2009 Mercedes-Benz CLK350 Speaker Sizes

The 2009 Mercedes-Benz CLK350 factory audio system features a center dash that accommodates 3.5 inch speakers, and a front door panel which accepts a 1 inch speaker size. Additionally, the front door panel, rear side panel, and behind rear seat locations support 6.5 inch units. Compatible types for audio replacement and upgrade consist of tweeters, midbass, and full-range units.

Specific details regarding locations, speaker sizes, and types are outlined in the compatibility chart.

Speaker Details by Location
Location Size Type Notes
Behind Rear Seat 6.5 Midbass / Full-Range
  • Requires seat removal
  • Limited access space
  • Medium replacement priority
  • Replacement difficulty: medium
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 Side Panel 6.5 Midbass / Full-Range
  • Requires trim removal
  • Medium replacement priority
  • Replacement difficulty: medium

2009 Mercedes-Benz CLK350 Speaker Replacement Summary

5 total positions
2 easy to replace
2 high priority
0 professional only

Replacement difficulty:

Low: 2 Medium: 3 High: 0

Replacement priority:

High: 2 Medium: 2 Low: 1

2009 Mercedes-Benz CLK350 Radio Slot Size (DIN)

DIN Type Size (inch) Size (mm) Notes
Single DIN or Double DIN 7"×2" or 7"×4" 180×50 or 180×100 Vehicle supports both radio sizes
  • Always measure the slot before purchasing a new radio
  • Check slot depth - it may vary

Additional Notes

  • The 2009 Mercedes-Benz CLK350 incorporates a tweeter location in the front door panel with a 1-inch mounting position, which could allow for dedicated high-frequency reproduction when paired with component speaker systems.
  • Three separate 6.5-inch locations exist throughout the cabin, suggesting potential for consistent sonic character if equipped with matched drivers across front doors, rear side panels, and the position behind the rear seat.
  • The center dash houses a 3.5-inch full-range speaker position that may serve as a dedicated center channel or dialogue anchor point in the factory configuration.
  • Component speaker systems with separate tweeters and woofers would likely integrate well given the existing tweeter provision in the front door panel alongside the 6.5-inch midbass location.
  • Upgrading the front door panel speakers might take priority since this location typically handles both the dedicated tweeter and the larger 6.5-inch driver that reproduces midrange and lower frequencies.
  • Aftermarket midbass drivers in the 6.5-inch positions could potentially improve low-frequency response and impact compared to factory full-range alternatives that attempt to cover the entire frequency spectrum.
  • The radio accommodates both single DIN and double DIN head unit configurations, which may provide flexibility for source unit upgrades alongside speaker replacements.
  • Five distinct speaker locations suggest a multi-channel factory setup that replacement speakers would need to work within or potentially reconfigure depending on aftermarket amplification choices.