2009 Audi A4 Speaker Sizes
Speaker size chart for the 2009 Audi A4 displays specifications for factory audio system locations, including dashboard, front door panel, rear door panel, center dash, rear deck lid, and rear side panel. Information covers speaker sizes and mounting details for replacement or aftermarket upgrade installations. Data assists in determining compatible speakers for each position within the vehicle's audio system.
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| Location | Size | Type | Notes |
|---|---|---|---|
| Center Dash | 2.5 | Midrange |
|
| Center Dash | 3 | Midrange |
|
| Dashboard | 1 | Tweeter |
|
| Dashboard | 3 | Full-Range |
|
| Front Door Panel | 6.5 | Midbass / Full-Range |
|
| Front Door Panel | 1 | Tweeter |
|
| Front Door Panel | 5.25 | Midbass / Full-Range |
|
| Rear Deck Lid | 3.5 | Full-Range |
|
| Rear Deck Lid | 8 | Woofer |
|
| Rear Door Panel | 1 | Tweeter |
|
| Rear Door Panel | 6.5 | Midbass / Full-Range |
|
| Rear Side Panel | 5.25 | Midbass / Full-Range |
|
2009 Audi A4 Speaker Replacement Summary
12
total positions
7
easy to replace
3
high priority
0
professional only
Replacement difficulty:
Low: 7 Medium: 5 High: 0Replacement priority:
High: 3 Medium: 8 Low: 12009 Audi A4 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 Audi A4 contains multiple speaker locations with varying sizes, suggesting a multi-component audio system design that separates frequency ranges across different speaker types.
- Tweeters at 1 inch are positioned in the dashboard, front door panels, and rear door panels, indicating a focus on high-frequency reproduction throughout the cabin.
- Midrange speakers at 2.5 inch and 3 inch are located in the center dash area, which may handle vocal and instrumental frequencies in the middle spectrum.
- The front and rear door panels accommodate both 5.25 inch and 6.5 inch speakers with midbass or full-range capabilities, offering flexibility in replacement options.
- An 8 inch woofer location exists in the rear deck lid, which would typically handle lower frequency bass reproduction.
- The presence of both midbass and full-range compatible locations in the doors suggests that replacements could either maintain the component separation or simplify to full-range speakers.
- Replacing the larger door speakers at 5.25 inch or 6.5 inch would likely produce more noticeable sound improvements compared to smaller tweeters or midrange units.
- The dashboard contains both 1 inch tweeter and 3 inch full-range locations, indicating multiple mounting points that serve different audio purposes.
- Component speaker systems with separate tweeters and midbass drivers would align with the factory configuration based on the tweeter and midbass location pairings.
- The double DIN radio opening provides standard aftermarket head unit compatibility without requiring dash modifications.