2018 Audi A4 Speaker Sizes
The 2018 Audi A4 factory audio system features specific mounting locations that accept various components, where the a-pillar, center dash, dashboard, and rear door panel accommodate 1 inch units. Furthermore, the center dash supports a 2.5 inch speaker size, the rear deck lid and front door panel accept 3.5 inch speakers, the front door panel and rear door panel accommodate 6.5 inch speakers, and the rear deck lid supports an 8 inch unit. Compatible speaker types for replacement and upgrade procedures include tweeters, midranges, full-ranges, midbass drivers, and woofers.
Specific details regarding locations, speaker sizes, and types are outlined in the compatibility chart.
| Location | Size | Type | Notes |
|---|---|---|---|
| A-Pillar | 1 | Tweeter |
|
| Center Dash | 1 | Tweeter |
|
| Center Dash | 2.5 | Midrange |
|
| Dashboard | 1 | Tweeter |
|
| 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 |
|
2018 Audi A4 Speaker Replacement Summary
10
total positions
6
easy to replace
2
high priority
1
professional only
Replacement difficulty:
Low: 6 Medium: 3 High: 1Replacement priority:
High: 2 Medium: 7 Low: 1Additional Notes
- The factory audio system in the 2018 Audi A4 incorporates a multi-driver configuration with separate components handling different frequency ranges across various mounting locations.
- Multiple 1-inch tweeter positions are distributed throughout the cabin, including the A-pillar, center dash, dashboard, and rear door panel locations, suggesting a design focused on high-frequency dispersion.
- Midrange frequencies are handled by both 2.5-inch drivers in the center dash and 3.5-inch units in the front door panels, indicating a dedicated mid-frequency reproduction strategy.
- The 6.5-inch speakers in both front and rear door panels accept either midbass or full-range replacements, offering flexibility in component selection based on whether a separate tweeter will be retained or integrated.
- Low-frequency output comes from 8-inch woofer positions in the rear deck lid, supplemented by 3.5-inch full-range drivers also located in the rear deck area.
- Replacing the door panel speakers would likely be prioritized given their 6.5-inch size and dual-function capability, as these positions typically contribute most significantly to overall sound quality in automotive applications.
- The presence of dedicated tweeter, midrange, and woofer positions suggests that upgrading to component speaker systems with separate crossovers might maintain the intended frequency separation more effectively than coaxial alternatives.
- The variety of speaker sizes and types indicates that sound improvement could be approached incrementally, starting with the larger door-mounted drivers before addressing the smaller auxiliary positions.