2018 Mazda 3 Speaker Sizes
The 2018 Mazda 3 factory audio system contains specific factory mounting locations where the center dash, dashboard, and rear deck lid accommodate 3.5 inch speakers. Additionally, the front door panel and rear door panel accept 6.75 inch units, while the front door panel also supports a 1 inch speaker size alongside a 5.25 inch configuration, and cargo area accepts 6.75 inch drivers while rear door panel accommodates 6x8 inch units. Compatible speaker types for a replacement or upgrade consist of tweeters, midbass units, and full-range components.
Specific details regarding locations, speaker sizes, and types are outlined in the compatibility chart.
| Location | Size | Type | Notes |
|---|---|---|---|
| Cargo Area | 6.75 | Midbass / Full-Range |
|
| Center Dash | 3.5 | Full-Range |
|
| Dashboard | 3.5 | Full-Range |
|
| Front Door Panel | 6.75 | Midbass / Full-Range |
|
| Front Door Panel | 1 | Tweeter |
|
| Front Door Panel | 5.25 | Midbass / Full-Range |
|
| Rear Deck Lid | 3.5 | Full-Range |
|
| Rear Door Panel | 6.75 | Midbass / Full-Range |
|
| Rear Door Panel | 6x8 | Full-Range |
|
2018 Mazda 3 Speaker Replacement Summary
9
total positions
7
easy to replace
4
high priority
0
professional only
Replacement difficulty:
Low: 7 Medium: 2 High: 0Replacement priority:
High: 4 Medium: 5 Low: 0Additional Notes
- The front door panels in the 2018 Mazda 3 accommodate multiple speaker sizes, including 1-inch tweeters, 5.25-inch components, and 6.75-inch drivers, suggesting a factory component system configuration that separates high and mid-range frequencies.
- Replacement priorities may differ based on listening preferences, as the 6.75-inch front door speakers handle midbass and full-range duties while the dedicated 1-inch tweeters manage higher frequencies.
- The rear door panels feature both 6.75-inch and 6x8-inch mounting options, indicating possible variations in factory configurations or aftermarket flexibility for oval-shaped drivers.
- Full-range speakers at 3.5 inches occupy the center dash, dashboard, and rear deck lid positions, potentially contributing to soundstage width and rear fill rather than primary audio output.
- Component speaker systems with separate tweeters and midbass drivers could maintain the factory's frequency separation approach in the front doors, while coaxial full-range units might simplify rear door installations.
- The cargo area 6.75-inch location offers midbass or full-range compatibility, which may serve as supplemental low-frequency reinforcement depending on the factory audio package.
- Sound quality improvements might be more noticeable when replacing the larger 5.25-inch or 6.75-inch front door speakers compared to the smaller 3.5-inch units, given their greater cone area and frequency range capabilities.
- Tweeter replacement at the 1-inch front door location could enhance high-frequency clarity without requiring modifications to midbass components, allowing for incremental system upgrades.