2009 Mercedes-Benz C300 Speaker Sizes

The 2009 Mercedes-Benz C300 speaker size chart provides factory speaker specifications for replacement or aftermarket upgrade purposes. Information includes locations throughout the audio system: front door panel, rear deck center, rear door panel, and center dash. Data covers speaker sizes and configuration details to assist with identifying compatible aftermarket options for the factory audio system.

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Speaker Details by Location
Location Size Type Notes
Center Dash 3.5 Full-Range
  • Requires dashboard disassembly
  • Medium replacement priority
  • Replacement difficulty: medium
Front Door Panel 1 Tweeter
  • Standard installation
  • High replacement priority
  • Replacement difficulty: low
Front Door Panel 6.5 Midbass / Full-Range
  • Standard installation
  • High replacement priority
  • Replacement difficulty: low
Rear Deck Center 1 Tweeter
  • Requires shelf removal
  • Medium replacement priority
  • Replacement difficulty: medium
Rear Deck Center 8 Subwoofer
  • Requires shelf removal
  • Medium replacement priority
  • Replacement difficulty: medium
Rear Door Panel 1 Tweeter
  • Standard installation
  • Medium replacement priority
  • Replacement difficulty: low
Rear Door Panel 6.5 Midbass / Full-Range
  • Standard installation
  • Medium replacement priority
  • Replacement difficulty: low

2009 Mercedes-Benz C300 Speaker Replacement Summary

7 total positions
4 easy to replace
2 high priority
0 professional only

Replacement difficulty:

Low: 4 Medium: 3 High: 0

Replacement priority:

High: 2 Medium: 5 Low: 0

2009 Mercedes-Benz C300 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 C300 contains multiple speaker locations with varying sizes, ranging from 1-inch tweeters to an 8-inch rear deck subwoofer position, suggesting a factory audio configuration that separates frequency ranges across different driver types.
  • Tweeters occupy three locations in the vehicle: both front door panels, both rear door panels, and the rear deck center, each accepting 1-inch units designed for high-frequency reproduction.
  • Two 6.5-inch locations exist in the front and rear door panels, compatible with either midbass drivers or full-range speakers, providing flexibility in component system design or direct full-range replacements.
  • The center dash houses a 3.5-inch full-range speaker, which typically handles mid-range frequencies and contributes to the soundstage width across the dashboard area.
  • An 8-inch subwoofer location in the rear deck center indicates factory provisions for low-frequency reinforcement, though aftermarket options in this size category may offer enhanced bass response compared to original equipment.
  • The double DIN radio opening in the 2009 Mercedes-Benz C300 allows for aftermarket head unit installations with larger touchscreen displays or advanced connectivity features while maintaining integration with existing speaker locations.
  • Replacing the 6.5-inch door speakers with higher-sensitivity aftermarket midbass or full-range units could produce noticeable improvements in midrange clarity and overall output levels without requiring amplification changes.
  • The separation of tweeter and larger driver sizes across multiple locations suggests that component speaker systems with external crossovers may integrate more naturally than coaxial designs in certain positions.