2009 BMW 650i Speaker Sizes
The 2009 BMW 650i factory audio system contains specific mounting locations for various drivers. Center dash, front door panel, rear deck lid, and rear side panel locations accommodate 4 inch speakers, while front door panel and rear side panel locations support a 1 inch speaker size. Below seats locations accept 8 inch units. Compatible speaker types for replacement and upgrade procedures include tweeter, midrange, and subwoofer units.
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 |
|
| Front Door Panel | 1 | Tweeter |
|
| Front Door Panel | 4 | Midrange |
|
| Rear Deck Lid | 4 | Midrange |
|
| Rear Side Panel | 1 | Tweeter |
|
| Rear Side Panel | 4 | Midrange |
|
2009 BMW 650i Speaker Replacement Summary
7
total positions
3
easy to replace
2
high priority
0
professional only
Replacement difficulty:
Low: 3 Medium: 4 High: 0Replacement priority:
High: 2 Medium: 3 Low: 2Additional Notes
- The 2009 BMW 650i audio system incorporates a multi-driver configuration with distinct speaker types distributed across seven locations throughout the cabin.
- Tweeters at 1 inch are positioned in both front door panels and rear side panels, likely handling high-frequency reproduction above the crossover point.
- Four separate 4 inch midrange locations exist in the center dash, front door panels, rear deck lid, and rear side panels, suggesting a distributed approach to midrange frequency coverage.
- The front door panels house both 1 inch tweeters and 4 inch midrange drivers, indicating a component-style separation at the primary listening positions.
- An 8 inch subwoofer location below the seats provides low-frequency extension, though this mounting position may affect bass output characteristics compared to traditional trunk installations.
- Upgrading the midrange drivers could potentially yield noticeable improvements given their presence in four separate locations throughout the cabin.
- The tweeter locations in both front and rear positions suggest the factory system attempts to maintain high-frequency presence for all seating positions.
- Aftermarket component sets would need to account for the existing tweeter and midrange separation already built into the door panel architecture.
- The center dash midrange placement may serve dialogue clarity functions or contribute to soundstage width depending on system tuning.
- Replacement speakers would need to match the specific size constraints, particularly the 4 inch midrange openings which limit driver selection compared to larger formats.