1987 Plymouth Horizon Speaker Sizes
Factory speaker size chart for the 1987 Plymouth Horizon lists specifications and locations for OEM audio system components. Information includes replacement speaker sizes for front door panel and rear door panel positions. Data covers factory speaker specifications to assist with aftermarket speaker upgrade installations.
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| Location | Size | Type | Notes |
|---|---|---|---|
| Front Door Panel | 5.25 | Midbass / Full-Range |
|
| Rear Door Panel | 6x9 | Full-Range |
|
1987 Plymouth Horizon Speaker Replacement Summary
2
total positions
2
easy to replace
1
high priority
0
professional only
Replacement difficulty:
Low: 2 Medium: 0 High: 0Replacement priority:
High: 1 Medium: 1 Low: 01987 Plymouth Horizon 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 1987 Plymouth Horizon features front door panel speakers with a 5.25 inch size specification, suggesting these positions could accommodate either midbass drivers or full-range units depending on the system configuration desired.
- Rear door panel locations accept 6x9 inch full-range speakers, which typically offer broader frequency response compared to smaller formats due to their larger cone area and elongated shape.
- Replacing factory speakers in the front positions might be prioritized first since these locations handle the primary soundstage in most vehicle audio systems, though the existing full-range compatibility allows for straightforward aftermarket installation.
- The rear 6x9 inch specification indicates an oval format that can provide enhanced bass output relative to round speakers of similar surface area, potentially complementing the smaller front units.
- Full-range compatibility across both front and rear positions in the 1987 Plymouth Horizon suggests the factory system was designed as a basic four-speaker setup without dedicated tweeters or subwoofers.
- The single DIN radio opening follows standard head unit sizing from this era, which may simplify replacement with contemporary or period-correct aftermarket receivers that can better drive upgraded speakers.
- Sound improvement possibilities exist through speaker replacement alone, though the midbass option for front positions could enable a more advanced configuration if paired with separate high-frequency drivers.
- The 5.25 inch front specification represents a common size that offers reasonable low-frequency extension while fitting in compact door panel spaces typical of this vehicle class.