2018 Ford Focus Speaker Sizes
The 2018 Ford Focus factory audio system features specific mounting locations that accommodate designated drivers, where the center dash supports a 3.5 inch speaker size, while the front door panel and rear door panel accept 1 inch units alongside 6.5 inch units, and the rear side panel accommodates an 8 inch unit. Available component options for acoustic replacement and upgrade encompass tweeters, full-range drivers, midbass units, and woofers.
Specific details regarding locations, speaker sizes, and types are outlined in the compatibility chart.
| Location | Size | Type | Notes |
|---|---|---|---|
| Center Dash | 3.5 | Full-Range |
|
| Front Door Panel | 1 | Tweeter |
|
| Front Door Panel | 6.5 | Midbass / Full-Range |
|
| Rear Door Panel | 1 | Tweeter |
|
| Rear Door Panel | 6.5 | Midbass / Full-Range |
|
| Rear Side Panel | 8 | Woofer |
|
2018 Ford Focus Speaker Replacement Summary
6
total positions
4
easy to replace
2
high priority
0
professional only
Replacement difficulty:
Low: 4 Medium: 2 High: 0Replacement priority:
High: 2 Medium: 3 Low: 12018 Ford Focus 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 2018 Ford Focus contains a layered speaker configuration with dedicated tweeters, mid-range drivers, and a rear woofer component positioned across multiple locations throughout the cabin.
- Both front and rear door panels incorporate 1-inch tweeters for high-frequency reproduction, suggesting a factory attempt at extended treble response beyond what the larger drivers can naturally produce.
- The 6.5-inch openings in all four door panels accept either midbass or full-range speakers, allowing replacement options based on whether the existing tweeter network will be retained or bypassed.
- A center dash location houses a 3.5-inch full-range speaker, likely positioned for vocal clarity and stereo imaging enhancement in the driver's forward sound field.
- An 8-inch woofer location exists in the rear side panel area, presumably intended for low-frequency reinforcement that the door-mounted 6.5-inch drivers may lack.
- Upgrading the 6.5-inch door speakers would probably yield the most noticeable improvement in overall sound quality, as these locations typically handle the majority of the frequency spectrum in most factory audio systems.
- The dual radio compatibility (Single DIN and Double DIN) indicates the dash opening can accommodate either a standard height or taller aftermarket head unit with additional display or control features.
- Replacing the 1-inch tweeters could refine high-frequency detail and reduce harshness that sometimes characterizes factory silk or paper dome designs.
- The 8-inch rear woofer presents an opportunity for bass enhancement without requiring subwoofer enclosure installation, though its effectiveness depends heavily on the mounting location's acoustic properties.
- Full-range replacement speakers in the 6.5-inch positions might eliminate the need for the separate tweeters if the aftermarket units feature integrated high-frequency drivers with adequate dispersion characteristics.