2017 BMW 330i Speaker Sizes
The 2017 BMW 330i factory audio system contains specific locations for audio components. Center dash, front door panel, rear deck lid, and rear door panel accommodate 4 inch speakers and a 1 inch speaker size, while below seats support 8 inch units. Available audio components function as a replacement and upgrade featuring tweeters, midrange units, 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 | 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 |
|
2017 BMW 330i 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: 02017 BMW 330i Radio Slot Size (DIN)
| DIN Type | Size (inch) | Size (mm) | Notes |
|---|---|---|---|
| Double DIN | 7"×4" | 180×100 | Double size for modern multimedia systems with large touchscreens |
- Always measure the slot before purchasing a new radio
- Check slot depth - it may vary
Additional Notes
- The 2017 BMW 330i factory audio system distributes tweeters across multiple locations including the center dash, front door panels, rear deck lid, and rear door panels, all utilizing 1 inch units.
- Midrange speakers at 4 inches are positioned in the same locations as the tweeters, suggesting a component speaker configuration rather than full-range coaxial units.
- The subwoofer location below the seats indicates a space-efficient design, with the 8 inch unit potentially providing bass reinforcement without consuming trunk space.
- Upgrading the 4 inch midrange speakers may offer more noticeable sound quality improvements than replacing the 1 inch tweeters, as midrange drivers typically handle a broader frequency range where most vocal and instrumental content resides.
- The double DIN radio opening allows for aftermarket head unit installations that can accommodate larger touchscreen displays and modern connectivity features.
- Component speaker systems with separate tweeters and midrange drivers generally provide better stereo imaging and soundstage compared to coaxial designs, though this configuration requires more complex wiring.
- The 8 inch subwoofer size represents a balance between bass output and physical constraints, though aftermarket replacement options in this size category may offer improved low-frequency extension and power handling.
- Tweeter replacement priority might be lower than midrange or subwoofer upgrades, as 1 inch units typically have fewer sonic deficiencies in factory installations and contribute less to overall tonal balance.