2009 Mercedes-Benz SLK350 Speaker Sizes
The 2009 Mercedes-Benz SLK350 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 and behind rear seat accept 6.5 inch units and 1 inch units respectively. Compatible types for replacement or upgrade include tweeter, full-range, and midbass.
Specific details regarding locations, speaker sizes, and types are outlined in the compatibility chart.
| Location | Size | Type | Notes |
|---|---|---|---|
| Behind Rear Seat | 1 | Tweeter |
|
| Center Dash | 3.5 | Full-Range |
|
| Front Door Panel | 1 | Tweeter |
|
| Front Door Panel | 6.5 | Midbass / Full-Range |
|
2009 Mercedes-Benz SLK350 Speaker Replacement Summary
4
total positions
2
easy to replace
2
high priority
0
professional only
Replacement difficulty:
Low: 2 Medium: 2 High: 0Replacement priority:
High: 2 Medium: 2 Low: 02009 Mercedes-Benz SLK350 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 SLK350 features a multi-speaker configuration that includes both dedicated tweeters and larger mid-range drivers, suggesting a factory setup designed for frequency separation across the audio spectrum.
- Tweeters located in the front door panels and behind the rear seat are rated at 1 inch, which typically indicates the mounting cutout size rather than the actual driver cone dimensions for these high-frequency components.
- The center dash position accommodates a 3.5 inch full-range speaker that likely handles mid-frequency reproduction and vocal clarity in the central soundstage area.
- Front door panels contain both 1 inch tweeters and 6.5 inch drivers in what may be a factory two-way component arrangement, with the larger drivers handling midbass and midrange frequencies.
- The 6.5 inch front door speakers accept either midbass or full-range replacements, providing flexibility depending on whether the installer wishes to maintain frequency division or consolidate drivers.
- Replacing the front door 6.5 inch speakers would likely produce the most substantial improvement in overall sound quality, as these drivers reproduce the majority of musical content and vocal range.
- The dual radio compatibility with both single DIN and double DIN head units in the 2009 Mercedes-Benz SLK350 suggests aftermarket stereo upgrades can be accomplished without extensive dashboard modification.
- Tweeter replacement may require attention to sensitivity ratings and impedance matching to maintain proper frequency balance with the existing or upgraded midbass drivers in the door locations.
- The center dash full-range speaker at 3.5 inches could contribute to center channel imaging, though its small size may limit low-frequency output compared to the door-mounted components.