1989 Oldsmobile Cutlass Supreme Speaker Sizes
The 1989 Oldsmobile Cutlass Supreme factory audio system features dashboard locations that accommodate 4 inch speakers, and the rear deck lid supports 6x9 inch units. Such installations allow for a successful speaker replacement and audio upgrade utilizing midrange and full-range compatible types.
Specific details regarding locations, speaker sizes, and types are outlined in the compatibility chart.
| Location | Size | Type | Notes |
|---|---|---|---|
| Dashboard | 4 | Midrange |
|
| Rear Deck Lid | 6x9 | Full-Range |
|
1989 Oldsmobile Cutlass Supreme Speaker Replacement Summary
2
total positions
1
easy to replace
0
high priority
0
professional only
Replacement difficulty:
Low: 1 Medium: 1 High: 0Replacement priority:
High: 0 Medium: 2 Low: 01989 Oldsmobile Cutlass Supreme 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 1989 Oldsmobile Cutlass Supreme features a two-location speaker configuration with dashboard-mounted 4-inch midrange drivers and 6x9-inch full-range speakers in the rear deck lid, suggesting a front-to-rear sound distribution approach typical of this era's factory audio systems.
- Dashboard speakers in this vehicle function as midrange drivers rather than full-range units, indicating they handle middle frequency reproduction while relying on the rear deck speakers for lower frequency response and overall sound coverage.
- The 6x9-inch rear deck lid speakers serve as the primary full-range drivers, likely carrying the bulk of audio reproduction responsibilities across the frequency spectrum from bass through treble.
- Replacement priority might favor the rear deck speakers given their full-range designation, as these units would have the most significant impact on overall sound quality and frequency response when upgrading from factory components.
- The midrange-specific role of the dashboard speakers allows for aftermarket upgrades to focus on vocal clarity and instrumental detail in the front soundstage without requiring bass reproduction capability from these smaller units.
- The single DIN radio opening provides standard aftermarket head unit compatibility, offering potential for improved amplification and signal processing to better drive upgraded speaker components in both locations.
- Sound improvement through speaker replacement would likely be most noticeable in bass response and overall output capability when addressing the rear deck position, while dashboard speaker upgrades would refine midrange frequency clarity.
- The separation between midrange-specific and full-range speaker roles suggests the factory system was designed with basic frequency distribution in mind, which could be further optimized with component speakers featuring dedicated crossover networks.