2018 Audi A3 Speaker Sizes
The 2018 Audi A3 speaker size chart provides factory audio system specifications for aftermarket replacement or upgrade purposes. Information includes speaker locations throughout the cabin: a-pillar, center dash, front door panel, rear door panel, rear side panel, and rear deck lid. Details cover factory speaker specifications to assist with selecting compatible aftermarket audio components for the vehicle.
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| Location | Size | Type | Notes |
|---|---|---|---|
| A-Pillar | 1 | Tweeter |
|
| Center Dash | 3.5 | Full-Range |
|
| Front Door Panel | 3.5 | Midrange |
|
| Front Door Panel | 6.5 | 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 | 3.5 | Midrange |
|
| Rear Side Panel | 1 | Tweeter |
|
| Rear Side Panel | 6.5 | Midbass / Full-Range |
|
2018 Audi A3 Speaker Replacement Summary
11
total positions
6
easy to replace
2
high priority
1
professional only
Replacement difficulty:
Low: 6 Medium: 4 High: 1Replacement priority:
High: 2 Medium: 5 Low: 42018 Audi A3 Radio Slot Size (DIN)
| DIN Type | Size (inch) | Size (mm) | Notes |
|---|---|---|---|
| Single DIN | 7"×2" | 180×50 | Standard size for basic car radios with small display or no display |
- Always measure the slot before purchasing a new radio
- Check slot depth - it may vary
Additional Notes
- The 2018 Audi A3 contains multiple speaker locations with varying sizes, suggesting a multi-way sound system configuration that separates frequency ranges across different driver types.
- The 6.5 inch locations in the front door panel, rear door panel, and rear side panel likely serve as the primary speakers for mid-bass frequencies and could be considered priority targets for replacement when seeking sound quality improvements.
- The 1 inch tweeter locations in the A-pillar, rear door panel, and rear side panel handle high-frequency reproduction, and their small size indicates specialization for treble response rather than broad-spectrum audio.
- Three separate 3.5 inch speaker positions exist with different functional roles: the center dash and rear deck lid use full-range drivers, while the front door panel and rear side panel utilize midrange-specific drivers.
- The 8 inch woofer position in the rear deck lid focuses on low-frequency output, complementing the smaller drivers throughout the cabin.
- Replacement speakers would need to match both the physical size constraints and the intended frequency role of each location, as mixing driver types may not align with the factory crossover network design.
- The single DIN radio opening limits head unit replacement options compared to double DIN configurations, though this may affect integration more than speaker upgrades.
- The presence of dedicated midrange drivers in the front door panel and rear side panel suggests the factory system attempts to maintain clarity in vocal and instrumental frequencies separate from bass reproduction.
- Component speaker systems designed for 6.5 inch openings could potentially replace both the midbass drivers and the separate tweeters if the crossover networks are designed to integrate with the existing locations.