2018 BMW X4 Speaker Sizes
The 2018 BMW X4 speaker size chart provides factory audio system specifications for replacement or aftermarket upgrade purposes. Data includes speaker locations throughout the cabin: center dash, front door panel, rear deck lid, rear door panel, and below seats. Information covers original equipment specifications to assist with aftermarket component installation and audio system modifications.
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| 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 Door Panel | 1 | Tweeter |
|
| Rear Door Panel | 4 | Midrange |
|
2018 BMW X4 Speaker Replacement Summary
9
total positions
6
easy to replace
2
high priority
0
professional only
Replacement difficulty:
Low: 6 Medium: 3 High: 0Replacement priority:
High: 2 Medium: 7 Low: 0Additional Notes
- The 2018 BMW X4 audio system incorporates a three-way speaker configuration with dedicated tweeters, midrange drivers, and subwoofers distributed across multiple locations throughout the cabin.
- Tweeters measuring 1 inch are positioned in four distinct locations: the center dash, front door panels, rear door panels, and rear deck lid, suggesting a focus on high-frequency sound dispersion throughout the listening environment.
- Midrange drivers at 4 inches occupy the same four locations as the tweeters, indicating a component-style setup where high and mid frequencies are handled by separate dedicated units rather than a single full-range speaker.
- The subwoofer placement below the seats at 8 inches may provide low-frequency reinforcement while conserving cargo space and maintaining a low profile within the cabin structure.
- When replacing factory speakers, the component system design suggests that upgrading both the tweeters and midrange drivers in each location could yield more noticeable sound quality improvements than replacing only one type.
- The identical speaker sizes across front and rear locations could potentially simplify the selection process when sourcing aftermarket replacements, as the same components might be used in multiple positions.
- The presence of midrange drivers at 4 inches indicates that this size handles the critical vocal and instrumental frequency range, which tends to be most sensitive to speaker quality differences.