1990 Ford Aerostar Speaker Sizes
The 1990 Ford Aerostar factory audio system contains specific locations for audio components. The dashboard accommodates 4 inch speakers, the tail gate accepts a 3.5 inch speaker size, and the front door panel and rear side panel support 6x9 inch units. Full-range and midrange drivers serve as compatible speaker types during replacement or upgrade procedures.
Specific details regarding locations, speaker sizes, and types are outlined in the compatibility chart.
| Location | Size | Type | Notes |
|---|---|---|---|
| Dashboard | 4 | Midrange |
|
| Front Door Panel | 6x9 | Full-Range |
|
| Rear Side Panel | 6x9 | Full-Range |
|
| Tail Gate | 3.5 | Full-Range |
|
1990 Ford Aerostar Speaker Replacement Summary
4
total positions
2
easy to replace
1
high priority
0
professional only
Replacement difficulty:
Low: 2 Medium: 2 High: 0Replacement priority:
High: 1 Medium: 2 Low: 11990 Ford Aerostar 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 1990 Ford Aerostar features four distinct speaker locations with three different size specifications, suggesting a factory audio configuration that distributed sound across multiple cabin zones rather than concentrating output in traditional front and rear positions.
- Front door panels accommodate 6x9 inch full-range speakers, which typically provide broader frequency response compared to smaller drivers due to their larger surface area and ability to reproduce both midrange and bass frequencies without requiring separate components.
- Dashboard positions utilize 4 inch midrange speakers rather than full-range units, indicating these locations likely handled vocal and instrument frequencies while relying on other speakers for bass reproduction in the factory setup.
- Both rear side panels and the tailgate contain speaker provisions, with the side panels accepting 6x9 inch full-range units while the tailgate uses smaller 3.5 inch full-range speakers that may have served as fill speakers for rear cargo area coverage.
- Replacing the front door 6x9 speakers would likely yield the most noticeable improvement in overall sound quality, as these locations typically provide the primary audio output that reaches front seat occupants most directly.
- The dashboard midrange speakers could benefit from upgrades that offer better clarity in the vocal frequency range, though their 4 inch size limits low-frequency extension regardless of component quality.
- Aftermarket component speakers in the 6x9 format could replace the front door units to separate tweeter and woofer duties, potentially improving stereo imaging and high-frequency detail compared to full-range replacements.
- The single DIN radio opening allows for head unit replacement with period-appropriate or modern options, though modern units may require installation adapters to fit properly in the factory mounting location.