1990 Buick Reatta Speaker Sizes
The 1990 Buick Reatta factory audio system features a dashboard location that accommodates a 4 inch speaker size, alongside a rear location that supports 6.5 inch speakers. Compatible types for replacement and upgrade projects consist of midrange, midbass, and full-range units.
Specific details regarding locations, speaker sizes, and types are outlined in the compatibility chart.
| Location | Size | Type | Notes |
|---|---|---|---|
| Dashboard | 4 | Midrange |
|
| Rear | 6.5 | Midbass / Full-Range |
|
1990 Buick Reatta Speaker Replacement Summary
2
total positions
0
easy to replace
0
high priority
0
professional only
Replacement difficulty:
Low: 0 Medium: 2 High: 0Replacement priority:
High: 0 Medium: 2 Low: 01990 Buick Reatta 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 Buick Reatta features dashboard-mounted 4-inch midrange speakers that handle mid-frequency audio reproduction, while 6.5-inch rear speakers support either midbass or full-range configurations for broader frequency coverage.
- Dashboard midrange speakers typically focus on vocal and instrumental clarity in the 300Hz to 5kHz range, whereas the rear position may benefit from full-range replacements that deliver both mid and higher frequencies without requiring separate tweeters.
- The 6.5-inch rear location likely represents the primary low-frequency source in this two-position configuration, suggesting that midbass-capable aftermarket speakers could enhance bass response when paired with the existing dashboard midranges.
- Single DIN radio compatibility indicates a standard 2-inch tall head unit opening, which maintains compatibility with most aftermarket receivers and signal processors that could drive upgraded speakers.
- Replacing the rear speakers first might yield more noticeable sound improvement due to their larger cone area and ability to move more air compared to the smaller dashboard units.
- Component-style aftermarket speakers in the rear position could provide better frequency separation when combined with external crossovers, though full-range coaxial designs offer simpler installation with integrated tweeter elements.
- The dashboard midrange position may limit low-frequency output regardless of speaker quality due to mounting location and size constraints, making the rear speakers more critical for overall system balance.