2017 BMW 320i Speaker Sizes
The 2017 BMW 320i factory audio system contains specific locations designed to accept designated drivers. Center dash, front door panel, rear deck lid, and rear door panel locations accommodate 4 inch speakers and 1 inch units. Furthermore, below seats locations accept an 8 inch speaker size. Compatible speaker types for a replacement and upgrade consist of 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 320i 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 320i 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 320i factory audio system uses a three-way speaker configuration with dedicated tweeters, midrange drivers, and a subwoofer to separate frequency ranges across the audio spectrum.
- Tweeters in the center dash, front door panels, rear deck lid, and rear door panels measure 1 inch and handle high-frequency reproduction throughout the cabin.
- Midrange drivers at 4 inches occupy the same locations as the tweeters, suggesting either separate mounting points or component-style installations with crossovers routing specific frequencies to each driver type.
- The under-seat subwoofer configuration at 8 inches provides bass response while conserving cargo space, though this location may limit low-frequency output compared to larger enclosures.
- Replacing the 1-inch tweeters might refresh high-frequency clarity if the original silk or fabric dome materials have degraded, while aftermarket options could offer different tonal characteristics through aluminum or titanium construction.
- The 4-inch midrange speakers likely carry most of the vocal and instrumental content, making them candidates for upgrades if sound quality concerns focus on clarity in the critical mid-frequency band.
- The double DIN radio opening allows for aftermarket head unit installations that could provide additional power output or signal processing capabilities to drive upgraded speakers more effectively.
- Component speaker systems designed for these size specifications would typically include external crossovers to optimize frequency distribution between the 1-inch and 4-inch drivers in each location.
- The distributed tweeter placement across four locations suggests the factory system prioritizes high-frequency dispersion to create a balanced soundstage for multiple seating positions.