1989 Ford Sierra Speaker Sizes
The 1989 Ford Sierra speaker size chart provides factory audio system specifications for replacement or aftermarket upgrade purposes. Information includes locations of speakers throughout the vehicle, with positions in the dashboard, front door panel, and rear side panel documented for reference when installing aftermarket components.
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| Location | Size | Type | Notes |
|---|---|---|---|
| Dashboard | 4 | Midrange |
|
| Front Door Panel | 5.25 | Midbass / Full-Range |
|
| Rear Side Panel | 5.25 | Midbass / Full-Range |
|
1989 Ford Sierra Speaker Replacement Summary
3
total positions
1
easy to replace
1
high priority
0
professional only
Replacement difficulty:
Low: 1 Medium: 2 High: 0Replacement priority:
High: 1 Medium: 1 Low: 1Additional Notes
- The dashboard position in the 1989 Ford Sierra uses a 4 inch size, which is notably smaller than the door and side panel locations. This size is only listed as compatible with midrange drivers, suggesting that position may have a relatively limited role in the overall frequency reproduction of the system.
- Midrange drivers, as noted for the dashboard, tend to handle the middle portion of the audible frequency spectrum. This type of driver is generally not suited for reproducing low-frequency content, so the dashboard location may contribute relatively little to bass output.
- The front door panel and rear side panel positions both share a 5.25 inch size, which could make speaker sourcing somewhat straightforward since a single size fits both locations. Both positions are listed as compatible with midbass or full-range driver types, which tends to indicate a broader frequency handling capability compared to the dashboard.
- Full-range drivers, where compatible, may be worth considering for the door and side panel positions, as this driver type is generally designed to reproduce a wider portion of the audible spectrum on its own. This could potentially reduce dependence on additional speaker locations for frequency coverage.
- From a replacement priority standpoint, the front door panel position might be considered before the rear side panel, given that front-stage sound placement is generally associated with a more focused and direct listening experience for occupants seated in the front.
- Replacing the dashboard speaker with a suitable midrange driver, rather than a full-range unit, may better align with the compatible types listed, which could affect how well the speaker performs within that specific frequency range.