2009 Mercedes-Benz C350 Speaker Sizes
The 2009 Mercedes-Benz C350 speaker size chart provides factory speaker specifications and locations for replacement or aftermarket audio system upgrades. Information includes speaker sizes and positions for the front door panel, rear deck center, rear door panel, and center dash. Available data helps identify which aftermarket speakers are compatible with factory audio system locations.
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| Location | Size | Type | Notes |
|---|---|---|---|
| Center Dash | 3.5 | Full-Range |
|
| Front Door Panel | 1 | Tweeter |
|
| Front Door Panel | 6.5 | Midbass / Full-Range |
|
| Rear Deck Center | 1 | Tweeter |
|
| Rear Deck Center | 8 | Subwoofer |
|
| Rear Door Panel | 1 | Tweeter |
|
| Rear Door Panel | 6.5 | Midbass / Full-Range |
|
2009 Mercedes-Benz C350 Speaker Replacement Summary
7
total positions
4
easy to replace
2
high priority
0
professional only
Replacement difficulty:
Low: 4 Medium: 3 High: 0Replacement priority:
High: 2 Medium: 5 Low: 02009 Mercedes-Benz C350 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 2009 Mercedes-Benz C350 utilizes a distributed speaker configuration with dedicated tweeters positioned in multiple locations including the front door panels, rear door panels, and rear deck center, suggesting a factory-installed premium audio architecture designed for spatial sound staging.
- Replacement priorities typically focus on the 6.5 inch midbass or full-range units in both front and rear door panels, as these handle the majority of midrange frequencies and often show the most noticeable degradation over time compared to smaller tweeter elements.
- The inclusion of dedicated 1 inch tweeters at three separate locations indicates a multi-way system design, where aftermarket component speakers with separate crossovers could potentially integrate with existing tweeter positions or replace the entire front stage configuration.
- A factory 8 inch subwoofer location exists in the rear deck center position, providing a mounting point for aftermarket subwoofer upgrades without requiring custom enclosure fabrication or trunk space modification.
- The center dash houses a 3.5 inch full-range speaker that primarily handles center channel vocal frequencies and dialogue reproduction, though this location is sometimes overlooked during aftermarket upgrades focused on door-mounted speakers.
- Component speaker systems featuring 6.5 inch woofers with separate 1 inch tweeters could integrate into the existing mounting locations, potentially utilizing the factory tweeter positions while replacing the door-mounted midbass drivers for improved tonal accuracy.
- The double DIN radio opening allows for aftermarket head unit installations with advanced signal processing capabilities, which becomes relevant when upgrading speakers to models with different sensitivity ratings or impedance characteristics than factory units.
- Sound improvement from speaker replacement tends to be most noticeable in the door-mounted 6.5 inch positions, where upgraded cone materials and magnet structures can provide better transient response and reduced distortion compared to factory paper cone designs.