1986 Pontiac Grand Prix Speaker Sizes
The 1986 Pontiac Grand Prix speaker size chart provides factory specifications for audio system components. Information includes speaker locations within the vehicle, such as dashboard and rear deck lid positions. Details cover replacement and upgrade options for factory speakers with aftermarket alternatives. The chart presents specifications relevant to audio system modifications and component installations.
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| Location | Size | Type | Notes |
|---|---|---|---|
| Dashboard | 3.5 | Full-Range |
|
| Rear Deck Lid | 4x10 | Full-Range |
|
1986 Pontiac Grand Prix Speaker Replacement Summary
2
total positions
1
easy to replace
0
high priority
0
professional only
Replacement difficulty:
Low: 1 Medium: 1 High: 0Replacement priority:
High: 0 Medium: 2 Low: 01986 Pontiac Grand Prix Radio Slot Size (DIN)
| DIN Type | Size (inch) | Size (mm) | Notes |
|---|---|---|---|
| Single DIN | 7"×2" | 180×50 | Standard size for basic car radios with small display or no display |
- Always measure the slot before purchasing a new radio
- Check slot depth - it may vary
Additional Notes
- The 1986 Pontiac Grand Prix features a relatively simple speaker configuration with two distinct mounting locations requiring different speaker sizes and shapes, where the dashboard positions accommodate compact circular speakers while the rear deck area utilizes oval speakers that may provide broader sound dispersion patterns.
- Full-range speakers serve as the compatible type for all positions in the 1986 Pontiac Grand Prix, suggesting that individual speakers handle the complete frequency spectrum rather than requiring separate components for different frequency ranges, which could simplify the replacement process.
- The dashboard speakers at 3.5 inches represent smaller diameter installations that might prioritize mid-range and higher frequencies due to their physical size limitations, while positioning near the windshield could create reflection patterns that affect sound staging.
- Rear deck lid speakers measuring 4x10 inches offer a larger radiating surface area compared to the dashboard units, potentially contributing more bass response and overall volume output from their position in the rear shelf.
- Replacing the rear deck speakers might take priority for those seeking noticeable sound quality improvements, as the larger speaker surface area could handle more power and reproduce lower frequencies with greater authority than the smaller dashboard units.
- The single DIN radio specification indicates a standard opening height that would accommodate aftermarket head units without requiring modifications to the dashboard opening, though connections and mounting brackets might need attention during installation.
- Speaker replacement in both locations would likely benefit from attention to mounting depth, as the dashboard area might have limited clearance behind the speaker opening while the rear deck could face interference from trunk contents or the rear window slope.