units.
- Tweeters measuring 1 inch are positioned in the center dash, front door panels, rear deck lid, and rear side panels, indicating a focus on high-frequency dispersion from multiple points to create a broader soundstage.
- The 4-inch midrange drivers occupy the same four locations as the tweeters, working in conjunction to handle mid-frequency reproduction while the tweeters address higher frequencies.
- An 8-inch subwoofer located below the seats provides low-frequency output, which may be more challenging to access for replacement compared to the door-mounted and deck-mounted speakers.
- Upgrading the tweeters and midrange speakers in the 2012 BMW 640i would likely require component speaker sets or individual drivers that match the 1-inch and 4-inch specifications, rather than standard coaxial replacements.
- The symmetrical distribution of both tweeters and midrange drivers between front and rear locations suggests the factory system was designed to provide balanced audio coverage for all seating positions.
- Replacement speakers would need to accommodate the specific mounting depths and configurations at each location, particularly for the paired tweeter and midrange setup in the doors and deck areas.