2004 Audi S4 Speaker Sizes
The 2004 Audi S4 speaker size chart provides factory specifications for all audio system locations. Information includes replacement and aftermarket upgrade options for speakers in the front door panel, rear door panel, dashboard, center dash, rear side panel, and rear deck lid. Details cover factory speaker specifications and compatible aftermarket sizes for each location within the audio system.
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| 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 |
|
2004 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: 22004 Audi S4 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 2004 Audi S4 utilizes a multi-speaker configuration with dedicated tweeters in both front and rear door panels at 1 inch, suggesting a factory setup that may have prioritized high-frequency detail through separate components rather than relying solely on coaxial designs.
- Dashboard and center dash locations accommodate 3-inch speakers, with the dashboard accepting full-range drivers while the center dash position is specified for midrange units, indicating differentiated frequency responsibilities across the front soundstage.
- Both front and rear door panels feature 6.5-inch mounting positions compatible with either midbass or full-range speakers, offering flexibility in replacement strategy depending on whether the existing tweeter locations are retained or bypassed.
- Rear side panels present two distinct mounting options at 5.25 inches and 8 inches, with the larger position designated for woofer applications, which could contribute additional low-frequency output beyond what the door-mounted 6.5-inch units provide.
- The rear deck lid accommodates an 8-inch woofer, potentially serving as a supplementary bass source that works in conjunction with the rear side panel woofers to reinforce lower frequencies throughout the cabin.
- Radio replacement options for the 2004 Audi S4 include both single DIN and double DIN configurations, though implementation may require additional installation components or modifications to accommodate the double DIN format in the factory opening.
- Tweeter replacement in the door panels might be prioritized for improving upper-range clarity, particularly if the factory 1-inch units have degraded, as these components typically handle delicate high-frequency information that affects overall tonal balance.
- The presence of dedicated midrange and midbass positions throughout the vehicle suggests that component speaker systems with separated frequency duties could be more effective than coaxial alternatives when pursuing sound quality improvements.