1990 Toyota 4Runner Speaker Sizes
The 1990 Toyota 4Runner factory audio system features multiple locations for acoustic components. Dashboard, front door panel, and rear door panel accommodate 4 inch speakers. Front door panel and rear speaker accept 6.5 inch units, while rear side panel supports a 5.25 inch speaker size. Compatible speaker types for replacement and upgrade include midrange, midbass, and full-range.
Specific details regarding locations, speaker sizes, and types are outlined in the compatibility chart.
| Location | Size | Type | Notes |
|---|---|---|---|
| Dashboard | 4 | Midrange |
|
| Front Door Panel | 6.5 | Midbass / Full-Range |
|
| Front Door Panel | 4 | Midrange |
|
| Rear | 6.5 | Midbass / Full-Range |
|
| Rear Door Panel | 4 | Midrange |
|
| Rear Side Panel | 5.25 | Midbass / Full-Range |
|
1990 Toyota 4Runner Speaker Replacement Summary
6
total positions
3
easy to replace
2
high priority
0
professional only
Replacement difficulty:
Low: 3 Medium: 3 High: 0Replacement priority:
High: 2 Medium: 3 Low: 11990 Toyota 4Runner Radio Slot Size (DIN)
| DIN Type | Size (inch) | Size (mm) | Notes |
|---|---|---|---|
| Single DIN or Double DIN | 7"×2" or 7"×4" | 180×50 or 180×100 | Vehicle supports both radio sizes |
- Always measure the slot before purchasing a new radio
- Check slot depth - it may vary
Additional Notes
- The 1990 Toyota 4Runner contains multiple speaker locations with varying sizes, suggesting a multi-stage replacement approach may be beneficial when upgrading the factory audio system.
- Dashboard, front door panel, and rear door panel positions all accommodate 4-inch midrange speakers, which typically handle vocal frequencies and mid-range instrumentals rather than deep bass reproduction.
- Larger 6.5-inch locations in the front door panel and rear positions support both midbass and full-range speaker types, offering more flexibility in component selection based on desired audio characteristics.
- The 5.25-inch rear side panel location falls between the smaller midrange positions and larger door speakers, creating an intermediate size option for sound system configuration.
- Midbass speakers in the 6.5-inch positions would likely provide better low-frequency response than the smaller 4-inch midrange units, potentially improving overall tonal balance.
- Full-range speakers installed in the 5.25-inch or 6.5-inch locations could eliminate the need for separate tweeters in those positions, though dedicated component systems might offer superior sound staging.
- The presence of both Single DIN and Double DIN radio compatibility indicates potential for head unit upgrades without dashboard modification, which could serve as a foundation for improved audio output before speaker replacement.
- Prioritizing the larger 6.5-inch speaker locations during initial upgrades might yield more noticeable sound quality improvements compared to replacing the smaller 4-inch midrange units first.
- Aftermarket speakers matching these factory sizes would typically install without requiring custom mounting brackets or extensive modification to door panels or trim pieces.