2008 Audi S4 Speaker Sizes
The 2008 Audi S4 factory audio system features specific mounting locations across the interior. Dashboard and center dash accommodate 3 inch units, while front door panel and rear door panel support an 8 inch speaker size alongside 1 inch and 6.5 inch speakers. Rear side panel locations accept 5.25 inch and 8 inch units, and the rear deck lid accommodates an 8 inch unit. Compatible replacement and upgrade speaker types consist of tweeters, full-range units, midrange drivers, midbass drivers, and woofers.
Specific details regarding locations, speaker sizes, and types are outlined in the compatibility chart.
| Location | Size | Type | Notes |
|---|---|---|---|
| Center Dash | 3 | Midrange |
|
| Dashboard | 3 | Full-Range |
|
| Front Door Panel | 1 | Tweeter |
|
| Front Door Panel | 6.5 | Midbass / 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 |
|
| Rear Side Panel | 8 | Woofer |
|
2008 Audi S4 Speaker Replacement Summary
9
total positions
5
easy to replace
2
high priority
0
professional only
Replacement difficulty:
Low: 5 Medium: 4 High: 0Replacement priority:
High: 2 Medium: 5 Low: 22008 Audi S4 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 2008 Audi S4 features a multi-speaker configuration with tweeters positioned in both front and rear door panels at 1 inch, which typically handle high-frequency reproduction in the factory audio system.
- Full-range speakers in the dashboard at 3 inches may provide mid to high frequency coverage, while the center dash houses a dedicated 3-inch midrange driver that likely focuses on vocal and instrumental clarity.
- The door panels contain 6.5-inch openings compatible with midbass or full-range speakers, which could serve as primary upgrade candidates due to their larger size and potential for improved vocal range and bass response compared to smaller factory units.
- Rear side panels accommodate both 5.25-inch midbass/full-range speakers and 8-inch woofers, suggesting a dual-speaker arrangement that may handle different frequency ranges in the rear soundstage.
- The 2008 Audi S4 includes 8-inch woofer locations in both the rear deck lid and rear side panels, which generally contribute to lower frequency extension and bass output in the cabin.
- Component speaker systems with separate tweeters and midbass drivers could potentially work well given the existing tweeter locations in the door panels and the 6.5-inch midbass mounting points.
- Upgrading the 6.5-inch door speakers might yield noticeable improvements in sound quality since these positions often serve as the primary sound source for front-seat occupants in many audio systems.
- The double DIN radio opening allows for aftermarket head unit installations that may offer enhanced connectivity, amplification, or digital signal processing capabilities beyond the factory configuration.
- The variety of speaker sizes and types throughout the vehicle suggests a factory-designed sound system with frequency distribution across multiple drivers rather than relying on a few large full-range units.
- Tweeters in the 1-inch locations may benefit from aftermarket replacement if higher efficiency or extended frequency response is desired, though their small size limits low-frequency capability.