1989 Toyota Supra Speaker Sizes
The 1989 Toyota Supra factory audio system includes specific mounting locations designed for particular audio components. Specifically, front door panel and rear deck lid locations accommodate 4 inch speakers. For any audio system replacement upgrade, midrange compatible speaker types function correctly within those specific locations.
Specific details regarding locations, speaker sizes, and types are outlined in the compatibility chart.
| Location | Size | Type | Notes |
|---|---|---|---|
| Front Door Panel | 4 | Midrange |
|
| Rear Deck Lid | 4 | Midrange |
|
1989 Toyota Supra 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: 01989 Toyota Supra 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 1989 Toyota Supra uses 4 inch speakers in both the front door panels and rear deck lid locations, which are classified as midrange drivers rather than full-range coaxial units.
- Midrange speakers in this configuration typically handle frequencies between approximately 300 Hz and 5 kHz, suggesting the factory audio system may have relied on separate tweeters or had limited high-frequency extension.
- Upgrading the rear deck lid speakers could provide noticeable changes to cabin acoustics since rear-mounted drivers contribute to soundstage depth and ambient fill in coupe configurations.
- The 4 inch size constraint limits available power handling and bass response compared to larger drivers, though aftermarket midrange replacements might offer improved sensitivity and frequency linearity.
- Both Single DIN and Double DIN radio compatibility allows flexibility in head unit selection, which could become relevant when pairing upgraded speakers with amplifiers or signal processors requiring preamp outputs.
- Replacing factory midrange speakers with components featuring treated cones or textile domes might reduce distortion at moderate listening levels without requiring additional amplification.