1987 Ford Sierra Speaker Sizes
The 1987 Ford Sierra speaker size chart details factory audio system specifications and locations for replacement or aftermarket upgrade purposes. Information covers speaker positions in the dashboard, rear side panel, and front door panel areas. Data includes specifications for each mounting location to assist with identifying compatible aftermarket speakers when upgrading from factory audio components.
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| Location | Size | Type | Notes |
|---|---|---|---|
| Dashboard | 4 | Midrange |
|
| Front Door Panel | 5.25 | Midbass / Full-Range |
|
| Rear Side Panel | 4x6 | Full-Range |
|
1987 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 front door panel locations in the 1987 Ford Sierra take 5.25 inch speakers, which may suggest these positions carry a relatively higher replacement priority, as midbass and full-range drivers at that size tend to handle a broader portion of the audible frequency spectrum compared to smaller placements.
- The dashboard placement is sized at 4 inches and is listed as compatible with midrange drivers only, which could indicate a more limited sonic role, likely covering mid frequencies without substantial low-end reinforcement.
- The rear side panel accommodates a 4x6 inch oval format, which is a non-circular form factor that tends to offer a somewhat wider sound dispersion pattern within the available mounting depth, paired with full-range compatibility.
- Full-range compatibility at both the rear side panel and front door panel positions may suggest those locations could produce a wider frequency response on their own, potentially reducing reliance on additional components for basic audio coverage.
- The dashboard midrange placement, given its smaller size and limited driver type compatibility, might be considered a lower priority for replacement compared to the door and rear panel positions, where driver options appear more varied.