2014 BMW 640i Speaker Sizes
The 2014 BMW 640i factory audio system contains several locations equipped for distinct audio components. Center dash, front door panel, rear deck lid, and rear side panel locations accommodate 1 inch speakers and 4 inch units, while below seats locations support an 8 inch speaker size. Available audio replacement and upgrade components 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 |
|
| Center Dash | 4 | Midrange |
|
| Center Dash | 1 | Tweeter |
|
| 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 |
|
2014 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 2014 BMW 640i uses a three-way speaker configuration that separates frequency reproduction across dedicated components, with 1-inch tweeters handling high frequencies, 4-inch midrange drivers managing vocal and instrumental mid-tones, and 8-inch subwoofers positioned below the seats for low-frequency output.
- Replacing the factory tweeters might provide noticeable improvements in high-frequency clarity and detail, particularly since these 1-inch components are distributed across four locations including the center dash, front door panels, rear deck lid, and rear side panels.
- The midrange speakers follow the same distribution pattern as the tweeters, with 4-inch drivers located in corresponding positions throughout the cabin, suggesting that upgrading these components could affect vocal reproduction and instrumental presence across the soundstage.
- The subwoofer placement below the seats in the 2014 BMW 640i indicates a design approach that attempts to provide bass response without consuming trunk space, though this location may present challenges for accessing or replacing the 8-inch components.
- A complete speaker replacement strategy would involve addressing eight tweeters, eight midrange drivers, and at least one subwoofer, representing a substantial investment in aftermarket components if seeking system-wide improvements.
- The 4-inch midrange drivers occupy a size category that offers reasonable selection in the aftermarket audio market, potentially allowing for upgrades that balance sensitivity, power handling, and tonal characteristics.